Merge branch 'master' into titanic

64 files changed, 5867 insertions, 582 deletions

diff --git a/backends/audiocd/audiocd-stream.cpp b/backends/audiocd/audiocd-stream.cpp
new file mode 100644
index 0000000000..3c0d0957da
--- /dev/null
+++ b/backends/audiocd/audiocd-stream.cpp
@@ -0,0 +1,199 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * Original license header:
+ *
+ * Cabal - Legacy Game Implementations
+ *
+ * Cabal is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "backends/audiocd/audiocd-stream.h"
+#include "common/textconsole.h"
+
+AudioCDStream::AudioCDStream() : _buffer(), _frame(0), _bufferPos(0), _bufferFrame(0), _forceStop(false) {
+}
+
+AudioCDStream::~AudioCDStream() {
+	// Stop the timer; the subclass needs to do this,
+	// so this is just a last resort.
+	stopTimer();
+
+	// Clear any buffered frames
+	emptyQueue();
+}
+
+int AudioCDStream::readBuffer(int16 *buffer, const int numSamples) {
+	int samples = 0;
+
+	// See if any data is left first
+	while (_bufferPos < kSamplesPerFrame && samples < numSamples)
+		buffer[samples++] = _buffer[_bufferPos++];
+
+	// Bail out if done
+	if (endOfData())
+		return samples;
+
+	while (samples < numSamples && !endOfData()) {
+		if (!readNextFrame())
+			return samples;
+
+		// Copy the samples over
+		for (_bufferPos = 0; _bufferPos < kSamplesPerFrame && samples < numSamples;)
+			buffer[samples++] = _buffer[_bufferPos++];
+	}
+
+	return samples;
+}
+
+bool AudioCDStream::readNextFrame() {
+	// Fetch a frame from the queue
+	int16 *buffer;
+
+	{
+		Common::StackLock lock(_mutex);
+
+		// Nothing we can do if it's empty
+		if (_bufferQueue.empty())
+			return false;
+
+		buffer = _bufferQueue.pop();
+	}
+
+	memcpy(_buffer, buffer, kSamplesPerFrame * 2);
+	delete[] buffer;
+	_frame++;
+	return true;
+}
+
+bool AudioCDStream::endOfData() const {
+	return !shouldForceStop() && getStartFrame() + _frame >= getEndFrame() && _bufferPos == kSamplesPerFrame;
+}
+
+bool AudioCDStream::seek(const Audio::Timestamp &where) {
+	// Stop the timer
+	stopTimer();
+
+	// Clear anything out of the queue
+	emptyQueue();
+
+	// Convert to the frame number
+	// Really not much else needed
+	_bufferPos = kSamplesPerFrame;
+	_frame = where.convertToFramerate(kFramesPerSecond).totalNumberOfFrames();
+	_bufferFrame = _frame;
+
+	// Start the timer again
+	startTimer();
+	return true;
+}
+
+Audio::Timestamp AudioCDStream::getLength() const {
+	return Audio::Timestamp(0, getEndFrame() - getStartFrame(), kFramesPerSecond);
+}
+
+void AudioCDStream::timerProc(void *refCon) {
+	static_cast<AudioCDStream *>(refCon)->onTimer();
+}
+
+void AudioCDStream::onTimer() {
+	// The goal here is to do as much work in this timer instead
+	// of doing it in the readBuffer() call, which is the mixer.
+
+	// If we're done, bail.
+	if (shouldForceStop() || getStartFrame() + _bufferFrame >= getEndFrame())
+		return;
+
+	// Get a quick count of the number of items in the queue
+	// We don't care that much; we only need a quick estimate
+	_mutex.lock();
+	uint32 queueCount = _bufferQueue.size();
+	_mutex.unlock();
+
+	// If we have enough audio buffered, bail out
+	if (queueCount >= kBufferThreshold)
+		return;
+
+	while (!shouldForceStop() && queueCount < kBufferThreshold && getStartFrame() + _bufferFrame < getEndFrame()) {
+		int16 *buffer = new int16[kSamplesPerFrame];
+
+		// Figure out the MSF of the frame we're looking for
+		int frame = _bufferFrame + getStartFrame();
+
+		// Request to read that frame
+		if (!readFrame(frame, buffer)) {
+			warning("Failed to read CD audio");
+			forceStop();
+			return;
+		}
+
+		_bufferFrame++;
+
+		// Now push the buffer onto the queue
+		Common::StackLock lock(_mutex);
+		_bufferQueue.push(buffer);
+		queueCount = _bufferQueue.size();
+	}
+}
+
+void AudioCDStream::startTimer(bool fillBuffer) {
+	_forceStop = false;
+	if (fillBuffer) {
+		onTimer();
+	}
+	g_system->getTimerManager()->installTimerProc(timerProc, 10 * 1000, this, "AudioCDStream");
+}
+
+void AudioCDStream::stopTimer() {
+	forceStop();
+	g_system->getTimerManager()->removeTimerProc(timerProc);
+}
+
+void AudioCDStream::emptyQueue() {
+	while (!_bufferQueue.empty())
+		delete[] _bufferQueue.pop();
+}
+
+bool AudioCDStream::shouldForceStop() const {
+	Common::StackLock lock(_forceStopMutex);
+	return _forceStop;
+}
+
+void AudioCDStream::forceStop() {
+	Common::StackLock lock(_forceStopMutex);
+	_forceStop = true;
+}
diff --git a/backends/audiocd/audiocd-stream.h b/backends/audiocd/audiocd-stream.h
new file mode 100644
index 0000000000..dbc6a6321b
--- /dev/null
+++ b/backends/audiocd/audiocd-stream.h
@@ -0,0 +1,108 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * Original license header:
+ *
+ * Cabal - Legacy Game Implementations
+ *
+ * Cabal is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef BACKENDS_AUDIOCD_AUDIOCD_STREAM_H
+#define BACKENDS_AUDIOCD_AUDIOCD_STREAM_H
+
+#include "audio/audiostream.h"
+#include "common/mutex.h"
+#include "common/queue.h"
+#include "common/timer.h"
+
+class AudioCDStream : public Audio::SeekableAudioStream {
+public:
+	AudioCDStream();
+	~AudioCDStream();
+
+	int readBuffer(int16 *buffer, const int numSamples);
+	bool isStereo() const { return true; }
+	int getRate() const { return 44100; }
+	bool endOfData() const;
+	bool seek(const Audio::Timestamp &where);
+	Audio::Timestamp getLength() const;
+
+protected:
+	virtual uint getStartFrame() const = 0;
+	virtual uint getEndFrame() const = 0;
+	virtual bool readFrame(int frame, int16 *buffer) = 0;
+
+	void startTimer(bool fillBuffer = false);
+	void stopTimer();
+
+	enum {
+		kBytesPerFrame = 2352,
+		kSamplesPerFrame = kBytesPerFrame / 2
+	};
+
+	enum {
+		kSecondsPerMinute = 60,
+		kFramesPerSecond = 75
+	};
+
+	enum {
+		// Keep about a second's worth of audio in the buffer
+		kBufferThreshold = kFramesPerSecond
+	};
+
+private:
+	int16 _buffer[kSamplesPerFrame];
+	int _frame;
+	uint _bufferPos;
+
+	Common::Queue<int16 *> _bufferQueue;
+	int _bufferFrame;
+	Common::Mutex _mutex;
+
+	bool _forceStop;
+	bool shouldForceStop() const;
+	void forceStop();
+	Common::Mutex _forceStopMutex;
+
+	bool readNextFrame();
+	static void timerProc(void *refCon);
+	void onTimer();
+	void emptyQueue();
+};
+
+#endif
diff --git a/backends/audiocd/audiocd.h b/backends/audiocd/audiocd.h
index 6eae8e096b..b3674f2570 100644
--- a/backends/audiocd/audiocd.h
+++ b/backends/audiocd/audiocd.h
@@ -48,26 +48,31 @@ public:
 	};
 
 	/**
-	 * @name Emulated playback functions
-	 * Engines should call these functions. Not all platforms
-	 * support cd playback, and these functions should try to
-	 * emulate it.
+	 * Initialize the specified CD drive for audio playback.
+	 * @return true if the CD drive was inited successfully
+	 */
+	virtual bool open() = 0;
+
+	/**
+	 * Close the currently open CD drive
 	 */
-	//@{
+	virtual void close() = 0;
 
 	/**
 	 * Start audio CD playback
-	 * @param track			the track to play.
-	 * @param numLoops		how often playback should be repeated (-1 = infinitely often).
-	 * @param startFrame	the frame at which playback should start (75 frames = 1 second).
-	 * @param duration		the number of frames to play.
-	 * @param only_emulate	determines if the track should be emulated only
+	 * @param track          the track to play.
+	 * @param numLoops       how often playback should be repeated (<=0 means infinitely often).
+	 * @param startFrame     the frame at which playback should start (75 frames = 1 second).
+	 * @param duration       the number of frames to play.
+	 * @param onlyEmulate    determines if the track should be emulated only
+	 * @note The @c onlyEmulate parameter is deprecated.
+	 * @return @c true if the track started playing, @c false otherwise
 	 */
-	virtual void play(int track, int numLoops, int startFrame, int duration, bool only_emulate = false) = 0;
+	virtual bool play(int track, int numLoops, int startFrame, int duration, bool onlyEmulate = false) = 0;
 
 	/**
 	 * Get if audio is being played.
-	 * @return true if CD or emulated audio is playing
+	 * @return true if CD audio is playing
 	 */
 	virtual bool isPlaying() const = 0;
 
@@ -82,12 +87,12 @@ public:
 	virtual void setBalance(int8 balance) = 0;
 
 	/**
-	 * Stop CD or emulated audio playback.
+	 * Stop audio playback.
 	 */
 	virtual void stop() = 0;
 
 	/**
-	 * Update CD or emulated audio status.
+	 * Update audio status.
 	 */
 	virtual void update() = 0;
 
@@ -96,50 +101,6 @@ public:
 	 * @return a Status struct with playback data.
 	 */
 	virtual Status getStatus() const = 0;
-
-	//@}
-
-
-	/**
-	 * @name Real CD audio methods
-	 * These functions should be called from the emulated
-	 * ones if they can't emulate the audio playback.
-	 */
-	//@{
-
-	/**
-	 * Initialize the specified CD drive for audio playback.
-	 * @param drive the drive id
-	 * @return true if the CD drive was inited successfully
-	 */
-	virtual bool openCD(int drive) = 0;
-
-	/**
-	 * Poll CD status.
-	 * @return true if CD audio is playing
-	 */
-	virtual bool pollCD() const = 0;
-
-	/**
-	 * Start CD audio playback.
-	 * @param track			the track to play.
-	 * @param num_loops		how often playback should be repeated (-1 = infinitely often).
-	 * @param start_frame	the frame at which playback should start (75 frames = 1 second).
-	 * @param duration		the number of frames to play.
-	 */
-	virtual void playCD(int track, int num_loops, int start_frame, int duration) = 0;
-
-	/**
-	 * Stop CD audio playback.
-	 */
-	virtual void stopCD() = 0;
-
-	/**
-	 * Update CD audio status.
-	 */
-	virtual void updateCD() = 0;
-
-	//@}
 };
 
 #endif
diff --git a/backends/audiocd/default/default-audiocd.cpp b/backends/audiocd/default/default-audiocd.cpp
index abf80ac4cd..c2ce7cedcc 100644
--- a/backends/audiocd/default/default-audiocd.cpp
+++ b/backends/audiocd/default/default-audiocd.cpp
@@ -22,6 +22,7 @@
 
 #include "backends/audiocd/default/default-audiocd.h"
 #include "audio/audiostream.h"
+#include "common/config-manager.h"
 #include "common/system.h"
 
 DefaultAudioCDManager::DefaultAudioCDManager() {
@@ -37,7 +38,25 @@ DefaultAudioCDManager::DefaultAudioCDManager() {
 	assert(_mixer);
 }
 
-void DefaultAudioCDManager::play(int track, int numLoops, int startFrame, int duration, bool only_emulate) {
+DefaultAudioCDManager::~DefaultAudioCDManager() {
+	// Subclasses should call close as well
+	close();
+}
+
+bool DefaultAudioCDManager::open() {
+	// For emulation, opening is always valid
+	close();
+	return true;
+}
+
+void DefaultAudioCDManager::close() {
+	// Only need to stop for emulation
+	stop();
+}
+
+bool DefaultAudioCDManager::play(int track, int numLoops, int startFrame, int duration, bool onlyEmulate) {
+	stop();
+
 	if (numLoops != 0 || startFrame != 0) {
 		_cd.track = track;
 		_cd.numLoops = numLoops;
@@ -55,9 +74,6 @@ void DefaultAudioCDManager::play(int track, int numLoops, int startFrame, int du
 		for (int i = 0; !stream && i < 2; ++i)
 			stream = Audio::SeekableAudioStream::openStreamFile(trackName[i]);
 
-		// Stop any currently playing emulated track
-		_mixer->stopHandle(_handle);
-
 		if (stream != 0) {
 			Audio::Timestamp start = Audio::Timestamp(0, startFrame, 75);
 			Audio::Timestamp end = duration ? Audio::Timestamp(0, startFrame + duration, 75) : stream->getLength();
@@ -70,12 +86,11 @@ void DefaultAudioCDManager::play(int track, int numLoops, int startFrame, int du
 			_emulating = true;
 			_mixer->playStream(Audio::Mixer::kMusicSoundType, &_handle,
 			                        Audio::makeLoopingAudioStream(stream, start, end, (numLoops < 1) ? numLoops + 1 : numLoops), -1, _cd.volume, _cd.balance);
-		} else {
-			_emulating = false;
-			if (!only_emulate)
-				playCD(track, numLoops, startFrame, duration);
+			return true;
 		}
 	}
+
+	return false;
 }
 
 void DefaultAudioCDManager::stop() {
@@ -83,52 +98,32 @@ void DefaultAudioCDManager::stop() {
 		// Audio CD emulation
 		_mixer->stopHandle(_handle);
 		_emulating = false;
-	} else {
-		// Real Audio CD
-		stopCD();
 	}
 }
 
 bool DefaultAudioCDManager::isPlaying() const {
-	if (_emulating) {
-		// Audio CD emulation
+	// Audio CD emulation
+	if (_emulating)
 		return _mixer->isSoundHandleActive(_handle);
-	} else {
-		// Real Audio CD
-		return pollCD();
-	}
+
+	// The default class only handles emulation
+	return false;
 }
 
 void DefaultAudioCDManager::setVolume(byte volume) {
 	_cd.volume = volume;
-	if (_emulating) {
-		// Audio CD emulation
-		if (_mixer->isSoundHandleActive(_handle))
-			_mixer->setChannelVolume(_handle, _cd.volume);
-	} else {
-		// Real Audio CD
 
-		// Unfortunately I can't implement this atm
-		// since SDL doesn't seem to offer an interface method for this.
-
-		// g_system->setVolumeCD(_cd.volume);
-	}
+	// Audio CD emulation
+	if (_emulating && isPlaying())
+		_mixer->setChannelVolume(_handle, _cd.volume);
 }
 
 void DefaultAudioCDManager::setBalance(int8 balance) {
 	_cd.balance = balance;
-	if (_emulating) {
-		// Audio CD emulation
-		if (isPlaying())
-			_mixer->setChannelBalance(_handle, _cd.balance);
-	} else {
-		// Real Audio CD
 
-		// Unfortunately I can't implement this atm
-		// since SDL doesn't seem to offer an interface method for this.
-
-		// g_system->setBalanceCD(_cd.balance);
-	}
+	// Audio CD emulation
+	if (_emulating && isPlaying())
+		_mixer->setChannelBalance(_handle, _cd.balance);
 }
 
 void DefaultAudioCDManager::update() {
@@ -142,8 +137,6 @@ void DefaultAudioCDManager::update() {
 			// or not.
 			_emulating = false;
 		}
-	} else {
-		updateCD();
 	}
 }
 
@@ -152,3 +145,21 @@ DefaultAudioCDManager::Status DefaultAudioCDManager::getStatus() const {
 	info.playing = isPlaying();
 	return info;
 }
+
+bool DefaultAudioCDManager::openRealCD() {
+	Common::String cdrom = ConfMan.get("cdrom");
+
+	// Try to parse it as an int
+	char *endPos;
+	int drive = strtol(cdrom.c_str(), &endPos, 0);
+
+	// If not an integer, treat as a drive path
+	if (endPos == cdrom.c_str())
+		return openCD(cdrom);
+
+	if (drive < 0)
+		return false;
+
+	return openCD(drive);
+}
+
diff --git a/backends/audiocd/default/default-audiocd.h b/backends/audiocd/default/default-audiocd.h
index 9e4ba6b33e..e3fbb4b5a1 100644
--- a/backends/audiocd/default/default-audiocd.h
+++ b/backends/audiocd/default/default-audiocd.h
@@ -26,29 +26,48 @@
 #include "backends/audiocd/audiocd.h"
 #include "audio/mixer.h"
 
+namespace Common {
+class String;
+} // End of namespace Common
+
 /**
  * The default audio cd manager. Implements emulation of audio cd playback.
  */
 class DefaultAudioCDManager : public AudioCDManager {
 public:
 	DefaultAudioCDManager();
-	virtual ~DefaultAudioCDManager() {}
-
-	void play(int track, int numLoops, int startFrame, int duration, bool only_emulate = false);
-	void stop();
-	bool isPlaying() const;
-	void setVolume(byte volume);
-	void setBalance(int8 balance);
-	void update();
+	virtual ~DefaultAudioCDManager();
+
+	virtual bool open();
+	virtual void close();
+	virtual bool play(int track, int numLoops, int startFrame, int duration, bool onlyEmulate = false);
+	virtual void stop();
+	virtual bool isPlaying() const;
+	virtual void setVolume(byte volume);
+	virtual void setBalance(int8 balance);
+	virtual void update();
 	virtual Status getStatus() const; // Subclasses should override for better status results
 
+protected:
+	/**
+	 * Open a CD using the cdrom config variable
+	 */
+	bool openRealCD();
+
+	/**
+	 * Open a CD using the specified drive index
+	 * @param drive The index of the drive
+	 * @note The index is implementation-defined, but 0 is always the best choice
+	 */
 	virtual bool openCD(int drive) { return false; }
-	virtual void updateCD() {}
-	virtual bool pollCD() const { return false; }
-	virtual void playCD(int track, int num_loops, int start_frame, int duration) {}
-	virtual void stopCD() {}
 
-protected:
+	/**
+	 * Open a CD from a specific drive
+	 * @param drive The name of the drive/path
+	 * @note The drive parameter is platform-specific
+	 */
+	virtual bool openCD(const Common::String &drive) { return false; }
+
 	Audio::SoundHandle _handle;
 	bool _emulating;
 
diff --git a/backends/audiocd/linux/linux-audiocd.cpp b/backends/audiocd/linux/linux-audiocd.cpp
new file mode 100644
index 0000000000..caa0265637
--- /dev/null
+++ b/backends/audiocd/linux/linux-audiocd.cpp
@@ -0,0 +1,471 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * Original license header:
+ *
+ * Cabal - Legacy Game Implementations
+ *
+ * Cabal is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+// Enable all forbidden symbols to allow us to include and use necessary APIs.
+#define FORBIDDEN_SYMBOL_ALLOW_ALL
+
+#include "backends/audiocd/linux/linux-audiocd.h"
+
+#ifdef USE_LINUXCD
+
+#include "backends/audiocd/audiocd-stream.h"
+#include "backends/audiocd/default/default-audiocd.h"
+#include "common/array.h"
+#include "common/config-manager.h"
+#include "common/str.h"
+#include "common/debug.h"
+
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <linux/cdrom.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+enum {
+	kLeadoutTrack = 0xAA
+};
+
+enum {
+	kBytesPerFrame = 2352,
+	kSamplesPerFrame = kBytesPerFrame / 2
+};
+
+enum {
+	kSecondsPerMinute = 60,
+	kFramesPerSecond = 75
+};
+
+enum {
+	// Keep about a second's worth of audio in the buffer
+	kBufferThreshold = kFramesPerSecond
+};
+
+static int getFrameCount(const cdrom_msf0 &msf) {
+	int time = msf.minute;
+	time *= kSecondsPerMinute;
+	time += msf.second;
+	time *= kFramesPerSecond;
+	time += msf.frame;
+	return time;
+}
+
+// Helper function to convert an error code into a human-readable message
+static Common::String getErrorMessage(int errorCode) {
+	char buf[256];
+	buf[0] = 0;
+
+#ifdef _GNU_SOURCE
+	// glibc sucks
+	return Common::String(strerror_r(errorCode, buf, sizeof(buf)));
+#else
+	strerror_r(errorCode, buf, sizeof(buf));
+	return Common::String(buf);
+#endif
+}
+
+class LinuxAudioCDStream : public AudioCDStream {
+public:
+	LinuxAudioCDStream(int fd, const cdrom_tocentry &startEntry, const cdrom_tocentry &endEntry);
+	~LinuxAudioCDStream();
+
+protected:
+	uint getStartFrame() const;
+	uint getEndFrame() const;
+	bool readFrame(int frame, int16 *buffer);
+
+private:
+	int _fd;
+	const cdrom_tocentry &_startEntry, &_endEntry;
+};
+
+LinuxAudioCDStream::LinuxAudioCDStream(int fd, const cdrom_tocentry &startEntry, const cdrom_tocentry &endEntry) :
+	_fd(fd), _startEntry(startEntry), _endEntry(endEntry) {
+	// We fill the buffer here already to prevent any out of sync issues due
+	// to the CD not yet having spun up.
+	startTimer(true);
+}
+
+LinuxAudioCDStream::~LinuxAudioCDStream() {
+	stopTimer();
+}
+
+bool LinuxAudioCDStream::readFrame(int frame, int16 *buffer) {
+	// Create the argument
+	union {
+		cdrom_msf msf;
+		char buffer[kBytesPerFrame];
+	} arg;
+
+	int seconds = frame / kFramesPerSecond;
+	frame %= kFramesPerSecond;
+	int minutes = seconds / kSecondsPerMinute;
+	seconds %= kSecondsPerMinute;
+
+	// Request to read that frame
+	// We don't use CDROMREADAUDIO, as it seems to cause kernel
+	// panics on ejecting discs. Probably bad to eject the disc
+	// while playing, but at least let's try to prevent that case.
+	arg.msf.cdmsf_min0 = minutes;
+	arg.msf.cdmsf_sec0 = seconds;
+	arg.msf.cdmsf_frame0 = frame;
+	// The "end" part is irrelevant (why isn't cdrom_msf0 the type
+	// instead?)
+
+	if (ioctl(_fd, CDROMREADRAW, &arg) < 0) {
+		warning("Failed to CD read audio: %s", getErrorMessage(errno).c_str());
+		return false;
+	}
+
+	memcpy(buffer, arg.buffer, kBytesPerFrame);
+	return true;
+}
+
+uint LinuxAudioCDStream::getStartFrame() const {
+	return getFrameCount(_startEntry.cdte_addr.msf);
+}
+
+uint LinuxAudioCDStream::getEndFrame() const {
+	return getFrameCount(_endEntry.cdte_addr.msf);
+}
+
+
+class LinuxAudioCDManager : public DefaultAudioCDManager {
+public:
+	LinuxAudioCDManager();
+	~LinuxAudioCDManager();
+
+	bool open();
+	void close();
+	bool play(int track, int numLoops, int startFrame, int duration, bool onlyEmulate = false);
+
+protected:
+	bool openCD(int drive);
+	bool openCD(const Common::String &drive);
+
+private:
+	struct Device {
+		Device(const Common::String &n, dev_t d) : name(n), device(d) {}
+		Common::String name;
+		dev_t device;
+	};
+
+	typedef Common::Array<Device> DeviceList;
+	DeviceList scanDevices();
+	bool tryAddDrive(DeviceList &devices, const Common::String &drive);
+	bool tryAddDrive(DeviceList &devices, const Common::String &drive, dev_t device);
+	bool tryAddDrive(DeviceList &devices, dev_t device);
+	bool tryAddPath(DeviceList &devices, const Common::String &path);
+	bool tryAddGamePath(DeviceList &devices);
+	bool loadTOC();
+	static bool hasDevice(const DeviceList &devices, dev_t device);
+
+	int _fd;
+	cdrom_tochdr _tocHeader;
+	Common::Array<cdrom_tocentry> _tocEntries;
+};
+
+static bool isTrayEmpty(int errorNumber) {
+	switch (errorNumber) {
+	case EIO:
+	case ENOENT:
+	case EINVAL:
+#ifdef ENOMEDIUM
+	case ENOMEDIUM:
+#endif
+		return true;
+	}
+
+	return false;
+}
+
+LinuxAudioCDManager::LinuxAudioCDManager() {
+	_fd = -1;
+	memset(&_tocHeader, 0, sizeof(_tocHeader));
+}
+
+LinuxAudioCDManager::~LinuxAudioCDManager() {
+	close();
+}
+
+bool LinuxAudioCDManager::open() {
+	close();
+
+	if (openRealCD())
+		return true;
+
+	return DefaultAudioCDManager::open();
+}
+
+void LinuxAudioCDManager::close() {
+	DefaultAudioCDManager::close();
+
+	if (_fd < 0)
+		return;
+
+	::close(_fd);
+	memset(&_tocHeader, 0, sizeof(_tocHeader));
+	_tocEntries.clear();
+}
+
+bool LinuxAudioCDManager::openCD(int drive) {
+	DeviceList devices = scanDevices();
+	if (drive >= (int)devices.size())
+		return false;
+
+	_fd = ::open(devices[drive].name.c_str(), O_RDONLY | O_NONBLOCK, 0);
+	if (_fd < 0)
+		return false;
+
+	if (!loadTOC()) {
+		close();
+		return false;
+	}
+
+	return true;
+}
+
+bool LinuxAudioCDManager::openCD(const Common::String &drive) {
+	DeviceList devices;
+	if (!tryAddDrive(devices, drive) && !tryAddPath(devices, drive))
+		return false;
+
+	_fd = ::open(devices[0].name.c_str(), O_RDONLY | O_NONBLOCK, 0);
+	if (_fd < 0)
+		return false;
+
+	if (!loadTOC()) {
+		close();
+		return false;
+	}
+
+	return true;
+}
+
+bool LinuxAudioCDManager::play(int track, int numLoops, int startFrame, int duration, bool onlyEmulate) {
+	// Prefer emulation
+	if (DefaultAudioCDManager::play(track, numLoops, startFrame, duration, onlyEmulate))
+		return true;
+
+	// If we're set to only emulate, or have no CD drive, return here
+	if (onlyEmulate || _fd < 0)
+		return false;
+
+	// HACK: For now, just assume that track number is right
+	// That only works because ScummVM uses the wrong track number anyway
+
+	if (track >= (int)_tocEntries.size() - 1) {
+		warning("No such track %d", track);
+		return false;
+	}
+
+	// Bail if the track isn't an audio track
+	if ((_tocEntries[track].cdte_ctrl & 0x04) != 0) {
+		warning("Track %d is not audio", track);
+		return false;
+	}
+
+	// Create the AudioStream and play it
+	debug(1, "Playing CD track %d", track);
+
+	Audio::SeekableAudioStream *audioStream = new LinuxAudioCDStream(_fd, _tocEntries[track], _tocEntries[track + 1]);
+
+	Audio::Timestamp start = Audio::Timestamp(0, startFrame, 75);
+	Audio::Timestamp end = (duration == 0) ? audioStream->getLength() : Audio::Timestamp(0, startFrame + duration, 75);
+
+	// Fake emulation since we're really playing an AudioStream
+	_emulating = true;
+
+	_mixer->playStream(
+	    Audio::Mixer::kMusicSoundType,
+	    &_handle,
+	    Audio::makeLoopingAudioStream(audioStream, start, end, (numLoops < 1) ? numLoops + 1 : numLoops),
+	    -1,
+	    _cd.volume,
+	    _cd.balance,
+	    DisposeAfterUse::YES,
+	    true);
+
+	return true;
+}
+
+LinuxAudioCDManager::DeviceList LinuxAudioCDManager::scanDevices() {
+	DeviceList devices;
+
+	// Try to use the game's path first as the device
+	tryAddGamePath(devices);
+
+	// Try adding the default CD-ROM
+	tryAddDrive(devices, "/dev/cdrom");
+
+	// TODO: Try others?
+
+	return devices;
+}
+
+bool LinuxAudioCDManager::tryAddDrive(DeviceList &devices, const Common::String &drive) {
+	struct stat stbuf;
+	if (stat(drive.c_str(), &stbuf) < 0)
+		return false;
+
+	// Must be a character or block device
+	if (!S_ISCHR(stbuf.st_mode) && !S_ISBLK(stbuf.st_mode))
+		return false;
+
+	return tryAddDrive(devices, drive, stbuf.st_rdev);
+}
+
+bool LinuxAudioCDManager::tryAddDrive(DeviceList &devices, const Common::String &drive, dev_t device) {
+	if (hasDevice(devices, device))
+		return true;
+
+	// Try opening the device and seeing if it is a CD-ROM drve
+	int fd = ::open(drive.c_str(), O_RDONLY | O_NONBLOCK, 0);
+	if (fd >= 0) {
+		cdrom_subchnl info;
+		info.cdsc_format = CDROM_MSF;
+
+		bool isCD = ioctl(fd, CDROMSUBCHNL, &info) == 0 || isTrayEmpty(errno);
+		::close(fd);
+		if (isCD) {
+			devices.push_back(Device(drive, device));
+			return true;
+		}
+	}
+
+	return false;
+}
+
+bool LinuxAudioCDManager::tryAddDrive(DeviceList &devices, dev_t device) {
+	// Construct the block name
+	// TODO: libblkid's blkid_devno_to_devname is exactly what we look for.
+	// This requires an external dependency though.
+	Common::String name = Common::String::format("/dev/block/%d:%d", major(device), minor(device));
+
+	return tryAddDrive(devices, name, device);
+}
+
+bool LinuxAudioCDManager::tryAddPath(DeviceList &devices, const Common::String &path) {
+	struct stat stbuf;
+	if (stat(path.c_str(), &stbuf) < 0)
+		return false;
+
+	return tryAddDrive(devices, stbuf.st_dev);
+}
+
+bool LinuxAudioCDManager::tryAddGamePath(DeviceList &devices) {
+	if (!ConfMan.hasKey("path"))
+		return false;
+
+	return tryAddPath(devices, ConfMan.get("path"));
+}
+
+bool LinuxAudioCDManager::loadTOC() {
+	if (_fd < 0)
+		return false;
+
+	if (ioctl(_fd, CDROMREADTOCHDR, &_tocHeader) < 0)
+		return false;
+
+	debug(4, "CD: Start Track: %d, End Track %d", _tocHeader.cdth_trk0, _tocHeader.cdth_trk1);
+
+	for (int i = _tocHeader.cdth_trk0; i <= _tocHeader.cdth_trk1; i++) {
+		cdrom_tocentry entry;
+		memset(&entry, 0, sizeof(entry));
+		entry.cdte_track = i;
+		entry.cdte_format = CDROM_MSF;
+
+		if (ioctl(_fd, CDROMREADTOCENTRY, &entry) < 0)
+			return false;
+
+#if 0
+		debug("Entry:");
+		debug("\tTrack: %d", entry.cdte_track);
+		debug("\tAdr: %d", entry.cdte_adr);
+		debug("\tCtrl: %d", entry.cdte_ctrl);
+		debug("\tFormat: %d", entry.cdte_format);
+		debug("\tMSF: %d:%d:%d", entry.cdte_addr.msf.minute, entry.cdte_addr.msf.second, entry.cdte_addr.msf.frame);
+		debug("\tMode: %d\n", entry.cdte_datamode);
+#endif
+
+		_tocEntries.push_back(entry);
+	}
+
+	// Fetch the leadout so we can get the length of the last frame
+	cdrom_tocentry entry;
+	memset(&entry, 0, sizeof(entry));
+	entry.cdte_track = kLeadoutTrack;
+	entry.cdte_format = CDROM_MSF;
+
+	if (ioctl(_fd, CDROMREADTOCENTRY, &entry) < 0)
+		return false;
+
+#if 0
+	debug("Lead out:");
+	debug("\tTrack: %d", entry.cdte_track);
+	debug("\tAdr: %d", entry.cdte_adr);
+	debug("\tCtrl: %d", entry.cdte_ctrl);
+	debug("\tFormat: %d", entry.cdte_format);
+	debug("\tMSF: %d:%d:%d", entry.cdte_addr.msf.minute, entry.cdte_addr.msf.second, entry.cdte_addr.msf.frame);
+	debug("\tMode: %d\n", entry.cdte_datamode);
+#endif
+
+	_tocEntries.push_back(entry);
+	return true;
+}
+
+bool LinuxAudioCDManager::hasDevice(const DeviceList &devices, dev_t device) {
+	for (DeviceList::const_iterator it = devices.begin(); it != devices.end(); it++)
+		if (it->device == device)
+			return true;
+
+	return false;
+}
+
+AudioCDManager *createLinuxAudioCDManager() {
+	return new LinuxAudioCDManager();
+}
+
+#endif // USE_LINUXCD
diff --git a/backends/audiocd/linux/linux-audiocd.h b/backends/audiocd/linux/linux-audiocd.h
new file mode 100644
index 0000000000..09d6353991
--- /dev/null
+++ b/backends/audiocd/linux/linux-audiocd.h
@@ -0,0 +1,62 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * Original license header:
+ *
+ * Cabal - Legacy Game Implementations
+ *
+ * Cabal is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef BACKENDS_AUDIOCD_LINUX_H
+#define BACKENDS_AUDIOCD_LINUX_H
+
+#include "common/scummsys.h"
+
+#ifdef USE_LINUXCD
+
+class AudioCDManager;
+
+/**
+ * Create an audio CD manager using the Linux CDROM API
+ */
+AudioCDManager *createLinuxAudioCDManager();
+
+#endif
+
+#endif
+
diff --git a/backends/audiocd/macosx/macosx-audiocd.cpp b/backends/audiocd/macosx/macosx-audiocd.cpp
new file mode 100644
index 0000000000..e8d41c3e10
--- /dev/null
+++ b/backends/audiocd/macosx/macosx-audiocd.cpp
@@ -0,0 +1,306 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * Original license header:
+ *
+ * Cabal - Legacy Game Implementations
+ *
+ * Cabal is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifdef MACOSX
+
+#include <sys/stat.h>
+#include <sys/mount.h>
+#include <limits.h>
+
+#include "common/scummsys.h"
+
+#include "audio/audiostream.h"
+#include "audio/decoders/aiff.h"
+#include "audio/timestamp.h"
+#include "common/config-manager.h"
+#include "common/debug.h"
+#include "common/fs.h"
+#include "common/hashmap.h"
+#include "common/textconsole.h"
+#include "backends/audiocd/default/default-audiocd.h"
+#include "backends/audiocd/macosx/macosx-audiocd.h"
+#include "backends/fs/stdiostream.h"
+
+// Partially based on SDL's code
+
+/**
+ * The Mac OS X audio cd manager. Implements real audio cd playback.
+ */
+class MacOSXAudioCDManager : public DefaultAudioCDManager {
+public:
+	MacOSXAudioCDManager() {}
+	~MacOSXAudioCDManager();
+
+	bool open();
+	void close();
+	bool play(int track, int numLoops, int startFrame, int duration, bool onlyEmulate = false);
+
+protected:
+	bool openCD(int drive);
+	bool openCD(const Common::String &drive);
+
+private:
+	struct Drive {
+		Drive(const Common::String &m, const Common::String &d, const Common::String &f) :
+			mountPoint(m), deviceName(d), fsType(f) {}
+
+		Common::String mountPoint;
+		Common::String deviceName;
+		Common::String fsType;
+	};
+
+	typedef Common::Array<Drive> DriveList;
+	DriveList detectAllDrives();
+	DriveList detectCDDADrives();
+
+	bool findTrackNames(const Common::String &drivePath);
+
+	Common::HashMap<uint, Common::String> _trackMap;
+};
+
+MacOSXAudioCDManager::~MacOSXAudioCDManager() {
+	close();
+}
+
+bool MacOSXAudioCDManager::open() {
+	close();
+
+	if (openRealCD())
+		return true;
+
+	return DefaultAudioCDManager::open();
+}
+
+/**
+ * Find the base disk number of device name.
+ * Returns -1 if mount point is not /dev/disk*
+ */
+static int findBaseDiskNumber(const Common::String &diskName) {
+	if (!diskName.hasPrefix("/dev/disk"))
+		return -1;
+
+	const char *startPtr = diskName.c_str() + 9;
+	char *endPtr;
+	int baseDiskNumber = strtol(startPtr, &endPtr, 10);
+	if (startPtr == endPtr)
+		return -1;
+
+	return baseDiskNumber;
+}
+
+bool MacOSXAudioCDManager::openCD(int drive) {
+	DriveList allDrives = detectAllDrives();
+	if (allDrives.empty())
+		return false;
+
+	DriveList cddaDrives;
+
+	// Try to get the volume related to the game's path
+	if (ConfMan.hasKey("path")) {
+		Common::String gamePath = ConfMan.get("path");
+		struct statfs gamePathStat;
+		if (statfs(gamePath.c_str(), &gamePathStat) == 0) {
+			int baseDiskNumber = findBaseDiskNumber(gamePathStat.f_mntfromname);
+			if (baseDiskNumber >= 0) {
+				// Look for a CDDA drive with the same base disk number
+				for (uint32 i = 0; i < allDrives.size(); i++) {
+					if (allDrives[i].fsType == "cddafs" && findBaseDiskNumber(allDrives[i].deviceName) == baseDiskNumber) {
+						debug(1, "Preferring drive '%s'", allDrives[i].mountPoint.c_str());
+						cddaDrives.push_back(allDrives[i]);
+						allDrives.remove_at(i);
+						break;
+					}
+				}
+			}
+		}
+	}
+
+	// Add the remaining CDDA drives to the CDDA list
+	for (uint32 i = 0; i < allDrives.size(); i++)
+		if (allDrives[i].fsType == "cddafs")
+			cddaDrives.push_back(allDrives[i]);
+
+	if (drive >= (int)cddaDrives.size())
+		return false;
+
+	debug(1, "Using '%s' as the CD drive", cddaDrives[drive].mountPoint.c_str());
+
+	return findTrackNames(cddaDrives[drive].mountPoint);
+}
+
+bool MacOSXAudioCDManager::openCD(const Common::String &drive) {
+	DriveList drives = detectAllDrives();
+
+	for (uint32 i = 0; i < drives.size(); i++) {
+		if (drives[i].fsType != "cddafs")
+			continue;
+
+		if (drives[i].mountPoint == drive || drives[i].deviceName == drive) {
+			debug(1, "Using '%s' as the CD drive", drives[i].mountPoint.c_str());
+			return findTrackNames(drives[i].mountPoint);
+		}
+	}
+
+	return false;
+}
+
+void MacOSXAudioCDManager::close() {
+	DefaultAudioCDManager::close();
+	_trackMap.clear();
+}
+
+enum {
+	// Some crazy high number that we'll never actually hit
+	kMaxDriveCount = 256
+};
+
+MacOSXAudioCDManager::DriveList MacOSXAudioCDManager::detectAllDrives() {
+	// Fetch the lists of drives
+	struct statfs driveStats[kMaxDriveCount];
+	int foundDrives = getfsstat(driveStats, sizeof(driveStats), MNT_WAIT);
+	if (foundDrives <= 0)
+		return DriveList();
+
+	DriveList drives;
+	for (int i = 0; i < foundDrives; i++)
+		drives.push_back(Drive(driveStats[i].f_mntonname, driveStats[i].f_mntfromname, driveStats[i].f_fstypename));
+
+	return drives;
+}
+
+bool MacOSXAudioCDManager::play(int track, int numLoops, int startFrame, int duration, bool onlyEmulate) {
+	// Prefer emulation
+	if (DefaultAudioCDManager::play(track, numLoops, startFrame, duration, onlyEmulate))
+		return true;
+
+	// If we're set to only emulate, or have no CD drive, return here
+	if (onlyEmulate || !_trackMap.contains(track))
+		return false;
+
+	if (!numLoops && !startFrame)
+		return false;
+
+	// Now load the AIFF track from the name
+	Common::String fileName = _trackMap[track];
+	Common::SeekableReadStream *stream = StdioStream::makeFromPath(fileName.c_str(), false);
+
+	if (!stream) {
+		warning("Failed to open track '%s'", fileName.c_str());
+		return false;
+	}
+
+	Audio::AudioStream *audioStream = Audio::makeAIFFStream(stream, DisposeAfterUse::YES);
+	if (!audioStream) {
+		warning("Track '%s' is not an AIFF track", fileName.c_str());
+		return false;
+	}
+
+	Audio::SeekableAudioStream *seekStream = dynamic_cast<Audio::SeekableAudioStream *>(audioStream);
+	if (!seekStream) {
+		warning("Track '%s' is not seekable", fileName.c_str());
+		return false;
+	}
+
+	Audio::Timestamp start = Audio::Timestamp(0, startFrame, 75);
+	Audio::Timestamp end = duration ? Audio::Timestamp(0, startFrame + duration, 75) : seekStream->getLength();
+
+	// Fake emulation since we're really playing an AIFF file
+	_emulating = true;
+
+	_mixer->playStream(Audio::Mixer::kMusicSoundType, &_handle,
+	                   Audio::makeLoopingAudioStream(seekStream, start, end, (numLoops < 1) ? numLoops + 1 : numLoops), -1, _cd.volume, _cd.balance);
+	return true;
+}
+
+bool MacOSXAudioCDManager::findTrackNames(const Common::String &drivePath) {
+	Common::FSNode directory(drivePath);
+
+	if (!directory.exists()) {
+		warning("Directory '%s' does not exist", drivePath.c_str());
+		return false;
+	}
+
+	if (!directory.isDirectory()) {
+		warning("'%s' is not a directory", drivePath.c_str());
+		return false;
+	}
+
+	Common::FSList children;
+	if (!directory.getChildren(children, Common::FSNode::kListFilesOnly)) {
+		warning("Failed to find children for '%s'", drivePath.c_str());
+		return false;
+	}
+
+	for (uint32 i = 0; i < children.size(); i++) {
+		if (!children[i].isDirectory()) {
+			Common::String fileName = children[i].getName();
+
+			if (fileName.hasSuffix(".aiff") || fileName.hasSuffix(".cdda")) {
+				uint j = 0;
+
+				// Search for the track ID in the file name.
+				for (; j < fileName.size() && !Common::isDigit(fileName[j]); j++)
+					;
+
+				const char *trackIDString = fileName.c_str() + j;
+				char *endPtr = nullptr;
+				long trackID = strtol(trackIDString, &endPtr, 10);
+
+				if (trackIDString != endPtr && trackID > 0 && trackID < UINT_MAX) {
+					_trackMap[trackID - 1] = drivePath + '/' + fileName;
+				} else {
+					warning("Invalid track file name: '%s'", fileName.c_str());
+				}
+			}
+		}
+	}
+
+	return true;
+}
+
+AudioCDManager *createMacOSXAudioCDManager() {
+	return new MacOSXAudioCDManager();
+}
+
+#endif // MACOSX
diff --git a/backends/audiocd/macosx/macosx-audiocd.h b/backends/audiocd/macosx/macosx-audiocd.h
new file mode 100644
index 0000000000..55b8c7b8c6
--- /dev/null
+++ b/backends/audiocd/macosx/macosx-audiocd.h
@@ -0,0 +1,61 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * Original license header:
+ *
+ * Cabal - Legacy Game Implementations
+ *
+ * Cabal is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef BACKENDS_AUDIOCD_MACOSX_H
+#define BACKENDS_AUDIOCD_MACOSX_H
+
+#include "common/scummsys.h"
+
+#ifdef MACOSX
+
+class AudioCDManager;
+
+/**
+ * Create an audio CD manager for Mac OS X
+ */
+AudioCDManager *createMacOSXAudioCDManager();
+
+#endif
+
+#endif // 
diff --git a/backends/audiocd/sdl/sdl-audiocd.cpp b/backends/audiocd/sdl/sdl-audiocd.cpp
index ff50c56af3..3558fb5671 100644
--- a/backends/audiocd/sdl/sdl-audiocd.cpp
+++ b/backends/audiocd/sdl/sdl-audiocd.cpp
@@ -43,10 +43,16 @@ SdlAudioCDManager::SdlAudioCDManager()
 }
 
 SdlAudioCDManager::~SdlAudioCDManager() {
-	if (_cdrom) {
-		SDL_CDStop(_cdrom);
-		SDL_CDClose(_cdrom);
-	}
+	close();
+}
+
+bool SdlAudioCDManager::open() {
+	close();
+
+	if (openRealCD())
+		return true;
+
+	return DefaultAudioCDManager::open();
 }
 
 bool SdlAudioCDManager::openCD(int drive) {
@@ -67,44 +73,69 @@ bool SdlAudioCDManager::openCD(int drive) {
 	return (_cdrom != NULL);
 }
 
-void SdlAudioCDManager::stopCD() {
+void SdlAudioCDManager::close() {
+	DefaultAudioCDManager::close();
+
+	if (_cdrom) {
+                SDL_CDStop(_cdrom);
+                SDL_CDClose(_cdrom);
+		_cdrom = 0;
+        }
+}
+
+void SdlAudioCDManager::stop() {
+	DefaultAudioCDManager::stop();
+
 	// Stop CD Audio in 1/10th of a second
 	_cdStopTime = SDL_GetTicks() + 100;
 	_cdNumLoops = 0;
 }
 
-void SdlAudioCDManager::playCD(int track, int num_loops, int start_frame, int duration) {
-	if (!num_loops && !start_frame)
-		return;
+bool SdlAudioCDManager::play(int track, int numLoops, int startFrame, int duration, bool onlyEmulate) {
+	// Prefer emulation
+	if (DefaultAudioCDManager::play(track, numLoops, startFrame, duration, onlyEmulate))
+		return true;
 
-	if (!_cdrom)
-		return;
+	// If we're set to only emulate, or have no CD, return here
+	if (onlyEmulate || !_cdrom)
+		return false;
 
+	if (!numLoops && !startFrame)
+		return false;
+
+	// FIXME: Explain this.
 	if (duration > 0)
 		duration += 5;
 
 	_cdTrack = track;
-	_cdNumLoops = num_loops;
-	_cdStartFrame = start_frame;
+	_cdNumLoops = numLoops;
+	_cdStartFrame = startFrame;
 
 	SDL_CDStatus(_cdrom);
-	if (start_frame == 0 && duration == 0)
+	if (startFrame == 0 && duration == 0)
 		SDL_CDPlayTracks(_cdrom, track, 0, 1, 0);
 	else
-		SDL_CDPlayTracks(_cdrom, track, start_frame, 0, duration);
+		SDL_CDPlayTracks(_cdrom, track, startFrame, 0, duration);
 	_cdDuration = duration;
 	_cdStopTime = 0;
 	_cdEndTime = SDL_GetTicks() + _cdrom->track[track].length * 1000 / CD_FPS;
+
+	return true;
 }
 
-bool SdlAudioCDManager::pollCD() const {
+bool SdlAudioCDManager::isPlaying() const {
+	if (DefaultAudioCDManager::isPlaying())
+		return true;
+
 	if (!_cdrom)
 		return false;
 
 	return (_cdNumLoops != 0 && (SDL_GetTicks() < _cdEndTime || SDL_CDStatus(_cdrom) == CD_PLAYING));
 }
 
-void SdlAudioCDManager::updateCD() {
+void SdlAudioCDManager::update() {
+	DefaultAudioCDManager::update();
+
 	if (!_cdrom)
 		return;
 
diff --git a/backends/audiocd/sdl/sdl-audiocd.h b/backends/audiocd/sdl/sdl-audiocd.h
index bfad7b6805..91895dac99 100644
--- a/backends/audiocd/sdl/sdl-audiocd.h
+++ b/backends/audiocd/sdl/sdl-audiocd.h
@@ -37,12 +37,15 @@ public:
 	SdlAudioCDManager();
 	virtual ~SdlAudioCDManager();
 
+	virtual bool open();
+	virtual void close();
+	virtual bool play(int track, int numLoops, int startFrame, int duration, bool onlyEmulate = false);
+	virtual void stop();
+	virtual bool isPlaying() const;
+	virtual void update();
+
 protected:
 	virtual bool openCD(int drive);
-	virtual void updateCD();
-	virtual bool pollCD() const;
-	virtual void playCD(int track, int num_loops, int start_frame, int duration);
-	virtual void stopCD();
 
 	SDL_CD *_cdrom;
 	int _cdTrack, _cdNumLoops, _cdStartFrame, _cdDuration;
diff --git a/backends/audiocd/win32/msvc/ntddcdrm.h b/backends/audiocd/win32/msvc/ntddcdrm.h
new file mode 100644
index 0000000000..18527e2675
--- /dev/null
+++ b/backends/audiocd/win32/msvc/ntddcdrm.h
@@ -0,0 +1,362 @@
+/**
+ * @file ntddcdrm.h
+ * Copyright 2012, 2013 MinGW.org project
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+/* Created by Casper S. Hornstrup <chorns@users.sourceforge.net> */
+#ifndef __NTDDCDRM_H
+#define __NTDDCDRM_H
+#if 0 // Added to make MSVC happy.
+#pragma GCC system_header
+#include <_mingw.h>
+#endif
+
+/*
+ * CDROM IOCTL interface.
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if 0 // Added to make MSVC happy.
+#include "ntddk.h"
+#include "ntddstor.h"
+#endif
+
+#define IOCTL_CDROM_BASE                  FILE_DEVICE_CD_ROM
+
+#define IOCTL_CDROM_CHECK_VERIFY \
+  CTL_CODE(IOCTL_CDROM_BASE, 0x0200, METHOD_BUFFERED, FILE_READ_ACCESS)
+
+#define IOCTL_CDROM_FIND_NEW_DEVICES \
+  CTL_CODE(IOCTL_CDROM_BASE, 0x0206, METHOD_BUFFERED, FILE_READ_ACCESS)
+
+#define IOCTL_CDROM_GET_CONTROL \
+  CTL_CODE(IOCTL_CDROM_BASE, 0x000D, METHOD_BUFFERED, FILE_READ_ACCESS)
+
+#define IOCTL_CDROM_GET_DRIVE_GEOMETRY \
+  CTL_CODE(IOCTL_CDROM_BASE, 0x0013, METHOD_BUFFERED, FILE_READ_ACCESS)
+
+#define IOCTL_CDROM_GET_LAST_SESSION \
+  CTL_CODE(IOCTL_CDROM_BASE, 0x000E, METHOD_BUFFERED, FILE_READ_ACCESS)
+
+#define IOCTL_CDROM_GET_VOLUME \
+  CTL_CODE(IOCTL_CDROM_BASE, 0x0005, METHOD_BUFFERED, FILE_READ_ACCESS)
+
+#define IOCTL_CDROM_PAUSE_AUDIO \
+  CTL_CODE(IOCTL_CDROM_BASE, 0x0003, METHOD_BUFFERED, FILE_READ_ACCESS)
+
+#define IOCTL_CDROM_PLAY_AUDIO_MSF \
+  CTL_CODE(IOCTL_CDROM_BASE, 0x0006, METHOD_BUFFERED, FILE_READ_ACCESS)
+
+#define IOCTL_CDROM_RAW_READ \
+  CTL_CODE(IOCTL_CDROM_BASE, 0x000F, METHOD_OUT_DIRECT,  FILE_READ_ACCESS)
+
+#define IOCTL_CDROM_READ_Q_CHANNEL \
+  CTL_CODE(IOCTL_CDROM_BASE, 0x000B, METHOD_BUFFERED, FILE_READ_ACCESS)
+
+#define IOCTL_CDROM_READ_TOC \
+  CTL_CODE(IOCTL_CDROM_BASE, 0x0000, METHOD_BUFFERED, FILE_READ_ACCESS)
+
+#define IOCTL_CDROM_READ_TOC_EX \
+  CTL_CODE(IOCTL_CDROM_BASE, 0x0015, METHOD_BUFFERED, FILE_READ_ACCESS)
+
+#define IOCTL_CDROM_RESUME_AUDIO \
+  CTL_CODE(IOCTL_CDROM_BASE, 0x0004, METHOD_BUFFERED, FILE_READ_ACCESS)
+
+#define IOCTL_CDROM_SEEK_AUDIO_MSF \
+  CTL_CODE(IOCTL_CDROM_BASE, 0x0001, METHOD_BUFFERED, FILE_READ_ACCESS)
+
+#define IOCTL_CDROM_SET_VOLUME \
+  CTL_CODE(IOCTL_CDROM_BASE, 0x000A, METHOD_BUFFERED, FILE_READ_ACCESS)
+
+#define IOCTL_CDROM_SIMBAD \
+  CTL_CODE(IOCTL_CDROM_BASE, 0x1003, METHOD_BUFFERED, FILE_READ_ACCESS)
+
+#define IOCTL_CDROM_STOP_AUDIO \
+  CTL_CODE(IOCTL_CDROM_BASE, 0x0002, METHOD_BUFFERED, FILE_READ_ACCESS)
+
+
+#define MAXIMUM_NUMBER_TRACKS             100
+#define MAXIMUM_CDROM_SIZE                804
+#define MINIMUM_CDROM_READ_TOC_EX_SIZE    2
+
+typedef struct _TRACK_DATA {
+  UCHAR  Reserved;
+  UCHAR  Control : 4;
+  UCHAR  Adr : 4;
+  UCHAR  TrackNumber;
+  UCHAR  Reserved1;
+  UCHAR  Address[4];
+} TRACK_DATA, *PTRACK_DATA;
+
+/* CDROM_DISK_DATA.DiskData flags */
+#define CDROM_DISK_AUDIO_TRACK            0x00000001
+#define CDROM_DISK_DATA_TRACK             0x00000002
+
+typedef struct _CDROM_DISK_DATA {
+  ULONG  DiskData;
+} CDROM_DISK_DATA, *PCDROM_DISK_DATA;
+
+typedef struct _CDROM_PLAY_AUDIO_MSF {
+  UCHAR  StartingM;
+  UCHAR  StartingS;
+  UCHAR  StartingF;
+  UCHAR  EndingM;
+  UCHAR  EndingS;
+  UCHAR  EndingF;
+} CDROM_PLAY_AUDIO_MSF, *PCDROM_PLAY_AUDIO_MSF;
+
+/* CDROM_READ_TOC_EX.Format constants */
+#define CDROM_READ_TOC_EX_FORMAT_TOC      0x00
+#define CDROM_READ_TOC_EX_FORMAT_SESSION  0x01
+#define CDROM_READ_TOC_EX_FORMAT_FULL_TOC 0x02
+#define CDROM_READ_TOC_EX_FORMAT_PMA      0x03
+#define CDROM_READ_TOC_EX_FORMAT_ATIP     0x04
+#define CDROM_READ_TOC_EX_FORMAT_CDTEXT   0x05
+
+typedef struct _CDROM_READ_TOC_EX {
+  UCHAR  Format : 4;
+  UCHAR  Reserved1 : 3;
+  UCHAR  Msf : 1;
+  UCHAR  SessionTrack;
+  UCHAR  Reserved2;
+  UCHAR  Reserved3;
+} CDROM_READ_TOC_EX, *PCDROM_READ_TOC_EX;
+
+typedef struct _CDROM_SEEK_AUDIO_MSF {
+  UCHAR  M;
+  UCHAR  S;
+  UCHAR  F;
+} CDROM_SEEK_AUDIO_MSF, *PCDROM_SEEK_AUDIO_MSF;
+
+/* CDROM_SUB_Q_DATA_FORMAT.Format constants */
+#define IOCTL_CDROM_SUB_Q_CHANNEL         0x00
+#define IOCTL_CDROM_CURRENT_POSITION      0x01
+#define IOCTL_CDROM_MEDIA_CATALOG         0x02
+#define IOCTL_CDROM_TRACK_ISRC            0x03
+
+typedef struct _CDROM_SUB_Q_DATA_FORMAT {
+  UCHAR Format;
+  UCHAR Track;
+} CDROM_SUB_Q_DATA_FORMAT, *PCDROM_SUB_Q_DATA_FORMAT;
+
+typedef struct _CDROM_TOC {
+  UCHAR  Length[2];
+  UCHAR  FirstTrack;
+  UCHAR  LastTrack;
+  TRACK_DATA  TrackData[MAXIMUM_NUMBER_TRACKS];
+} CDROM_TOC, *PCDROM_TOC;
+
+#define CDROM_TOC_SIZE sizeof(CDROM_TOC)
+
+typedef struct _CDROM_TOC_ATIP_DATA_BLOCK {
+  UCHAR  CdrwReferenceSpeed : 3;
+  UCHAR  Reserved3 : 1;
+  UCHAR  WritePower : 3;
+  UCHAR  True1 : 1;
+  UCHAR  Reserved4 : 6;
+  UCHAR  UnrestrictedUse : 1;
+  UCHAR  Reserved5 : 1;
+  UCHAR  A3Valid : 1;
+  UCHAR  A2Valid : 1;
+  UCHAR  A1Valid : 1;
+  UCHAR  Reserved6 : 3;
+  UCHAR  IsCdrw : 1;
+  UCHAR  True2 : 1;
+  UCHAR  Reserved7;
+  UCHAR  LeadInMsf[3];
+  UCHAR  Reserved8;
+  UCHAR  LeadOutMsf[3];
+  UCHAR  Reserved9;
+  UCHAR  A1Values[3];
+  UCHAR  Reserved10;
+  UCHAR  A2Values[3];
+  UCHAR  Reserved11;
+  UCHAR  A3Values[3];
+  UCHAR  Reserved12;
+} CDROM_TOC_ATIP_DATA_BLOCK, *PCDROM_TOC_ATIP_DATA_BLOCK;
+
+#if 0 // Added to make MSVC happy.
+typedef struct _CDROM_TOC_ATIP_DATA {
+  UCHAR  Length[2];
+  UCHAR  Reserved1;
+  UCHAR  Reserved2;
+  CDROM_TOC_ATIP_DATA_BLOCK  Descriptors[0];
+  CDROM_TOC_ATIP_DATA_BLOCK  Descriptors[1];
+} CDROM_TOC_ATIP_DATA, *PCDROM_TOC_ATIP_DATA;
+#endif
+
+/* CDROM_TOC_CD_TEXT_DATA_BLOCK.PackType constants */
+#define CDROM_CD_TEXT_PACK_ALBUM_NAME 0x80
+#define CDROM_CD_TEXT_PACK_PERFORMER  0x81
+#define CDROM_CD_TEXT_PACK_SONGWRITER 0x82
+#define CDROM_CD_TEXT_PACK_COMPOSER   0x83
+#define CDROM_CD_TEXT_PACK_ARRANGER   0x84
+#define CDROM_CD_TEXT_PACK_MESSAGES   0x85
+#define CDROM_CD_TEXT_PACK_DISC_ID    0x86
+#define CDROM_CD_TEXT_PACK_GENRE      0x87
+#define CDROM_CD_TEXT_PACK_TOC_INFO   0x88
+#define CDROM_CD_TEXT_PACK_TOC_INFO2  0x89
+#define CDROM_CD_TEXT_PACK_UPC_EAN    0x8e
+#define CDROM_CD_TEXT_PACK_SIZE_INFO  0x8f
+
+#if 0 // Added to make MSVC happy.
+typedef struct _CDROM_TOC_CD_TEXT_DATA_BLOCK {
+  UCHAR  PackType;
+  UCHAR  TrackNumber : 7;
+  UCHAR  ExtensionFlag : 1;
+  UCHAR  SequenceNumber;
+  UCHAR  CharacterPosition : 4;
+  UCHAR  BlockNumber : 3;
+  UCHAR  Unicode : 1;
+  _ANONYMOUS_UNION union {
+    UCHAR  Text[12];
+    WCHAR  WText[6];
+  } DUMMYUNIONNAME;
+  UCHAR  CRC[2];
+} CDROM_TOC_CD_TEXT_DATA_BLOCK, *PCDROM_TOC_CD_TEXT_DATA_BLOCK;
+
+typedef struct _CDROM_TOC_CD_TEXT_DATA {
+  UCHAR  Length[2];
+  UCHAR  Reserved1;
+  UCHAR  Reserved2;
+  CDROM_TOC_CD_TEXT_DATA_BLOCK  Descriptors[0];
+} CDROM_TOC_CD_TEXT_DATA, *PCDROM_TOC_CD_TEXT_DATA;
+#endif
+
+/* CDROM_TOC_FULL_TOC_DATA_BLOCK.Adr constants */
+#define ADR_NO_MODE_INFORMATION           0x0
+#define ADR_ENCODES_CURRENT_POSITION      0x1
+#define ADR_ENCODES_MEDIA_CATALOG         0x2
+#define ADR_ENCODES_ISRC                  0x3
+
+typedef struct _CDROM_TOC_FULL_TOC_DATA_BLOCK {
+  UCHAR  SessionNumber;
+  UCHAR  Control : 4;
+  UCHAR  Adr : 4;
+  UCHAR  Reserved1;
+  UCHAR  Point;
+  UCHAR  MsfExtra[3];
+  UCHAR  Zero;
+  UCHAR  Msf[3];
+} CDROM_TOC_FULL_TOC_DATA_BLOCK, *PCDROM_TOC_FULL_TOC_DATA_BLOCK;
+
+#if 0 // Added to make MSVC happy.
+typedef struct _CDROM_TOC_FULL_TOC_DATA {
+  UCHAR  Length[2];
+  UCHAR  FirstCompleteSession;
+  UCHAR  LastCompleteSession;
+  CDROM_TOC_FULL_TOC_DATA_BLOCK  Descriptors[0];
+} CDROM_TOC_FULL_TOC_DATA, *PCDROM_TOC_FULL_TOC_DATA;
+
+typedef struct _CDROM_TOC_PMA_DATA {
+  UCHAR  Length[2];
+  UCHAR  Reserved1;
+  UCHAR  Reserved2;
+  CDROM_TOC_FULL_TOC_DATA_BLOCK  Descriptors[0];
+} CDROM_TOC_PMA_DATA, *PCDROM_TOC_PMA_DATA;
+#endif
+
+/* SUB_Q_HEADER.AudioStatus constants */
+#define AUDIO_STATUS_NOT_SUPPORTED  0x00
+#define AUDIO_STATUS_IN_PROGRESS    0x11
+#define AUDIO_STATUS_PAUSED         0x12
+#define AUDIO_STATUS_PLAY_COMPLETE  0x13
+#define AUDIO_STATUS_PLAY_ERROR     0x14
+#define AUDIO_STATUS_NO_STATUS      0x15
+
+typedef struct _SUB_Q_HEADER {
+  UCHAR  Reserved;
+  UCHAR  AudioStatus;
+  UCHAR  DataLength[2];
+} SUB_Q_HEADER, *PSUB_Q_HEADER;
+
+typedef struct _SUB_Q_MEDIA_CATALOG_NUMBER {
+  SUB_Q_HEADER  Header;
+  UCHAR  FormatCode;
+  UCHAR  Reserved[3];
+  UCHAR  Reserved1 : 7;
+  UCHAR  Mcval :1;
+  UCHAR  MediaCatalog[15];
+} SUB_Q_MEDIA_CATALOG_NUMBER, *PSUB_Q_MEDIA_CATALOG_NUMBER;
+
+typedef struct _SUB_Q_TRACK_ISRC {
+  SUB_Q_HEADER  Header;
+  UCHAR  FormatCode;
+  UCHAR  Reserved0;
+  UCHAR  Track;
+  UCHAR  Reserved1;
+  UCHAR  Reserved2 : 7;
+  UCHAR  Tcval : 1;
+  UCHAR  TrackIsrc[15];
+} SUB_Q_TRACK_ISRC, *PSUB_Q_TRACK_ISRC;
+
+typedef struct _SUB_Q_CURRENT_POSITION {
+  SUB_Q_HEADER  Header;
+  UCHAR  FormatCode;
+  UCHAR  Control : 4;
+  UCHAR  ADR : 4;
+  UCHAR  TrackNumber;
+  UCHAR  IndexNumber;
+  UCHAR  AbsoluteAddress[4];
+  UCHAR  TrackRelativeAddress[4];
+} SUB_Q_CURRENT_POSITION, *PSUB_Q_CURRENT_POSITION;
+
+typedef union _SUB_Q_CHANNEL_DATA {
+  SUB_Q_CURRENT_POSITION  CurrentPosition;
+  SUB_Q_MEDIA_CATALOG_NUMBER  MediaCatalog;
+  SUB_Q_TRACK_ISRC  TrackIsrc;
+} SUB_Q_CHANNEL_DATA, *PSUB_Q_CHANNEL_DATA;
+
+/* CDROM_AUDIO_CONTROL.LbaFormat constants */
+#define AUDIO_WITH_PREEMPHASIS            0x1
+#define DIGITAL_COPY_PERMITTED            0x2
+#define AUDIO_DATA_TRACK                  0x4
+#define TWO_FOUR_CHANNEL_AUDIO            0x8
+
+typedef struct _CDROM_AUDIO_CONTROL {
+	UCHAR  LbaFormat;
+	USHORT  LogicalBlocksPerSecond;
+} CDROM_AUDIO_CONTROL, *PCDROM_AUDIO_CONTROL;
+
+typedef struct _VOLUME_CONTROL {
+  UCHAR  PortVolume[4];
+} VOLUME_CONTROL, *PVOLUME_CONTROL;
+
+typedef enum _TRACK_MODE_TYPE {
+	YellowMode2,
+	XAForm2,
+	CDDA
+} TRACK_MODE_TYPE, *PTRACK_MODE_TYPE;
+
+typedef struct __RAW_READ_INFO {
+	LARGE_INTEGER  DiskOffset;
+	ULONG  SectorCount;
+	TRACK_MODE_TYPE  TrackMode;
+} RAW_READ_INFO, *PRAW_READ_INFO;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __NTDDCDRM_H */
diff --git a/backends/audiocd/win32/win32-audiocd.cpp b/backends/audiocd/win32/win32-audiocd.cpp
new file mode 100644
index 0000000000..6c057efdb7
--- /dev/null
+++ b/backends/audiocd/win32/win32-audiocd.cpp
@@ -0,0 +1,388 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * Original license header:
+ *
+ * Cabal - Legacy Game Implementations
+ *
+ * Cabal is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifdef WIN32
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#undef ARRAYSIZE // winnt.h defines ARRAYSIZE, but we want our own one...
+
+#include "backends/audiocd/win32/win32-audiocd.h"
+
+#include "audio/audiostream.h"
+#include "backends/audiocd/audiocd-stream.h"
+#include "backends/audiocd/default/default-audiocd.h"
+#include "common/array.h"
+#include "common/config-manager.h"
+#include "common/debug.h"
+#include "common/mutex.h"
+#include "common/queue.h"
+#include "common/str.h"
+#include "common/timer.h"
+
+#include <winioctl.h>
+#if _MSC_VER < 1900
+// WORKAROUND: Older versions of MSVC might not supply DDK headers by default.
+// Visual Studio 2015 contains the required headers. We use a compatability
+// header from MinGW's w32api for all older versions.
+// TODO: Limit this to the Visual Studio versions which actually require this.
+#include "msvc/ntddcdrm.h"
+#elif defined(__MINGW32__) && !defined(__MINGW64__)
+// Classic MinGW uses non standard paths for DDK headers.
+#include <ddk/ntddcdrm.h>
+#else
+#include <ntddcdrm.h>
+#endif
+
+class Win32AudioCDStream : public AudioCDStream {
+public:
+	Win32AudioCDStream(HANDLE handle, const TRACK_DATA &startEntry, const TRACK_DATA &endEntry);
+	~Win32AudioCDStream();
+
+protected:
+	uint getStartFrame() const;
+	uint getEndFrame() const;
+	bool readFrame(int frame, int16 *buffer);
+
+private:
+	HANDLE _driveHandle;
+	const TRACK_DATA &_startEntry, &_endEntry;
+
+	enum {
+		// The CD-ROM pre-gap is 2s
+		kPreGapFrames = kFramesPerSecond * 2
+	};
+
+	static int getFrameCount(const TRACK_DATA &data) {
+		int time = data.Address[1];
+		time *= kSecondsPerMinute;
+		time += data.Address[2];
+		time *= kFramesPerSecond;
+		time += data.Address[3];
+		return time;
+	}
+};
+
+Win32AudioCDStream::Win32AudioCDStream(HANDLE handle, const TRACK_DATA &startEntry, const TRACK_DATA &endEntry) :
+	_driveHandle(handle), _startEntry(startEntry), _endEntry(endEntry) {
+	// We fill the buffer here already to prevent any out of sync issues due
+	// to the CD not yet having spun up.
+	startTimer(true);
+}
+
+Win32AudioCDStream::~Win32AudioCDStream() {
+	stopTimer();
+}
+
+uint Win32AudioCDStream::getStartFrame() const {
+	return getFrameCount(_startEntry);
+}
+
+uint Win32AudioCDStream::getEndFrame() const {
+	return getFrameCount(_endEntry);
+}
+
+bool Win32AudioCDStream::readFrame(int frame, int16 *buffer) {
+	// Request to read that frame
+	RAW_READ_INFO readAudio;
+	memset(&readAudio, 0, sizeof(readAudio));
+	readAudio.DiskOffset.QuadPart = (frame - kPreGapFrames) * 2048;
+	readAudio.SectorCount = 1;
+	readAudio.TrackMode = CDDA;
+
+	DWORD bytesReturned;
+	return DeviceIoControl(
+	           _driveHandle,
+	           IOCTL_CDROM_RAW_READ,
+	           &readAudio,
+	           sizeof(readAudio),
+	           buffer,
+	           kBytesPerFrame,
+	           &bytesReturned,
+	           NULL);
+}
+
+
+class Win32AudioCDManager : public DefaultAudioCDManager {
+public:
+	Win32AudioCDManager();
+	~Win32AudioCDManager();
+
+	bool open();
+	void close();
+	bool play(int track, int numLoops, int startFrame, int duration, bool onlyEmulate = false);
+
+protected:
+	bool openCD(int drive);
+	bool openCD(const Common::String &drive);
+
+private:
+	bool loadTOC();
+
+	typedef Common::Array<char> DriveList;
+	DriveList detectDrives();
+	bool tryAddDrive(char drive, DriveList &drives);
+
+	HANDLE _driveHandle;
+	int _firstTrack, _lastTrack;
+	Common::Array<TRACK_DATA> _tocEntries;
+};
+
+Win32AudioCDManager::Win32AudioCDManager() {
+	_driveHandle = INVALID_HANDLE_VALUE;
+	_firstTrack = _lastTrack = 0;
+}
+
+Win32AudioCDManager::~Win32AudioCDManager() {
+	close();
+}
+
+bool Win32AudioCDManager::open() {
+	close();
+
+	if (openRealCD())
+		return true;
+
+	return DefaultAudioCDManager::open();
+}
+
+bool Win32AudioCDManager::openCD(int drive) {
+	// Fetch the drive list
+	DriveList drives = detectDrives();
+	if (drive >= (int)drives.size())
+		return false;
+
+	debug(1, "Opening CD drive %c:\\", drives[drive]);
+
+	// Construct the drive path and try to open it
+	Common::String drivePath = Common::String::format("\\\\.\\%c:", drives[drive]);
+	_driveHandle = CreateFileA(drivePath.c_str(), GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, 0, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
+	if (_driveHandle == INVALID_HANDLE_VALUE) {
+		warning("Failed to open drive %c:\\, error %d", drives[drive], (int)GetLastError());
+		return false;
+	}
+
+	if (!loadTOC()) {
+		close();
+		return false;
+	}
+
+	return true;
+}
+
+bool Win32AudioCDManager::openCD(const Common::String &drive) {
+	// Just some bounds checking
+	if (drive.empty() || drive.size() > 3)
+		return false;
+
+	if (!Common::isAlpha(drive[0]) || drive[1] != ':')
+		return false;
+
+	if (drive[2] != 0 && drive[2] != '\\')
+		return false;
+
+	DriveList drives;
+	if (!tryAddDrive(toupper(drive[0]), drives))
+		return false;
+
+	// Construct the drive path and try to open it
+	Common::String drivePath = Common::String::format("\\\\.\\%c:", drives[0]);
+	_driveHandle = CreateFileA(drivePath.c_str(), GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, 0, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
+	if (_driveHandle == INVALID_HANDLE_VALUE) {
+		warning("Failed to open drive %c:\\, error %d", drives[0], (int)GetLastError());
+		return false;
+	}
+
+	if (!loadTOC()) {
+		close();
+		return false;
+	}
+
+	return true;
+}
+
+void Win32AudioCDManager::close() {
+	DefaultAudioCDManager::close();
+
+	if (_driveHandle != INVALID_HANDLE_VALUE) {
+		CloseHandle(_driveHandle);
+		_driveHandle = INVALID_HANDLE_VALUE;
+	}
+
+	_firstTrack = _lastTrack = 0;
+	_tocEntries.clear();
+}
+
+bool Win32AudioCDManager::play(int track, int numLoops, int startFrame, int duration, bool onlyEmulate) {
+	// Prefer emulation
+	if (DefaultAudioCDManager::play(track, numLoops, startFrame, duration, onlyEmulate))
+		return true;
+
+	// If we're set to only emulate, or have no CD drive, return here
+	if (onlyEmulate || _driveHandle == INVALID_HANDLE_VALUE)
+		return false;
+
+	// HACK: For now, just assume that track number is right
+	// That only works because ScummVM uses the wrong track number anyway
+
+	if (track >= (int)_tocEntries.size() - 1) {
+		warning("No such track %d", track);
+		return false;
+	}
+
+	// Bail if the track isn't an audio track
+	if ((_tocEntries[track].Control & 0x04) != 0) {
+		warning("Track %d is not audio", track);
+		return false;
+	}
+
+	// Create the AudioStream and play it
+	debug(1, "Playing CD track %d", track);
+
+	Audio::SeekableAudioStream *audioStream = new Win32AudioCDStream(_driveHandle, _tocEntries[track], _tocEntries[track + 1]);
+
+	Audio::Timestamp start = Audio::Timestamp(0, startFrame, 75);
+	Audio::Timestamp end = (duration == 0) ? audioStream->getLength() : Audio::Timestamp(0, startFrame + duration, 75);
+
+	// Fake emulation since we're really playing an AudioStream
+	_emulating = true;
+
+	_mixer->playStream(
+	    Audio::Mixer::kMusicSoundType,
+	    &_handle,
+	    Audio::makeLoopingAudioStream(audioStream, start, end, (numLoops < 1) ? numLoops + 1 : numLoops),
+	    -1,
+	    _cd.volume,
+	    _cd.balance,
+	    DisposeAfterUse::YES,
+	    true);
+	return true;
+}
+
+bool Win32AudioCDManager::loadTOC() {
+	CDROM_READ_TOC_EX tocRequest;
+	memset(&tocRequest, 0, sizeof(tocRequest));
+	tocRequest.Format = CDROM_READ_TOC_EX_FORMAT_TOC;
+	tocRequest.Msf = 1;
+	tocRequest.SessionTrack = 0;
+
+	DWORD bytesReturned;
+	CDROM_TOC tocData;
+	bool result = DeviceIoControl(
+	                  _driveHandle,
+	                  IOCTL_CDROM_READ_TOC_EX,
+	                  &tocRequest,
+	                  sizeof(tocRequest),
+	                  &tocData,
+	                  sizeof(tocData),
+	                  &bytesReturned,
+	                  NULL);
+	if (!result) {
+		debug("Failed to query the CD TOC: %d", (int)GetLastError());
+		return false;
+	}
+
+	_firstTrack = tocData.FirstTrack;
+	_lastTrack = tocData.LastTrack;
+#if 0
+	debug("First Track: %d", tocData.FirstTrack);
+	debug("Last Track: %d", tocData.LastTrack);
+#endif
+
+	for (uint32 i = 0; i < (bytesReturned - 4) / sizeof(TRACK_DATA); i++)
+		_tocEntries.push_back(tocData.TrackData[i]);
+
+#if 0
+	for (uint32 i = 0; i < _tocEntries.size(); i++) {
+		const TRACK_DATA &entry = _tocEntries[i];
+		debug("Entry:");
+		debug("\tTrack: %d", entry.TrackNumber);
+		debug("\tAdr: %d", entry.Adr);
+		debug("\tCtrl: %d", entry.Control);
+		debug("\tMSF: %d:%d:%d\n", entry.Address[1], entry.Address[2], entry.Address[3]);
+	}
+#endif
+
+	return true;
+}
+
+Win32AudioCDManager::DriveList Win32AudioCDManager::detectDrives() {
+	DriveList drives;
+
+	// Try to get the game path's drive
+	char gameDrive = 0;
+	if (ConfMan.hasKey("path")) {
+		Common::String gamePath = ConfMan.get("path");
+		char fullPath[MAX_PATH];
+		DWORD result = GetFullPathNameA(gamePath.c_str(), sizeof(fullPath), fullPath, 0);
+
+		if (result > 0 && result < sizeof(fullPath) && Common::isAlpha(fullPath[0]) && fullPath[1] == ':' && tryAddDrive(toupper(fullPath[0]), drives))
+			gameDrive = drives[0];
+	}
+
+	// Try adding the rest of the drives
+	for (char drive = 'A'; drive <= 'Z'; drive++)
+		if (drive != gameDrive)
+			tryAddDrive(drive, drives);
+
+	return drives;
+}
+
+bool Win32AudioCDManager::tryAddDrive(char drive, DriveList &drives) {
+	Common::String drivePath = Common::String::format("%c:\\", drive);
+
+	// Ensure it's an actual CD drive
+	if (GetDriveTypeA(drivePath.c_str()) != DRIVE_CDROM)
+		return false;
+
+	debug(2, "Detected drive %c:\\ as a CD drive", drive);
+	drives.push_back(drive);
+	return true;
+}
+
+AudioCDManager *createWin32AudioCDManager() {
+	return new Win32AudioCDManager();
+}
+
+#endif // WIN32
\ No newline at end of file
diff --git a/backends/audiocd/win32/win32-audiocd.h b/backends/audiocd/win32/win32-audiocd.h
new file mode 100644
index 0000000000..0c103641ef
--- /dev/null
+++ b/backends/audiocd/win32/win32-audiocd.h
@@ -0,0 +1,60 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * Original license header:
+ *
+ * Cabal - Legacy Game Implementations
+ *
+ * Cabal is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef BACKENDS_AUDIOCD_WIN32_H
+#define BACKENDS_AUDIOCD_WIN32_H
+
+#ifdef WIN32
+
+class AudioCDManager;
+
+/**
+ * Create an AudioCDManager using the Win32 API
+ */
+AudioCDManager *createWin32AudioCDManager();
+
+#endif
+
+#endif
+
diff --git a/backends/graphics/dinguxsdl/dinguxsdl-graphics.cpp b/backends/graphics/dinguxsdl/dinguxsdl-graphics.cpp
index 0b9cc0c7e8..7a248f1859 100644
--- a/backends/graphics/dinguxsdl/dinguxsdl-graphics.cpp
+++ b/backends/graphics/dinguxsdl/dinguxsdl-graphics.cpp
@@ -35,6 +35,10 @@ static const OSystem::GraphicsMode s_supportedGraphicsModes[] = {
 	{0, 0, 0}
 };
 
+#ifndef USE_SCALERS
+#define DownscaleAllByHalf 0
+#endif
+
 DINGUXSdlGraphicsManager::DINGUXSdlGraphicsManager(SdlEventSource *boss, SdlWindow *window)
 	: SurfaceSdlGraphicsManager(boss, window) {
 }
@@ -61,9 +65,11 @@ bool DINGUXSdlGraphicsManager::setGraphicsMode(int mode) {
 	case GFX_NORMAL:
 		newScaleFactor = 1;
 		break;
+#ifdef USE_SCALERS
 	case GFX_HALF:
 		newScaleFactor = 1;
 		break;
+#endif
 	default:
 		warning("unknown gfx mode %d", mode);
 		return false;
@@ -89,9 +95,11 @@ void DINGUXSdlGraphicsManager::setGraphicsModeIntern() {
 	case GFX_NORMAL:
 		newScalerProc = Normal1x;
 		break;
+#ifdef USE_SCALERS
 	case GFX_HALF:
 		newScalerProc = DownscaleAllByHalf;
 		break;
+#endif
 
 	default:
 		error("Unknown gfx mode %d", _videoMode.mode);
diff --git a/backends/graphics/opengl/context.cpp b/backends/graphics/opengl/context.cpp
new file mode 100644
index 0000000000..a7f640d37e
--- /dev/null
+++ b/backends/graphics/opengl/context.cpp
@@ -0,0 +1,182 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "backends/graphics/opengl/opengl-sys.h"
+#include "backends/graphics/opengl/opengl-graphics.h"
+#include "backends/graphics/opengl/shader.h"
+#include "backends/graphics/opengl/pipelines/pipeline.h"
+#include "backends/graphics/opengl/framebuffer.h"
+
+#include "common/tokenizer.h"
+#include "common/debug.h"
+
+namespace OpenGL {
+
+void Context::reset() {
+	maxTextureSize = 0;
+
+	NPOTSupported = false;
+	shadersSupported = false;
+	multitextureSupported = false;
+	framebufferObjectSupported = false;
+
+#define GL_FUNC_DEF(ret, name, param) name = nullptr;
+#include "backends/graphics/opengl/opengl-func.h"
+#undef GL_FUNC_DEF
+
+	activePipeline = nullptr;
+}
+
+Pipeline *Context::setPipeline(Pipeline *pipeline) {
+	Pipeline *oldPipeline = activePipeline;
+	if (oldPipeline) {
+		oldPipeline->deactivate();
+	}
+
+	activePipeline = pipeline;
+	if (activePipeline) {
+		activePipeline->activate();
+	}
+
+	return oldPipeline;
+}
+
+Context g_context;
+
+void OpenGLGraphicsManager::setContextType(ContextType type) {
+#if USE_FORCED_GL
+	type = kContextGL;
+#elif USE_FORCED_GLES
+	type = kContextGLES;
+#elif USE_FORCED_GLES2
+	type = kContextGLES2;
+#endif
+
+	g_context.type = type;
+}
+
+void OpenGLGraphicsManager::initializeGLContext() {
+	// Initialize default state.
+	g_context.reset();
+
+	// Load all functions.
+	// We use horrible trickery to silence C++ compilers.
+	// See backends/plugins/sdl/sdl-provider.cpp for more information.
+	assert(sizeof(void (*)()) == sizeof(void *));
+	void *fn = nullptr;
+
+#define LOAD_FUNC(name, loadName) \
+	fn = getProcAddress(#loadName); \
+	memcpy(&g_context.name, &fn, sizeof(fn))
+
+#define GL_EXT_FUNC_DEF(ret, name, param) LOAD_FUNC(name, name)
+
+#ifdef USE_BUILTIN_OPENGL
+#define GL_FUNC_DEF(ret, name, param) g_context.name = &name
+#define GL_FUNC_2_DEF GL_FUNC_DEF
+#else
+#define GL_FUNC_DEF GL_EXT_FUNC_DEF
+#define GL_FUNC_2_DEF(ret, name, extName, param) \
+	if (g_context.type == kContextGL) { \
+		LOAD_FUNC(name, extName); \
+	} else { \
+		LOAD_FUNC(name, name); \
+	}
+#endif
+#include "backends/graphics/opengl/opengl-func.h"
+#undef GL_FUNC_2_DEF
+#undef GL_FUNC_DEF
+#undef GL_EXT_FUNC_DEF
+#undef LOAD_FUNC
+
+	// Obtain maximum texture size.
+	GL_CALL(glGetIntegerv(GL_MAX_TEXTURE_SIZE, &g_context.maxTextureSize));
+	debug(5, "OpenGL maximum texture size: %d", g_context.maxTextureSize);
+
+	const char *extString = (const char *)g_context.glGetString(GL_EXTENSIONS);
+	debug(5, "OpenGL extensions: %s", extString);
+
+	bool ARBShaderObjects = false;
+	bool ARBShadingLanguage100 = false;
+	bool ARBVertexShader = false;
+	bool ARBFragmentShader = false;
+
+	Common::StringTokenizer tokenizer(extString, " ");
+	while (!tokenizer.empty()) {
+		Common::String token = tokenizer.nextToken();
+
+		if (token == "GL_ARB_texture_non_power_of_two" || token == "GL_OES_texture_npot") {
+			g_context.NPOTSupported = true;
+		} else if (token == "GL_ARB_shader_objects") {
+			ARBShaderObjects = true;
+		} else if (token == "GL_ARB_shading_language_100") {
+			ARBShadingLanguage100 = true;
+		} else if (token == "GL_ARB_vertex_shader") {
+			ARBVertexShader = true;
+		} else if (token == "GL_ARB_fragment_shader") {
+			ARBFragmentShader = true;
+		} else if (token == "GL_ARB_multitexture") {
+			g_context.multitextureSupported = true;
+		} else if (token == "GL_EXT_framebuffer_object") {
+			g_context.framebufferObjectSupported = true;
+		}
+	}
+
+	if (g_context.type == kContextGLES2) {
+		// GLES2 always has (limited) NPOT support.
+		g_context.NPOTSupported = true;
+
+		// GLES2 always has shader support.
+		g_context.shadersSupported = true;
+
+		// GLES2 always has multi texture support.
+		g_context.multitextureSupported = true;
+
+		// GLES2 always has FBO support.
+		g_context.framebufferObjectSupported = true;
+	} else {
+		g_context.shadersSupported = ARBShaderObjects & ARBShadingLanguage100 & ARBVertexShader & ARBFragmentShader;
+	}
+
+	// Log context type.
+	switch (g_context.type) {
+	case kContextGL:
+		debug(5, "OpenGL: GL context initialized");
+		break;
+
+	case kContextGLES:
+		debug(5, "OpenGL: GLES context initialized");
+		break;
+
+	case kContextGLES2:
+		debug(5, "OpenGL: GLES2 context initialized");
+		break;
+	}
+
+	// Log features supported by GL context.
+	debug(5, "OpenGL: NPOT texture support: %d", g_context.NPOTSupported);
+	debug(5, "OpenGL: Shader support: %d", g_context.shadersSupported);
+	debug(5, "OpenGL: Multitexture support: %d", g_context.multitextureSupported);
+	debug(5, "OpenGL: FBO support: %d", g_context.framebufferObjectSupported);
+}
+
+} // End of namespace OpenGL
diff --git a/backends/graphics/opengl/debug.cpp b/backends/graphics/opengl/debug.cpp
index d5d73fb5ec..c4319f5e36 100644
--- a/backends/graphics/opengl/debug.cpp
+++ b/backends/graphics/opengl/debug.cpp
@@ -54,7 +54,7 @@ Common::String getGLErrStr(GLenum error) {
 void checkGLError(const char *expr, const char *file, int line) {
 	GLenum error;
 
-	while ((error = glGetError()) != GL_NO_ERROR) {
+	while ((error = g_context.glGetError()) != GL_NO_ERROR) {
 		// We cannot use error here because we do not know whether we have a
 		// working screen or not.
 		warning("GL ERROR: %s on %s (%s:%d)", getGLErrStr(error).c_str(), expr, file, line);
diff --git a/backends/graphics/opengl/debug.h b/backends/graphics/opengl/debug.h
index ff6b678870..abaa6544dc 100644
--- a/backends/graphics/opengl/debug.h
+++ b/backends/graphics/opengl/debug.h
@@ -31,9 +31,9 @@ namespace OpenGL {
 void checkGLError(const char *expr, const char *file, int line);
 } // End of namespace OpenGL
 
-#define GLCALL(x) do { (x); OpenGL::checkGLError(#x, __FILE__, __LINE__); } while (false)
+#define GL_WRAP_DEBUG(call, name) do { (call); OpenGL::checkGLError(#name, __FILE__, __LINE__); } while (false)
 #else
-#define GLCALL(x) do { (x); } while (false)
+#define GL_WRAP_DEBUG(call, name) do { (call); } while (false)
 #endif
 
 #endif
diff --git a/backends/graphics/opengl/framebuffer.cpp b/backends/graphics/opengl/framebuffer.cpp
new file mode 100644
index 0000000000..7191aab8bc
--- /dev/null
+++ b/backends/graphics/opengl/framebuffer.cpp
@@ -0,0 +1,259 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "backends/graphics/opengl/framebuffer.h"
+#include "backends/graphics/opengl/texture.h"
+#include "backends/graphics/opengl/pipelines/pipeline.h"
+
+namespace OpenGL {
+
+Framebuffer::Framebuffer()
+    : _viewport(), _projectionMatrix(), _isActive(false), _clearColor(),
+      _blendState(false), _scissorTestState(false), _scissorBox() {
+}
+
+void Framebuffer::activate() {
+	_isActive = true;
+
+	applyViewport();
+	applyProjectionMatrix();
+	applyClearColor();
+	applyBlendState();
+	applyScissorTestState();
+	applyScissorBox();
+
+	activateInternal();
+}
+
+void Framebuffer::deactivate() {
+	_isActive = false;
+
+	deactivateInternal();
+}
+
+void Framebuffer::setClearColor(GLfloat r, GLfloat g, GLfloat b, GLfloat a) {
+	_clearColor[0] = r;
+	_clearColor[1] = g;
+	_clearColor[2] = b;
+	_clearColor[3] = a;
+
+	// Directly apply changes when we are active.
+	if (isActive()) {
+		applyClearColor();
+	}
+}
+
+void Framebuffer::enableBlend(bool enable) {
+	_blendState = enable;
+
+	// Directly apply changes when we are active.
+	if (isActive()) {
+		applyBlendState();
+	}
+}
+
+void Framebuffer::enableScissorTest(bool enable) {
+	_scissorTestState = enable;
+
+	// Directly apply changes when we are active.
+	if (isActive()) {
+		applyScissorTestState();
+	}
+}
+
+void Framebuffer::setScissorBox(GLint x, GLint y, GLsizei w, GLsizei h) {
+	_scissorBox[0] = x;
+	_scissorBox[1] = y;
+	_scissorBox[2] = w;
+	_scissorBox[3] = h;
+
+	// Directly apply changes when we are active.
+	if (isActive()) {
+		applyScissorBox();
+	}
+}
+
+void Framebuffer::applyViewport() {
+	GL_CALL(glViewport(_viewport[0], _viewport[1], _viewport[2], _viewport[3]));
+}
+
+void Framebuffer::applyProjectionMatrix() {
+	g_context.getActivePipeline()->setProjectionMatrix(_projectionMatrix);
+}
+
+void Framebuffer::applyClearColor() {
+	GL_CALL(glClearColor(_clearColor[0], _clearColor[1], _clearColor[2], _clearColor[3]));
+}
+
+void Framebuffer::applyBlendState() {
+	if (_blendState) {
+		GL_CALL(glEnable(GL_BLEND));
+	} else {
+		GL_CALL(glDisable(GL_BLEND));
+	}
+}
+
+void Framebuffer::applyScissorTestState() {
+	if (_scissorTestState) {
+		GL_CALL(glEnable(GL_SCISSOR_TEST));
+	} else {
+		GL_CALL(glDisable(GL_SCISSOR_TEST));
+	}
+}
+
+void Framebuffer::applyScissorBox() {
+	GL_CALL(glScissor(_scissorBox[0], _scissorBox[1], _scissorBox[2], _scissorBox[3]));
+}
+
+//
+// Backbuffer implementation
+//
+
+void Backbuffer::activateInternal() {
+#if !USE_FORCED_GLES
+	if (g_context.framebufferObjectSupported) {
+		GL_CALL(glBindFramebuffer(GL_FRAMEBUFFER, 0));
+	}
+#endif
+}
+
+void Backbuffer::setDimensions(uint width, uint height) {
+	// Set viewport dimensions.
+	_viewport[0] = 0;
+	_viewport[1] = 0;
+	_viewport[2] = width;
+	_viewport[3] = height;
+
+	// Setup orthogonal projection matrix.
+	_projectionMatrix[ 0] =  2.0f / width;
+	_projectionMatrix[ 1] =  0.0f;
+	_projectionMatrix[ 2] =  0.0f;
+	_projectionMatrix[ 3] =  0.0f;
+
+	_projectionMatrix[ 4] =  0.0f;
+	_projectionMatrix[ 5] = -2.0f / height;
+	_projectionMatrix[ 6] =  0.0f;
+	_projectionMatrix[ 7] =  0.0f;
+
+	_projectionMatrix[ 8] =  0.0f;
+	_projectionMatrix[ 9] =  0.0f;
+	_projectionMatrix[10] =  0.0f;
+	_projectionMatrix[11] =  0.0f;
+
+	_projectionMatrix[12] = -1.0f;
+	_projectionMatrix[13] =  1.0f;
+	_projectionMatrix[14] =  0.0f;
+	_projectionMatrix[15] =  1.0f;
+
+	// Directly apply changes when we are active.
+	if (isActive()) {
+		applyViewport();
+		applyProjectionMatrix();
+	}
+}
+
+//
+// Render to texture target implementation
+//
+
+#if !USE_FORCED_GLES
+TextureTarget::TextureTarget()
+    : _texture(new GLTexture(GL_RGBA, GL_RGBA, GL_UNSIGNED_BYTE)), _glFBO(0), _needUpdate(true) {
+}
+
+TextureTarget::~TextureTarget() {
+	delete _texture;
+	GL_CALL_SAFE(glDeleteFramebuffers, (1, &_glFBO));
+}
+
+void TextureTarget::activateInternal() {
+	// Allocate framebuffer object if necessary.
+	if (!_glFBO) {
+		GL_CALL(glGenFramebuffers(1, &_glFBO));
+		_needUpdate = true;
+	}
+
+	// Attach destination texture to FBO.
+	GL_CALL(glBindFramebuffer(GL_FRAMEBUFFER, _glFBO));
+
+	// If required attach texture to FBO.
+	if (_needUpdate) {
+		GL_CALL(glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, _texture->getGLTexture(), 0));
+		_needUpdate = false;
+	}
+}
+
+void TextureTarget::destroy() {
+	GL_CALL(glDeleteFramebuffers(1, &_glFBO));
+	_glFBO = 0;
+
+	_texture->destroy();
+}
+
+void TextureTarget::create() {
+	_texture->create();
+
+	_needUpdate = true;
+}
+
+void TextureTarget::setSize(uint width, uint height) {
+	_texture->setSize(width, height);
+
+	const uint texWidth  = _texture->getWidth();
+	const uint texHeight = _texture->getHeight();
+
+	// Set viewport dimensions.
+	_viewport[0] = 0;
+	_viewport[1] = 0;
+	_viewport[2] = texWidth;
+	_viewport[3] = texHeight;
+
+	// Setup orthogonal projection matrix.
+	_projectionMatrix[ 0] =  2.0f / texWidth;
+	_projectionMatrix[ 1] =  0.0f;
+	_projectionMatrix[ 2] =  0.0f;
+	_projectionMatrix[ 3] =  0.0f;
+
+	_projectionMatrix[ 4] =  0.0f;
+	_projectionMatrix[ 5] =  2.0f / texHeight;
+	_projectionMatrix[ 6] =  0.0f;
+	_projectionMatrix[ 7] =  0.0f;
+
+	_projectionMatrix[ 8] =  0.0f;
+	_projectionMatrix[ 9] =  0.0f;
+	_projectionMatrix[10] =  0.0f;
+	_projectionMatrix[11] =  0.0f;
+
+	_projectionMatrix[12] = -1.0f;
+	_projectionMatrix[13] = -1.0f;
+	_projectionMatrix[14] =  0.0f;
+	_projectionMatrix[15] =  1.0f;
+
+	// Directly apply changes when we are active.
+	if (isActive()) {
+		applyViewport();
+		applyProjectionMatrix();
+	}
+}
+#endif // !USE_FORCED_GLES
+
+} // End of namespace OpenGL
diff --git a/backends/graphics/opengl/framebuffer.h b/backends/graphics/opengl/framebuffer.h
new file mode 100644
index 0000000000..c44c98ddc4
--- /dev/null
+++ b/backends/graphics/opengl/framebuffer.h
@@ -0,0 +1,175 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef BACKENDS_GRAPHICS_OPENGL_FRAMEBUFFER_H
+#define BACKENDS_GRAPHICS_OPENGL_FRAMEBUFFER_H
+
+#include "backends/graphics/opengl/opengl-sys.h"
+
+namespace OpenGL {
+
+/**
+ * Object describing a framebuffer OpenGL can render to.
+ */
+class Framebuffer {
+	friend class Pipeline;
+public:
+	Framebuffer();
+	virtual ~Framebuffer() {};
+
+public:
+	/**
+	 * Set the clear color of the framebuffer.
+	 */
+	void setClearColor(GLfloat r, GLfloat g, GLfloat b, GLfloat a);
+
+	/**
+	 * Enable/disable GL_BLEND.
+	 */
+	void enableBlend(bool enable);
+
+	/**
+	 * Enable/disable GL_SCISSOR_TEST.
+	 */
+	void enableScissorTest(bool enable);
+
+	/**
+	 * Set scissor box dimensions.
+	 */
+	void setScissorBox(GLint x, GLint y, GLsizei w, GLsizei h);
+
+	/**
+	 * Obtain projection matrix of the framebuffer.
+	 */
+	const GLfloat *getProjectionMatrix() const { return _projectionMatrix; }
+protected:
+	bool isActive() const { return _isActive; }
+
+	GLint _viewport[4];
+	void applyViewport();
+
+	GLfloat _projectionMatrix[4*4];
+	void applyProjectionMatrix();
+
+	/**
+	 * Activate framebuffer.
+	 *
+	 * This is supposed to set all state associated with the framebuffer.
+	 */
+	virtual void activateInternal() = 0;
+
+	/**
+	 * Deactivate framebuffer.
+	 *
+	 * This is supposed to make any cleanup required when unbinding the
+	 * framebuffer.
+	 */
+	virtual void deactivateInternal() {}
+
+private:
+	/**
+	 * Accessor to activate framebuffer for pipeline.
+	 */
+	void activate();
+
+	/**
+	 * Accessor to deactivate framebuffer from pipeline.
+	 */
+	void deactivate();
+
+private:
+	bool _isActive;
+
+	GLfloat _clearColor[4];
+	void applyClearColor();
+
+	bool _blendState;
+	void applyBlendState();
+
+	bool _scissorTestState;
+	void applyScissorTestState();
+
+	GLint _scissorBox[4];
+	void applyScissorBox();
+};
+
+/**
+ * Default back buffer implementation.
+ */
+class Backbuffer : public Framebuffer {
+public:
+	/**
+	 * Set the dimensions (a.k.a. size) of the back buffer.
+	 */
+	void setDimensions(uint width, uint height);
+
+protected:
+	virtual void activateInternal();
+};
+
+#if !USE_FORCED_GLES
+class GLTexture;
+
+/**
+ * Render to texture framebuffer implementation.
+ *
+ * This target allows to render to a texture, which can then be used for
+ * further rendering.
+ */
+class TextureTarget : public Framebuffer {
+public:
+	TextureTarget();
+	virtual ~TextureTarget();
+
+	/**
+	 * Notify that the GL context is about to be destroyed.
+	 */
+	void destroy();
+
+	/**
+	 * Notify that the GL context has been created.
+	 */
+	void create();
+
+	/**
+	 * Set size of the texture target.
+	 */
+	void setSize(uint width, uint height);
+
+	/**
+	 * Query pointer to underlying GL texture.
+	 */
+	GLTexture *getTexture() const { return _texture; }
+
+protected:
+	virtual void activateInternal();
+
+private:
+	GLTexture *_texture;
+	GLuint _glFBO;
+	bool _needUpdate;
+};
+#endif
+
+} // End of namespace OpenGL
+
+#endif
diff --git a/backends/graphics/opengl/opengl-defs.h b/backends/graphics/opengl/opengl-defs.h
new file mode 100644
index 0000000000..733fc2933c
--- /dev/null
+++ b/backends/graphics/opengl/opengl-defs.h
@@ -0,0 +1,262 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+/* This file is based on Mesa 3-D's gl.h and GLES/gl.h from Khronos Registry.
+ *
+ * Mesa 3-D's gl.h file is distributed under the following license:
+ * Mesa 3-D graphics library
+ *
+ * Copyright (C) 1999-2006  Brian Paul   All Rights Reserved.
+ * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ *
+ * GLES/gl.h from Khronos Registry is distributed under the following license:
+ * This document is licensed under the SGI Free Software B License Version
+ * 2.0. For details, see http://oss.sgi.com/projects/FreeB/ .
+ */
+
+#ifndef BACKENDS_GRAPHICS_OPENGL_OPENGL_DEFS_H
+#define BACKENDS_GRAPHICS_OPENGL_OPENGL_DEFS_H
+
+#include "common/scummsys.h"
+
+/*
+ * Datatypes
+ */
+typedef uint   GLenum;
+typedef uint8  GLboolean;
+typedef uint   GLbitfield;
+typedef void   GLvoid;
+typedef int8   GLbyte;   /* 1-byte signed */
+typedef int16  GLshort;  /* 2-byte signed */
+typedef int32  GLint;    /* 4-byte signed */
+typedef uint8  GLubyte;  /* 1-byte unsigned */
+typedef uint16 GLushort; /* 2-byte unsigned */
+typedef uint32 GLuint;   /* 4-byte unsigned */
+typedef int32  GLsizei;  /* 4-byte signed */
+typedef float  GLfloat;  /* single precision float */
+typedef float  GLclampf; /* single precision float in [0,1] */
+typedef double GLdouble; /* double precision float */
+typedef double GLclampd; /* double precision float in [0,1] */
+typedef char   GLchar;
+#if defined(MACOSX)
+typedef void  *GLhandleARB;
+#else
+typedef uint   GLhandleARB;
+#endif
+
+// This is an addition from us to alias ARB shader object extensions to
+// OpenGL (ES) 2.0 style functions. It only works when GLhandleARB and GLuint
+// are type compatible.
+typedef GLhandleARB GLprogram;
+typedef GLhandleARB GLshader;
+
+/*
+ * Constants
+ */
+
+/* Boolean constants */
+#define GL_FALSE                          0
+#define GL_TRUE                           1
+
+/* StringName */
+#define GL_VENDOR                         0x1F00
+#define GL_RENDERER                       0x1F01
+#define GL_VERSION                        0x1F02
+#define GL_EXTENSIONS                     0x1F03
+
+/* ErrorCode */
+#define GL_NO_ERROR                       0
+#define GL_INVALID_ENUM                   0x0500
+#define GL_INVALID_VALUE                  0x0501
+#define GL_INVALID_OPERATION              0x0502
+#define GL_STACK_OVERFLOW                 0x0503
+#define GL_STACK_UNDERFLOW                0x0504
+#define GL_OUT_OF_MEMORY                  0x0505
+
+/* ClearBufferMask */
+#define GL_DEPTH_BUFFER_BIT               0x00000100
+#define GL_STENCIL_BUFFER_BIT             0x00000400
+#define GL_COLOR_BUFFER_BIT               0x00004000
+
+/* Scissor box */
+#define GL_SCISSOR_BOX                    0x0C10
+#define GL_SCISSOR_TEST                   0x0C11
+
+/* MatrixMode */
+#define GL_MATRIX_MODE                    0x0BA0
+#define GL_MODELVIEW                      0x1700
+#define GL_PROJECTION                     0x1701
+#define GL_TEXTURE                        0x1702
+
+/* EnableCap */
+#define GL_FOG                            0x0B60
+#define GL_LIGHTING                       0x0B50
+#define GL_TEXTURE_2D                     0x0DE1
+#define GL_CULL_FACE                      0x0B44
+#define GL_ALPHA_TEST                     0x0BC0
+#define GL_BLEND                          0x0BE2
+#define GL_DITHER                         0x0BD0
+#define GL_DEPTH_TEST                     0x0B71
+#define GL_VERTEX_ARRAY                   0x8074
+#define GL_COLOR_ARRAY                    0x8076
+#define GL_TEXTURE_COORD_ARRAY            0x8078
+
+/* ShadingModel */
+#define GL_FLAT                           0x1D00
+#define GL_SMOOTH                         0x1D01
+
+/* HintMode */
+#define GL_DONT_CARE                      0x1100
+#define GL_FASTEST                        0x1101
+#define GL_NICEST                         0x1102
+
+/* HintTarget */
+#define GL_PERSPECTIVE_CORRECTION_HINT    0x0C50
+#define GL_POINT_SMOOTH_HINT              0x0C51
+#define GL_LINE_SMOOTH_HINT               0x0C52
+#define GL_FOG_HINT                       0x0C54
+#define GL_GENERATE_MIPMAP_HINT           0x8192
+
+/* BlendingFactorDest */
+#define GL_ZERO                           0
+#define GL_ONE                            1
+#define GL_SRC_COLOR                      0x0300
+#define GL_ONE_MINUS_SRC_COLOR            0x0301
+#define GL_SRC_ALPHA                      0x0302
+#define GL_ONE_MINUS_SRC_ALPHA            0x0303
+#define GL_DST_ALPHA                      0x0304
+#define GL_ONE_MINUS_DST_ALPHA            0x0305
+
+/* BlendingFactorSrc */
+/*      GL_ZERO */
+/*      GL_ONE */
+#define GL_DST_COLOR                      0x0306
+#define GL_ONE_MINUS_DST_COLOR            0x0307
+#define GL_SRC_ALPHA_SATURATE             0x0308
+/*      GL_SRC_ALPHA */
+/*      GL_ONE_MINUS_SRC_ALPHA */
+/*      GL_DST_ALPHA */
+/*      GL_ONE_MINUS_DST_ALPHA */
+
+/* PixelFormat */
+#define GL_ALPHA                          0x1906
+#define GL_RGB                            0x1907
+#define GL_RGBA                           0x1908
+#define GL_BGR                            0x80E0
+#define GL_BGRA                           0x80E1
+
+#define GL_RED                            0x1903
+#define GL_R8                             0x8229
+
+/* PixelStoreParameter */
+#define GL_UNPACK_ALIGNMENT               0x0CF5
+#define GL_PACK_ALIGNMENT                 0x0D05
+
+/* DataType */
+#define GL_BYTE                           0x1400
+#define GL_UNSIGNED_BYTE                  0x1401
+#define GL_SHORT                          0x1402
+#define GL_UNSIGNED_SHORT                 0x1403
+#define GL_FLOAT                          0x1406
+#define GL_FIXED                          0x140C
+
+/* PixelType */
+/*      GL_UNSIGNED_BYTE */
+#define GL_UNSIGNED_SHORT_4_4_4_4         0x8033
+#define GL_UNSIGNED_SHORT_5_5_5_1         0x8034
+#define GL_UNSIGNED_SHORT_5_6_5           0x8363
+
+#define GL_UNSIGNED_SHORT_4_4_4_4_REV     0x8365
+#define GL_UNSIGNED_SHORT_5_6_5_REV       0x8364
+#define GL_UNSIGNED_SHORT_1_5_5_5_REV     0x8366
+#define GL_UNSIGNED_INT_8_8_8_8           0x8035
+#define GL_UNSIGNED_INT_8_8_8_8_REV       0x8367
+
+/* Implementation limits */
+#define GL_MAX_TEXTURE_SIZE               0x0D33
+
+/* TextureMagFilter */
+#define GL_NEAREST                        0x2600
+#define GL_LINEAR                         0x2601
+
+/* TextureParameterName */
+#define GL_TEXTURE_MAG_FILTER             0x2800
+#define GL_TEXTURE_MIN_FILTER             0x2801
+#define GL_TEXTURE_WRAP_S                 0x2802
+#define GL_TEXTURE_WRAP_T                 0x2803
+
+/* TextureWrapMode */
+#define GL_REPEAT                         0x2901
+#define GL_CLAMP_TO_EDGE                  0x812F
+
+/* BeginMode */
+#define GL_POINTS                         0x0000
+#define GL_LINES                          0x0001
+#define GL_LINE_LOOP                      0x0002
+#define GL_LINE_STRIP                     0x0003
+#define GL_TRIANGLES                      0x0004
+#define GL_TRIANGLE_STRIP                 0x0005
+#define GL_TRIANGLE_FAN                   0x0006
+
+/* Shaders */
+#define GL_FRAGMENT_SHADER                0x8B30
+
+#define GL_VERTEX_SHADER                  0x8B31
+
+/* Programs */
+#define GL_COMPILE_STATUS                 0x8B81
+#define GL_LINK_STATUS                    0x8B82
+#define GL_INFO_LOG_LENGTH                0x8B84
+#define GL_CURRENT_PROGRAM                0x8B8D
+
+/* Textures */
+#define GL_TEXTURE0                       0x84C0
+#define GL_TEXTURE1                       0x84C1
+
+/* GetPName */
+#define GL_VIEWPORT                       0x0BA2
+#define GL_FRAMEBUFFER_BINDING            0x8CA6
+
+/* Framebuffer objects */
+#define GL_COLOR_ATTACHMENT0              0x8CE0
+#define GL_FRAMEBUFFER                    0x8D40
+
+#endif
diff --git a/backends/graphics/opengl/opengl-func.h b/backends/graphics/opengl/opengl-func.h
new file mode 100644
index 0000000000..4e44c13d0f
--- /dev/null
+++ b/backends/graphics/opengl/opengl-func.h
@@ -0,0 +1,153 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+/* This file is based on Mesa 3-D's gl.h and GLES/gl.h from Khronos Registry.
+ *
+ * Mesa 3-D's gl.h file is distributed under the following license:
+ * Mesa 3-D graphics library
+ *
+ * Copyright (C) 1999-2006  Brian Paul   All Rights Reserved.
+ * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ *
+ * GLES/gl.h from Khronos Registry is distributed under the following license:
+ * This document is licensed under the SGI Free Software B License Version
+ * 2.0. For details, see http://oss.sgi.com/projects/FreeB/ .
+ */
+
+/*
+ * This file is a template file to be used inside specific locations in the
+ * OpenGL graphics code. It is not to be included otherwise. It intentionally
+ * does not contain include guards because it can be required to include it
+ * multiple times in a source file.
+ *
+ * Functions are defined by three different user supplied macros:
+ * GL_FUNC_DEF:     Define a (builtin) OpenGL (ES) function.
+ * GL_FUNC_2_DEF:   Define a OpenGL (ES) 2.0 function which can be provided by
+ *                  extensions in OpenGL 1.x contexts.
+ * GL_EXT_FUNC_DEF: Define an OpenGL (ES) extension function.
+ */
+
+#if !defined(GL_FUNC_2_DEF)
+#define GL_FUNC_2_DEF(ret, name, extName, param) GL_FUNC_DEF(ret, name, param)
+#define DEFINED_GL_FUNC_2_DEF
+#endif
+
+#if !defined(GL_EXT_FUNC_DEF)
+#define GL_EXT_FUNC_DEF(ret, name, param) GL_FUNC_DEF(ret, name, param)
+#define DEFINED_GL_EXT_FUNC_DEF
+#endif
+
+GL_FUNC_DEF(void, glEnable, (GLenum cap));
+GL_FUNC_DEF(void, glDisable, (GLenum cap));
+GL_FUNC_DEF(GLboolean, glIsEnabled, (GLenum cap));
+GL_FUNC_DEF(void, glClear, (GLbitfield mask));
+GL_FUNC_DEF(void, glColor4f, (GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha));
+GL_FUNC_DEF(void, glViewport, (GLint x, GLint y, GLsizei width, GLsizei height));
+GL_FUNC_DEF(void, glMatrixMode, (GLenum mode));
+GL_FUNC_DEF(void, glLoadIdentity, ());
+GL_FUNC_DEF(void, glLoadMatrixf, (const GLfloat *m));
+GL_FUNC_DEF(void, glShadeModel, (GLenum mode));
+GL_FUNC_DEF(void, glHint, (GLenum target, GLenum mode));
+GL_FUNC_DEF(void, glClearColor, (GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha));
+GL_FUNC_DEF(void, glBlendFunc, (GLenum sfactor, GLenum dfactor));
+GL_FUNC_DEF(void, glEnableClientState, (GLenum array));
+GL_FUNC_DEF(void, glPixelStorei, (GLenum pname, GLint param));
+GL_FUNC_DEF(void, glScissor, (GLint x, GLint y, GLsizei width, GLsizei height));
+GL_FUNC_DEF(void, glReadPixels, (GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, GLvoid *pixels));
+GL_FUNC_DEF(void, glGetIntegerv, (GLenum pname, GLint *params));
+GL_FUNC_DEF(void, glDeleteTextures, (GLsizei n, const GLuint *textures));
+GL_FUNC_DEF(void, glGenTextures, (GLsizei n, GLuint *textures));
+GL_FUNC_DEF(void, glBindTexture, (GLenum target, GLuint texture));
+GL_FUNC_DEF(void, glTexParameteri, (GLenum target, GLenum pname, GLint param));
+GL_FUNC_DEF(void, glTexImage2D, (GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const GLvoid *pixels));
+GL_FUNC_DEF(void, glTexCoordPointer, (GLint size, GLenum type, GLsizei stride, const GLvoid *pointer));
+GL_FUNC_DEF(void, glVertexPointer, (GLint size, GLenum type, GLsizei stride, const GLvoid *pointer));
+GL_FUNC_DEF(void, glDrawArrays, (GLenum mode, GLint first, GLsizei count));
+GL_FUNC_DEF(void, glTexSubImage2D, (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, const GLvoid *pixels));
+GL_FUNC_DEF(const GLubyte *, glGetString, (GLenum name));
+GL_FUNC_DEF(GLenum, glGetError, ());
+
+#if !USE_FORCED_GLES
+GL_FUNC_2_DEF(void, glEnableVertexAttribArray, glEnableVertexAttribArrayARB, (GLuint index));
+GL_FUNC_2_DEF(void, glDisableVertexAttribArray, glDisableVertexAttribArrayARB, (GLuint index));
+GL_FUNC_2_DEF(void, glUniform1i, glUniform1iARB, (GLint location, GLint v0));
+GL_FUNC_2_DEF(void, glUniform1f, glUniform1fARB, (GLint location, GLfloat v0));
+GL_FUNC_2_DEF(void, glUniformMatrix4fv, glUniformMatrix4fvARB, (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value));
+GL_FUNC_2_DEF(void, glVertexAttrib4f, glVertexAttrib4fARB, (GLuint index, GLfloat x, GLfloat y, GLfloat z, GLfloat w));
+GL_FUNC_2_DEF(void, glVertexAttribPointer, glVertexAttribPointerARB, (GLuint index, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const void *pointer));
+
+GL_FUNC_2_DEF(GLprogram, glCreateProgram, glCreateProgramObjectARB, ());
+GL_FUNC_2_DEF(void, glDeleteProgram, glDeleteObjectARB, (GLprogram program));
+GL_FUNC_2_DEF(void, glAttachShader, glAttachObjectARB, (GLprogram program, GLshader shader));
+GL_FUNC_2_DEF(void, glDetachShader, glDetachObjectARB, (GLprogram program, GLshader shader));
+GL_FUNC_2_DEF(void, glLinkProgram, glLinkProgramARB, (GLprogram program));
+GL_FUNC_2_DEF(void, glUseProgram, glUseProgramObjectARB, (GLprogram program));
+GL_FUNC_2_DEF(void, glGetProgramiv, glGetObjectParameterivARB, (GLprogram program, GLenum pname, GLint *params));
+GL_FUNC_2_DEF(void, glGetProgramInfoLog, glGetInfoLogARB, (GLprogram program, GLsizei bufSize, GLsizei *length, GLchar *infoLog));
+GL_FUNC_2_DEF(void, glBindAttribLocation, glBindAttribLocationARB, (GLprogram program, GLuint index, const GLchar *name));
+GL_FUNC_2_DEF(GLint, glGetAttribLocation, glGetAttribLocationARB, (GLprogram program, const GLchar *name));
+GL_FUNC_2_DEF(GLint, glGetUniformLocation, glGetUniformLocationARB, (GLprogram program, const GLchar *name));
+
+GL_FUNC_2_DEF(GLshader, glCreateShader, glCreateShaderObjectARB, (GLenum type));
+GL_FUNC_2_DEF(void, glDeleteShader, glDeleteObjectARB, (GLshader shader));
+GL_FUNC_2_DEF(void, glGetShaderiv, glGetObjectParameterivARB, (GLshader shader, GLenum pname, GLint *params));
+GL_FUNC_2_DEF(void, glGetShaderInfoLog, glGetInfoLogARB, (GLshader shader, GLsizei bufSize, GLsizei *length, GLchar *infoLog));
+GL_FUNC_2_DEF(void, glShaderSource, glShaderSourceARB, (GLshader shader, GLsizei count, const GLchar *const *string, const GLint *length));
+GL_FUNC_2_DEF(void, glCompileShader, glCompileShaderARB, (GLshader shader));
+
+GL_FUNC_2_DEF(void, glBindFramebuffer, glBindFramebufferEXT, (GLenum target, GLuint renderbuffer));
+GL_FUNC_2_DEF(void, glDeleteFramebuffers, glDeleteFramebuffersEXT, (GLsizei n, const GLuint *framebuffers));
+GL_FUNC_2_DEF(void, glGenFramebuffers, glGenFramebuffersEXT, (GLsizei n, GLuint *renderbuffers));
+GL_FUNC_2_DEF(void, glFramebufferTexture2D, glFramebufferTexture2DEXT, (GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level));
+GL_FUNC_2_DEF(GLenum, glCheckFramebufferStatus, glCheckFramebufferStatusEXT, (GLenum target));
+
+GL_FUNC_2_DEF(void, glActiveTexture, glActiveTextureARB, (GLenum texture));
+#endif
+
+#ifdef DEFINED_GL_EXT_FUNC_DEF
+#undef DEFINED_GL_EXT_FUNC_DEF
+#undef GL_EXT_FUNC_DEF
+#endif
+
+#ifdef DEFINED_GL_FUNC_2_DEF
+#undef DEFINED_GL_FUNC_2_DEF
+#undef GL_FUNC_2_DEF
+#endif
diff --git a/backends/graphics/opengl/opengl-graphics.cpp b/backends/graphics/opengl/opengl-graphics.cpp
index ac6d41d47d..4d6a00a3b3 100644
--- a/backends/graphics/opengl/opengl-graphics.cpp
+++ b/backends/graphics/opengl/opengl-graphics.cpp
@@ -23,8 +23,10 @@
 
 #include "backends/graphics/opengl/opengl-graphics.h"
 #include "backends/graphics/opengl/texture.h"
-#include "backends/graphics/opengl/debug.h"
-#include "backends/graphics/opengl/extensions.h"
+#include "backends/graphics/opengl/pipelines/pipeline.h"
+#include "backends/graphics/opengl/pipelines/fixed.h"
+#include "backends/graphics/opengl/pipelines/shader.h"
+#include "backends/graphics/opengl/shader.h"
 
 #include "common/textconsole.h"
 #include "common/translation.h"
@@ -45,6 +47,7 @@ namespace OpenGL {
 
 OpenGLGraphicsManager::OpenGLGraphicsManager()
     : _currentState(), _oldState(), _transactionMode(kTransactionNone), _screenChangeID(1 << (sizeof(int) * 8 - 2)),
+      _pipeline(nullptr),
       _outputScreenWidth(0), _outputScreenHeight(0), _displayX(0), _displayY(0),
       _displayWidth(0), _displayHeight(0), _defaultFormat(), _defaultFormatAlpha(),
       _gameScreen(nullptr), _gameScreenShakeOffset(0), _overlay(nullptr),
@@ -58,6 +61,7 @@ OpenGLGraphicsManager::OpenGLGraphicsManager()
 #endif
     {
 	memset(_gamePalette, 0, sizeof(_gamePalette));
+	g_context.reset();
 }
 
 OpenGLGraphicsManager::~OpenGLGraphicsManager() {
@@ -67,6 +71,9 @@ OpenGLGraphicsManager::~OpenGLGraphicsManager() {
 #ifdef USE_OSD
 	delete _osd;
 #endif
+#if !USE_FORCED_GLES
+	ShaderManager::destroy();
+#endif
 }
 
 bool OpenGLGraphicsManager::hasFeature(OSystem::Feature f) {
@@ -215,8 +222,8 @@ OSystem::TransactionError OpenGLGraphicsManager::endGFXTransaction() {
 		   // a context existing before, which means we don't know the maximum
 		   // supported texture size before this. Thus, we check whether the
 		   // requested game resolution is supported over here.
-		   || (   _currentState.gameWidth  > (uint)Texture::getMaximumTextureSize()
-		       || _currentState.gameHeight > (uint)Texture::getMaximumTextureSize())) {
+		   || (   _currentState.gameWidth  > (uint)g_context.maxTextureSize
+		       || _currentState.gameHeight > (uint)g_context.maxTextureSize)) {
 			if (_transactionMode == kTransactionActive) {
 				// Try to setup the old state in case its valid and is
 				// actually different from the new one.
@@ -267,9 +274,9 @@ OSystem::TransactionError OpenGLGraphicsManager::endGFXTransaction() {
 		_gameScreen = nullptr;
 
 #ifdef USE_RGB_COLOR
-		_gameScreen = createTexture(_currentState.gameFormat);
+		_gameScreen = createSurface(_currentState.gameFormat);
 #else
-		_gameScreen = createTexture(Graphics::PixelFormat::createFormatCLUT8());
+		_gameScreen = createSurface(Graphics::PixelFormat::createFormatCLUT8());
 #endif
 		assert(_gameScreen);
 		if (_gameScreen->hasPalette()) {
@@ -365,29 +372,37 @@ void OpenGLGraphicsManager::updateScreen() {
 	}
 	_forceRedraw = false;
 
+	// Update changes to textures.
+	_gameScreen->updateGLTexture();
+	if (_cursor) {
+		_cursor->updateGLTexture();
+	}
+	_overlay->updateGLTexture();
+	_osd->updateGLTexture();
+
 	// Clear the screen buffer.
 	if (_scissorOverride && !_overlayVisible) {
 		// In certain cases we need to assure that the whole screen area is
 		// cleared. For example, when switching from overlay visible to
 		// invisible, we need to assure that all contents are cleared to
 		// properly remove all overlay contents.
-		GLCALL(glDisable(GL_SCISSOR_TEST));
-		GLCALL(glClear(GL_COLOR_BUFFER_BIT));
-		GLCALL(glEnable(GL_SCISSOR_TEST));
+		_backBuffer.enableScissorTest(false);
+		GL_CALL(glClear(GL_COLOR_BUFFER_BIT));
+		_backBuffer.enableScissorTest(true);
 
 		--_scissorOverride;
 	} else {
-		GLCALL(glClear(GL_COLOR_BUFFER_BIT));
+		GL_CALL(glClear(GL_COLOR_BUFFER_BIT));
 	}
 
 	const GLfloat shakeOffset = _gameScreenShakeOffset * (GLfloat)_displayHeight / _gameScreen->getHeight();
 
 	// First step: Draw the (virtual) game screen.
-	_gameScreen->draw(_displayX, _displayY + shakeOffset, _displayWidth, _displayHeight);
+	g_context.getActivePipeline()->drawTexture(_gameScreen->getGLTexture(), _displayX, _displayY + shakeOffset, _displayWidth, _displayHeight);
 
 	// Second step: Draw the overlay if visible.
 	if (_overlayVisible) {
-		_overlay->draw(0, 0, _outputScreenWidth, _outputScreenHeight);
+		g_context.getActivePipeline()->drawTexture(_overlay->getGLTexture(), 0, 0, _outputScreenWidth, _outputScreenHeight);
 	}
 
 	// Third step: Draw the cursor if visible.
@@ -396,9 +411,10 @@ void OpenGLGraphicsManager::updateScreen() {
 		// visible.
 		const GLfloat cursorOffset = _overlayVisible ? 0 : shakeOffset;
 
-		_cursor->draw(_cursorDisplayX - _cursorHotspotXScaled,
-		              _cursorDisplayY - _cursorHotspotYScaled + cursorOffset,
-		              _cursorWidthScaled, _cursorHeightScaled);
+		g_context.getActivePipeline()->drawTexture(_cursor->getGLTexture(),
+		                         _cursorDisplayX - _cursorHotspotXScaled,
+		                         _cursorDisplayY - _cursorHotspotYScaled + cursorOffset,
+		                         _cursorWidthScaled, _cursorHeightScaled);
 	}
 
 #ifdef USE_OSD
@@ -419,13 +435,13 @@ void OpenGLGraphicsManager::updateScreen() {
 		}
 
 		// Set the OSD transparency.
-		GLCALL(glColor4f(1.0f, 1.0f, 1.0f, _osdAlpha / 100.0f));
+		g_context.getActivePipeline()->setColor(1.0f, 1.0f, 1.0f, _osdAlpha / 100.0f);
 
 		// Draw the OSD texture.
-		_osd->draw(0, 0, _outputScreenWidth, _outputScreenHeight);
+		g_context.getActivePipeline()->drawTexture(_osd->getGLTexture(), 0, 0, _outputScreenWidth, _outputScreenHeight);
 
 		// Reset color.
-		GLCALL(glColor4f(1.0f, 1.0f, 1.0f, 1.0f));
+		g_context.getActivePipeline()->setColor(1.0f, 1.0f, 1.0f, 1.0f);
 	}
 #endif
 
@@ -467,7 +483,7 @@ void OpenGLGraphicsManager::showOverlay() {
 	_forceRedraw = true;
 
 	// Allow drawing inside full screen area.
-	GLCALL(glDisable(GL_SCISSOR_TEST));
+	_backBuffer.enableScissorTest(false);
 
 	// Update cursor position.
 	setMousePosition(_cursorX, _cursorY);
@@ -478,7 +494,7 @@ void OpenGLGraphicsManager::hideOverlay() {
 	_forceRedraw = true;
 
 	// Limit drawing to screen area.
-	GLCALL(glEnable(GL_SCISSOR_TEST));
+	_backBuffer.enableScissorTest(true);
 	_scissorOverride = 3;
 
 	// Update cursor position.
@@ -609,7 +625,7 @@ void OpenGLGraphicsManager::setMouseCursor(const void *buf, uint w, uint h, int
 		} else {
 			textureFormat = _defaultFormatAlpha;
 		}
-		_cursor = createTexture(textureFormat, true);
+		_cursor = createSurface(textureFormat, true);
 		assert(_cursor);
 		_cursor->enableLinearFiltering(_currentState.graphicsMode == GFX_LINEAR);
 	}
@@ -755,18 +771,8 @@ void OpenGLGraphicsManager::setActualScreenSize(uint width, uint height) {
 	_outputScreenWidth = width;
 	_outputScreenHeight = height;
 
-	// Setup coordinates system.
-	GLCALL(glViewport(0, 0, _outputScreenWidth, _outputScreenHeight));
-
-	GLCALL(glMatrixMode(GL_PROJECTION));
-	GLCALL(glLoadIdentity());
-#ifdef USE_GLES
-	GLCALL(glOrthof(0, _outputScreenWidth, _outputScreenHeight, 0, -1, 1));
-#else
-	GLCALL(glOrtho(0, _outputScreenWidth, _outputScreenHeight, 0, -1, 1));
-#endif
-	GLCALL(glMatrixMode(GL_MODELVIEW));
-	GLCALL(glLoadIdentity());
+	// Setup backbuffer size.
+	_backBuffer.setDimensions(width, height);
 
 	uint overlayWidth = width;
 	uint overlayHeight = height;
@@ -777,15 +783,15 @@ void OpenGLGraphicsManager::setActualScreenSize(uint width, uint height) {
 	// possible and then scale it to the physical display size. This sounds
 	// bad but actually all recent chips should support full HD resolution
 	// anyway. Thus, it should not be a real issue for modern hardware.
-	if (   overlayWidth  > (uint)Texture::getMaximumTextureSize()
-	    || overlayHeight > (uint)Texture::getMaximumTextureSize()) {
+	if (   overlayWidth  > (uint)g_context.maxTextureSize
+	    || overlayHeight > (uint)g_context.maxTextureSize) {
 		const frac_t outputAspect = intToFrac(_outputScreenWidth) / _outputScreenHeight;
 
 		if (outputAspect > (frac_t)FRAC_ONE) {
-			overlayWidth  = Texture::getMaximumTextureSize();
+			overlayWidth  = g_context.maxTextureSize;
 			overlayHeight = intToFrac(overlayWidth) / outputAspect;
 		} else {
-			overlayHeight = Texture::getMaximumTextureSize();
+			overlayHeight = g_context.maxTextureSize;
 			overlayWidth  = fracToInt(overlayHeight * outputAspect);
 		}
 	}
@@ -801,7 +807,7 @@ void OpenGLGraphicsManager::setActualScreenSize(uint width, uint height) {
 		delete _overlay;
 		_overlay = nullptr;
 
-		_overlay = createTexture(_defaultFormatAlpha);
+		_overlay = createSurface(_defaultFormatAlpha);
 		assert(_overlay);
 		// We always filter the overlay with GL_LINEAR. This assures it's
 		// readable in case it needs to be scaled and does not affect it
@@ -816,7 +822,7 @@ void OpenGLGraphicsManager::setActualScreenSize(uint width, uint height) {
 		delete _osd;
 		_osd = nullptr;
 
-		_osd = createTexture(_defaultFormatAlpha);
+		_osd = createSurface(_defaultFormatAlpha);
 		assert(_osd);
 		// We always filter the osd with GL_LINEAR. This assures it's
 		// readable in case it needs to be scaled and does not affect it
@@ -836,38 +842,48 @@ void OpenGLGraphicsManager::setActualScreenSize(uint width, uint height) {
 }
 
 void OpenGLGraphicsManager::notifyContextCreate(const Graphics::PixelFormat &defaultFormat, const Graphics::PixelFormat &defaultFormatAlpha) {
-	// Initialize all extensions.
-	initializeGLExtensions();
+	// Initialize context for use.
+	initializeGLContext();
 
-	// Disable 3D properties.
-	GLCALL(glDisable(GL_CULL_FACE));
-	GLCALL(glDisable(GL_DEPTH_TEST));
-	GLCALL(glDisable(GL_LIGHTING));
-	GLCALL(glDisable(GL_FOG));
-	GLCALL(glDisable(GL_DITHER));
-	GLCALL(glShadeModel(GL_FLAT));
-	GLCALL(glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST));
+	// Initialize pipeline.
+	delete _pipeline;
+	_pipeline = nullptr;
 
-	// Default to black as clear color.
-	GLCALL(glClearColor(0.0f, 0.0f, 0.0f, 0.0f));
-	GLCALL(glColor4f(1.0f, 1.0f, 1.0f, 1.0f));
+#if !USE_FORCED_GLES
+	if (g_context.shadersSupported) {
+		ShaderMan.notifyCreate();
+		_pipeline = new ShaderPipeline(ShaderMan.query(ShaderManager::kDefault));
+	}
+#endif
 
-	// Setup alpha blend (for overlay and cursor).
-	GLCALL(glEnable(GL_BLEND));
-	GLCALL(glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA));
+#if !USE_FORCED_GLES2
+	if (_pipeline == nullptr) {
+		_pipeline = new FixedPipeline();
+	}
+#endif
+
+	g_context.setPipeline(_pipeline);
+
+	// Disable 3D properties.
+	GL_CALL(glDisable(GL_CULL_FACE));
+	GL_CALL(glDisable(GL_DEPTH_TEST));
+	GL_CALL(glDisable(GL_DITHER));
 
-	// Enable rendering with vertex and coord arrays.
-	GLCALL(glEnableClientState(GL_VERTEX_ARRAY));
-	GLCALL(glEnableClientState(GL_TEXTURE_COORD_ARRAY));
+	g_context.getActivePipeline()->setColor(1.0f, 1.0f, 1.0f, 1.0f);
 
-	GLCALL(glEnable(GL_TEXTURE_2D));
+	GL_CALL(glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA));
 
+	// Setup backbuffer state.
+
+	// Default to black as clear color.
+	_backBuffer.setClearColor(0.0f, 0.0f, 0.0f, 0.0f);
+	// Setup alpha blend (for overlay and cursor).
+	_backBuffer.enableBlend(true);
 	// Setup scissor state accordingly.
-	if (_overlayVisible) {
-		GLCALL(glDisable(GL_SCISSOR_TEST));
-	} else {
-		GLCALL(glEnable(GL_SCISSOR_TEST));
-	}
+	_backBuffer.enableScissorTest(!_overlayVisible);
+
+	g_context.getActivePipeline()->setFramebuffer(&_backBuffer);
+
 	// Clear the whole screen for the first three frames to assure any
 	// leftovers are cleared.
 	_scissorOverride = 3;
@@ -875,10 +891,7 @@ void OpenGLGraphicsManager::notifyContextCreate(const Graphics::PixelFormat &def
 	// We use a "pack" alignment (when reading from textures) to 4 here,
 	// since the only place where we really use it is the BMP screenshot
 	// code and that requires the same alignment too.
-	GLCALL(glPixelStorei(GL_PACK_ALIGNMENT, 4));
-
-	// Query information needed by textures.
-	Texture::queryTextureInformation();
+	GL_CALL(glPixelStorei(GL_PACK_ALIGNMENT, 4));
 
 	// Refresh the output screen dimensions if some are set up.
 	if (_outputScreenWidth != 0 && _outputScreenHeight != 0) {
@@ -892,42 +905,56 @@ void OpenGLGraphicsManager::notifyContextCreate(const Graphics::PixelFormat &def
 	_defaultFormatAlpha = defaultFormatAlpha;
 
 	if (_gameScreen) {
-		_gameScreen->recreateInternalTexture();
+		_gameScreen->recreate();
 	}
 
 	if (_overlay) {
-		_overlay->recreateInternalTexture();
+		_overlay->recreate();
 	}
 
 	if (_cursor) {
-		_cursor->recreateInternalTexture();
+		_cursor->recreate();
 	}
 
 #ifdef USE_OSD
 	if (_osd) {
-		_osd->recreateInternalTexture();
+		_osd->recreate();
 	}
 #endif
 }
 
 void OpenGLGraphicsManager::notifyContextDestroy() {
 	if (_gameScreen) {
-		_gameScreen->releaseInternalTexture();
+		_gameScreen->destroy();
 	}
 
 	if (_overlay) {
-		_overlay->releaseInternalTexture();
+		_overlay->destroy();
 	}
 
 	if (_cursor) {
-		_cursor->releaseInternalTexture();
+		_cursor->destroy();
 	}
 
 #ifdef USE_OSD
 	if (_osd) {
-		_osd->releaseInternalTexture();
+		_osd->destroy();
 	}
 #endif
+
+#if !USE_FORCED_GLES
+	if (g_context.shadersSupported) {
+		ShaderMan.notifyDestroy();
+	}
+#endif
+
+	// Destroy rendering pipeline.
+	g_context.setPipeline(nullptr);
+	delete _pipeline;
+	_pipeline = nullptr;
+
+	// Rest our context description since the context is gone soon.
+	g_context.reset();
 }
 
 void OpenGLGraphicsManager::adjustMousePosition(int16 &x, int16 &y) {
@@ -970,9 +997,15 @@ void OpenGLGraphicsManager::setMousePosition(int x, int y) {
 	}
 }
 
-Texture *OpenGLGraphicsManager::createTexture(const Graphics::PixelFormat &format, bool wantAlpha) {
+Surface *OpenGLGraphicsManager::createSurface(const Graphics::PixelFormat &format, bool wantAlpha) {
 	GLenum glIntFormat, glFormat, glType;
 	if (format.bytesPerPixel == 1) {
+#if !USE_FORCED_GLES
+		if (TextureCLUT8GPU::isSupportedByContext()) {
+			return new TextureCLUT8GPU();
+		}
+#endif
+
 		const Graphics::PixelFormat &virtFormat = wantAlpha ? _defaultFormatAlpha : _defaultFormat;
 		const bool supported = getGLPixelFormat(virtFormat, glIntFormat, glFormat, glType);
 		if (!supported) {
@@ -980,6 +1013,15 @@ Texture *OpenGLGraphicsManager::createTexture(const Graphics::PixelFormat &forma
 		} else {
 			return new TextureCLUT8(glIntFormat, glFormat, glType, virtFormat);
 		}
+#if !USE_FORCED_GL
+	} else if (isGLESContext() && format == Graphics::PixelFormat(2, 5, 5, 5, 0, 10, 5, 0, 0)) {
+		// OpenGL ES does not support a texture format usable for RGB555.
+		// Since SCUMM uses this pixel format for some games (and there is no
+		// hope for this to change anytime soon) we use pixel format
+		// conversion to a supported texture format. However, this is a one
+		// time exception.
+		return new TextureRGB555();
+#endif // !USE_FORCED_GL
 	} else {
 		const bool supported = getGLPixelFormat(format, glIntFormat, glFormat, glType);
 		if (!supported) {
@@ -1015,7 +1057,11 @@ bool OpenGLGraphicsManager::getGLPixelFormat(const Graphics::PixelFormat &pixelF
 		glFormat = GL_RGBA;
 		glType = GL_UNSIGNED_SHORT_4_4_4_4;
 		return true;
-#ifndef USE_GLES
+#if !USE_FORCED_GLES && !USE_FORCED_GLES2
+	// The formats below are not supported by every GLES implementation.
+	// Thus, we do not mark them as supported when a GLES context is setup.
+	} else if (isGLESContext()) {
+		return false;
 #ifdef SCUMM_LITTLE_ENDIAN
 	} else if (pixelFormat == Graphics::PixelFormat(4, 8, 8, 8, 8, 24, 16, 8, 0)) { // RGBA8888
 		glIntFormat = GL_RGBA;
@@ -1024,17 +1070,10 @@ bool OpenGLGraphicsManager::getGLPixelFormat(const Graphics::PixelFormat &pixelF
 		return true;
 #endif
 	} else if (pixelFormat == Graphics::PixelFormat(2, 5, 5, 5, 0, 10, 5, 0, 0)) { // RGB555
-		// GL_BGRA does not exist in every GLES implementation so should not be configured if
-		// USE_GLES is set.
 		glIntFormat = GL_RGB;
 		glFormat = GL_BGRA;
 		glType = GL_UNSIGNED_SHORT_1_5_5_5_REV;
 		return true;
-	} else if (pixelFormat == Graphics::PixelFormat(4, 8, 8, 8, 8, 16, 8, 0, 24)) { // ARGB8888
-		glIntFormat = GL_RGBA;
-		glFormat = GL_BGRA;
-		glType = GL_UNSIGNED_INT_8_8_8_8_REV;
-		return true;
 	} else if (pixelFormat == Graphics::PixelFormat(2, 4, 4, 4, 4, 8, 4, 0, 12)) { // ARGB4444
 		glIntFormat = GL_RGBA;
 		glFormat = GL_BGRA;
@@ -1054,8 +1093,8 @@ bool OpenGLGraphicsManager::getGLPixelFormat(const Graphics::PixelFormat &pixelF
 		return true;
 	} else if (pixelFormat == Graphics::PixelFormat(2, 5, 6, 5, 0, 0, 5, 11, 0)) { // BGR565
 		glIntFormat = GL_RGB;
-		glFormat = GL_BGR;
-		glType = GL_UNSIGNED_SHORT_5_6_5;
+		glFormat = GL_RGB;
+		glType = GL_UNSIGNED_SHORT_5_6_5_REV;
 		return true;
 	} else if (pixelFormat == Graphics::PixelFormat(2, 5, 5, 5, 1, 1, 6, 11, 0)) { // BGRA5551
 		glIntFormat = GL_RGBA;
@@ -1072,7 +1111,7 @@ bool OpenGLGraphicsManager::getGLPixelFormat(const Graphics::PixelFormat &pixelF
 		glFormat = GL_BGRA;
 		glType = GL_UNSIGNED_SHORT_4_4_4_4;
 		return true;
-#endif
+#endif // !USE_FORCED_GLES && !USE_FORCED_GLES2
 	} else {
 		return false;
 	}
@@ -1119,10 +1158,10 @@ void OpenGLGraphicsManager::recalculateDisplayArea() {
 	// Setup drawing limitation for game graphics.
 	// This invovles some trickery because OpenGL's viewport coordinate system
 	// is upside down compared to ours.
-	GLCALL(glScissor(_displayX,
-	                 _outputScreenHeight - _displayHeight - _displayY,
-	                 _displayWidth,
-	                 _displayHeight));
+	_backBuffer.setScissorBox(_displayX,
+	                          _outputScreenHeight - _displayHeight - _displayY,
+	                          _displayWidth,
+	                          _displayHeight);
 	// Clear the whole screen for the first three frames to remove leftovers.
 	_scissorOverride = 3;
 
@@ -1144,20 +1183,7 @@ void OpenGLGraphicsManager::updateCursorPalette() {
 		_cursor->setPalette(0, 256, _gamePalette);
 	}
 
-	// We remove all alpha bits from the palette entry of the color key.
-	// This makes sure its properly handled as color key.
-	const Graphics::PixelFormat &hardwareFormat = _cursor->getHardwareFormat();
-	const uint32 aMask = (0xFF >> hardwareFormat.aLoss) << hardwareFormat.aShift;
-
-	if (hardwareFormat.bytesPerPixel == 2) {
-		uint16 *palette = (uint16 *)_cursor->getPalette() + _cursorKeyColor;
-		*palette &= ~aMask;
-	} else if (hardwareFormat.bytesPerPixel == 4) {
-		uint32 *palette = (uint32 *)_cursor->getPalette() + _cursorKeyColor;
-		*palette &= ~aMask;
-	} else {
-		warning("OpenGLGraphicsManager::updateCursorPalette: Unsupported pixel depth %d", hardwareFormat.bytesPerPixel);
-	}
+	_cursor->setColorKey(_cursorKeyColor);
 }
 
 void OpenGLGraphicsManager::recalculateCursorScaling() {
@@ -1207,7 +1233,7 @@ void OpenGLGraphicsManager::saveScreenshot(const Common::String &filename) const
 	uint8 *pixels = new uint8[lineSize * height];
 
 	// Get pixel data from OpenGL buffer
-	GLCALL(glReadPixels(0, 0, width, height, GL_RGB, GL_UNSIGNED_BYTE, pixels));
+	GL_CALL(glReadPixels(0, 0, width, height, GL_RGB, GL_UNSIGNED_BYTE, pixels));
 
 	// BMP stores as BGR. Since we can't assume that GL_BGR is supported we
 	// will swap the components from the RGB we read to BGR on our own.
diff --git a/backends/graphics/opengl/opengl-graphics.h b/backends/graphics/opengl/opengl-graphics.h
index 9578839383..35435c156e 100644
--- a/backends/graphics/opengl/opengl-graphics.h
+++ b/backends/graphics/opengl/opengl-graphics.h
@@ -24,6 +24,7 @@
 #define BACKENDS_GRAPHICS_OPENGL_OPENGL_GRAPHICS_H
 
 #include "backends/graphics/opengl/opengl-sys.h"
+#include "backends/graphics/opengl/framebuffer.h"
 #include "backends/graphics/graphics.h"
 
 #include "common/frac.h"
@@ -40,7 +41,11 @@ namespace OpenGL {
 // SurfaceSDL backend enables it and disabling it can cause issues in sdl.cpp.
 #define USE_OSD 1
 
-class Texture;
+class Surface;
+class Pipeline;
+#if !USE_FORCED_GLES
+class Shader;
+#endif
 
 enum {
 	GFX_LINEAR = 0,
@@ -117,6 +122,11 @@ public:
 
 protected:
 	/**
+	 * Whether an GLES or GLES2 context is active.
+	 */
+	bool isGLESContext() const { return g_context.type == kContextGLES || g_context.type == kContextGLES2; }
+
+	/**
 	 * Set up the actual screen size available for the OpenGL code to do any
 	 * drawing.
 	 *
@@ -126,6 +136,16 @@ protected:
 	void setActualScreenSize(uint width, uint height);
 
 	/**
+	 * Sets the OpenGL (ES) type the graphics manager shall work with.
+	 *
+	 * This needs to be called at least once (and before ever calling
+	 * notifyContextCreate).
+	 *
+	 * @param type Type of the OpenGL (ES) contexts to be created.
+	 */
+	void setContextType(ContextType type);
+
+	/**
 	 * Notify the manager of a OpenGL context change. This should be the first
 	 * thing to call after you created an OpenGL (ES) context!
 	 *
@@ -172,15 +192,15 @@ protected:
 
 private:
 	/**
-	 * Create a texture with the specified pixel format.
+	 * Create a surface with the specified pixel format.
 	 *
-	 * @param format    The pixel format the Texture object should accept as
+	 * @param format    The pixel format the Surface object should accept as
 	 *                  input.
-	 * @param wantAlpha For CLUT8 textures this marks whether an alpha
+	 * @param wantAlpha For CLUT8 surfaces this marks whether an alpha
 	 *                  channel should be used.
-	 * @return A pointer to the texture or nullptr on failure.
+	 * @return A pointer to the surface or nullptr on failure.
 	 */
-	Texture *createTexture(const Graphics::PixelFormat &format, bool wantAlpha = false);
+	Surface *createSurface(const Graphics::PixelFormat &format, bool wantAlpha = false);
 
 	//
 	// Transaction support
@@ -281,6 +301,36 @@ private:
 	//
 
 	/**
+	 * Initialize the active context for use.
+	 */
+	void initializeGLContext();
+
+	/**
+	 * Render back buffer.
+	 */
+	Backbuffer _backBuffer;
+
+	/**
+	 * OpenGL pipeline used for rendering.
+	 */
+	Pipeline *_pipeline;
+
+protected:
+	/**
+	 * Query the address of an OpenGL function by name.
+	 *
+	 * This can only be used after a context has been created.
+	 * Please note that this function can return valid addresses even if the
+	 * OpenGL context does not support the function.
+	 *
+	 * @param name The name of the OpenGL function.
+	 * @return An function pointer for the requested OpenGL function or
+	 *         nullptr in case of failure.
+	 */
+	virtual void *getProcAddress(const char *name) const = 0;
+
+private:
+	/**
 	 * Try to determine the internal parameters for a given pixel format.
 	 *
 	 * @return true when the format can be used, false otherwise.
@@ -348,7 +398,7 @@ private:
 	/**
 	 * The virtual game screen.
 	 */
-	Texture *_gameScreen;
+	Surface *_gameScreen;
 
 	/**
 	 * The game palette if in CLUT8 mode.
@@ -367,7 +417,7 @@ private:
 	/**
 	 * The overlay screen.
 	 */
-	Texture *_overlay;
+	Surface *_overlay;
 
 	/**
 	 * Whether the overlay is visible or not.
@@ -386,7 +436,7 @@ private:
 	/**
 	 * The cursor image.
 	 */
-	Texture *_cursor;
+	Surface *_cursor;
 
 	/**
 	 * X coordinate of the cursor in phyiscal coordinates.
@@ -497,7 +547,7 @@ private:
 	/**
 	 * The OSD's contents.
 	 */
-	Texture *_osd;
+	Surface *_osd;
 
 	/**
 	 * Current opacity level of the OSD.
diff --git a/backends/graphics/opengl/opengl-sys.h b/backends/graphics/opengl/opengl-sys.h
index 4e21894380..4495128f32 100644
--- a/backends/graphics/opengl/opengl-sys.h
+++ b/backends/graphics/opengl/opengl-sys.h
@@ -23,35 +23,147 @@
 #ifndef BACKENDS_GRAPHICS_OPENGL_OPENGL_SYS_H
 #define BACKENDS_GRAPHICS_OPENGL_OPENGL_SYS_H
 
-// The purpose of this header is to include the OpenGL headers in an uniform
-// fashion. A notable example for a non standard port is the Tizen port.
-
 #include "common/scummsys.h"
 
-#ifdef WIN32
-#if defined(ARRAYSIZE) && !defined(_WINDOWS_)
-#undef ARRAYSIZE
-#endif
-#define WIN32_LEAN_AND_MEAN
-#include <windows.h>
-#undef ARRAYSIZE
+#include "backends/graphics/opengl/debug.h"
+#ifdef SDL_BACKEND
+#include "backends/platform/sdl/sdl-sys.h"
 #endif
 
-// HACK: In case common/util.h has been included already we need to make sure
-// to define ARRAYSIZE again in case of Windows.
-#if !defined(ARRAYSIZE) && defined(COMMON_UTIL_H)
-#define ARRAYSIZE(x) ((int)(sizeof(x) / sizeof(x[0])))
+// On OS X we only support GL contexts. The reason is that Apple's GL interface
+// uses "void *" for GLhandleARB which is not type compatible with GLint. This
+// kills our aliasing trick for extension functions and thus would force us to
+// supply two different Shader class implementations or introduce other
+// wrappers. OS X only supports GL contexts right now anyway (at least
+// according to SDL2 sources), thus it is not much of an issue.
+#if defined(MACOSX) && (!defined(USE_GLES_MODE) || USE_GLES_MODE != 0)
+//#warning "Only forced OpenGL mode is supported on Mac OS X. Overriding settings."
+#undef USE_GLES_MODE
+#define USE_GLES_MODE 0
 #endif
 
+// We allow to force GL or GLES modes on compile time.
+// For this the USE_GLES_MODE define is used. The following values represent
+// the given selection choices:
+//  0 - Force OpenGL context
+//  1 - Force OpenGL ES context
+//  2 - Force OpenGL ES 2.0 context
+#define USE_FORCED_GL    (defined(USE_GLES_MODE) && USE_GLES_MODE == 0)
+#define USE_FORCED_GLES  (defined(USE_GLES_MODE) && USE_GLES_MODE == 1)
+#define USE_FORCED_GLES2 (defined(USE_GLES_MODE) && USE_GLES_MODE == 2)
+
+// On Tizen we include the toolchain's OpenGL file. This is something we
+// actually want to avoid. However, since Tizen uses eglGetProcAddress which
+// is not required to return valid function pointers to non OpenGL extension
+// functions, we need the system's definitions to resolve all OpenGL
+// functions.
+// TODO: See if there is an alternative which allows us to avoid including
+// Tizen's OpenGL header here.
 #if defined(TIZEN)
-#include <FGraphicsOpengl.h>
-using namespace Tizen::Graphics::Opengl;
-#elif defined(USE_GLES)
-#include <GLES/gl.h>
-#elif defined(SDL_BACKEND)
-#include <SDL_opengl.h>
+	#include <FGraphicsOpengl.h>
+	using namespace Tizen::Graphics::Opengl;
+	#define USE_BUILTIN_OPENGL
 #else
-#include <GL/gl.h>
+	#include "backends/graphics/opengl/opengl-defs.h"
 #endif
 
+#ifdef SDL_BACKEND
+	// Win32 needs OpenGL functions declared with APIENTRY.
+	// However, SDL does not define APIENTRY in it's SDL.h file on non-Windows
+	// targets, thus if it is not available, we just dummy define it.
+	#ifndef APIENTRY
+		#define APIENTRY
+	#endif
+	#define GL_CALL_CONV APIENTRY
+#else
+	#define GL_CALL_CONV
+#endif
+
+namespace OpenGL {
+
+enum ContextType {
+	kContextGL,
+	kContextGLES,
+	kContextGLES2
+};
+
+class Pipeline;
+class Framebuffer;
+
+/**
+ * Description structure of the OpenGL (ES) context.
+ */
+struct Context {
+	/** The type of the active context. */
+	ContextType type;
+
+	/**
+	 * Reset context.
+	 *
+	 * This marks all extensions as unavailable and clears all function
+	 * pointers.
+	 */
+	void reset();
+
+	/** The maximum texture size supported by the context. */
+	GLint maxTextureSize;
+
+	/** Whether GL_ARB_texture_non_power_of_two is available or not. */
+	bool NPOTSupported;
+
+	/** Whether shader support is available or not. */
+	bool shadersSupported;
+
+	/** Whether multi texture support is available or not. */
+	bool multitextureSupported;
+
+	/** Whether FBO support is available or not. */
+	bool framebufferObjectSupported;
+
+#define GL_FUNC_DEF(ret, name, param) ret (GL_CALL_CONV *name)param
+#include "backends/graphics/opengl/opengl-func.h"
+#undef GL_FUNC_DEF
+
+	//
+	// Wrapper functionality to handle fixed-function pipelines and
+	// programmable pipelines in the same fashion.
+	//
+
+private:
+	/** Currently active rendering pipeline. */
+	Pipeline *activePipeline;
+
+public:
+	/**
+	 * Set new pipeline.
+	 *
+	 * Client is responsible for any memory management related to pipelines.
+	 *
+	 * @param pipeline Pipeline to activate.
+	 * @return Formerly active pipeline.
+	 */
+	Pipeline *setPipeline(Pipeline *pipeline);
+
+	/**
+	 * Query the currently active rendering pipeline.
+	 */
+	Pipeline *getActivePipeline() const { return activePipeline; }
+};
+
+/**
+ * The (active) OpenGL context.
+ */
+extern Context g_context;
+
+} // End of namespace OpenGL
+
+#define GL_CALL(x)                 GL_WRAP_DEBUG(g_context.x, x)
+#define GL_CALL_SAFE(func, params) \
+	do { \
+		if (g_context.func) { \
+			GL_CALL(func params); \
+		} \
+	} while (0)
+#define GL_ASSIGN(var, x)          GL_WRAP_DEBUG(var = g_context.x, x)
+
 #endif
diff --git a/backends/graphics/opengl/pipelines/clut8.cpp b/backends/graphics/opengl/pipelines/clut8.cpp
new file mode 100644
index 0000000000..fca40074f0
--- /dev/null
+++ b/backends/graphics/opengl/pipelines/clut8.cpp
@@ -0,0 +1,46 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "backends/graphics/opengl/pipelines/clut8.h"
+#include "backends/graphics/opengl/shader.h"
+#include "backends/graphics/opengl/framebuffer.h"
+
+namespace OpenGL {
+
+#if !USE_FORCED_GLES
+CLUT8LookUpPipeline::CLUT8LookUpPipeline()
+    : ShaderPipeline(ShaderMan.query(ShaderManager::kCLUT8LookUp)), _paletteTexture(nullptr) {
+}
+
+void CLUT8LookUpPipeline::drawTexture(const GLTexture &texture, const GLfloat *coordinates) {
+	// Set the palette texture.
+	GL_CALL(glActiveTexture(GL_TEXTURE1));
+	if (_paletteTexture) {
+		_paletteTexture->bind();
+	}
+
+	GL_CALL(glActiveTexture(GL_TEXTURE0));
+	ShaderPipeline::drawTexture(texture, coordinates);
+}
+#endif // !USE_FORCED_GLES
+
+} // End of namespace OpenGL
diff --git a/backends/graphics/opengl/extensions.h b/backends/graphics/opengl/pipelines/clut8.h
index 87452429e2..16724e4652 100644
--- a/backends/graphics/opengl/extensions.h
+++ b/backends/graphics/opengl/pipelines/clut8.h
@@ -20,21 +20,26 @@
  *
  */
 
-#ifndef BACKENDS_GRAPHICS_OPENGL_EXTENSIONS_H
-#define BACKENDS_GRAPHICS_OPENGL_EXTENSIONS_H
+#ifndef BACKENDS_GRAPHICS_OPENGL_PIPELINES_CLUT8_H
+#define BACKENDS_GRAPHICS_OPENGL_PIPELINES_CLUT8_H
+
+#include "backends/graphics/opengl/pipelines/shader.h"
 
 namespace OpenGL {
 
-/**
- * Checks for availability of extensions we want to use and initializes them
- * when available.
- */
-void initializeGLExtensions();
+#if !USE_FORCED_GLES
+class CLUT8LookUpPipeline : public ShaderPipeline {
+public:
+	CLUT8LookUpPipeline();
 
-/**
- * Whether non power of two textures are supported
- */
-extern bool g_extNPOTSupported;
+	void setPaletteTexture(const GLTexture *paletteTexture) { _paletteTexture = paletteTexture; }
+
+	virtual void drawTexture(const GLTexture &texture, const GLfloat *coordinates);
+
+private:
+	const GLTexture *_paletteTexture;
+};
+#endif // !USE_FORCED_GLES
 
 } // End of namespace OpenGL
 
diff --git a/backends/graphics/opengl/pipelines/fixed.cpp b/backends/graphics/opengl/pipelines/fixed.cpp
new file mode 100644
index 0000000000..8e3bd7eaee
--- /dev/null
+++ b/backends/graphics/opengl/pipelines/fixed.cpp
@@ -0,0 +1,70 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "backends/graphics/opengl/pipelines/fixed.h"
+
+namespace OpenGL {
+
+#if !USE_FORCED_GLES2
+void FixedPipeline::activateInternal() {
+	GL_CALL(glDisable(GL_LIGHTING));
+	GL_CALL(glDisable(GL_FOG));
+	GL_CALL(glShadeModel(GL_FLAT));
+	GL_CALL(glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST));
+
+	GL_CALL(glEnableClientState(GL_VERTEX_ARRAY));
+	GL_CALL(glEnableClientState(GL_TEXTURE_COORD_ARRAY));
+
+#if !USE_FORCED_GLES
+	if (g_context.multitextureSupported) {
+		GL_CALL(glActiveTexture(GL_TEXTURE0));
+	}
+#endif
+	GL_CALL(glEnable(GL_TEXTURE_2D));
+}
+
+void FixedPipeline::setColor(GLfloat r, GLfloat g, GLfloat b, GLfloat a) {
+	GL_CALL(glColor4f(r, g, b, a));
+}
+
+void FixedPipeline::drawTexture(const GLTexture &texture, const GLfloat *coordinates) {
+	texture.bind();
+
+	GL_CALL(glTexCoordPointer(2, GL_FLOAT, 0, texture.getTexCoords()));
+	GL_CALL(glVertexPointer(2, GL_FLOAT, 0, coordinates));
+	GL_CALL(glDrawArrays(GL_TRIANGLE_STRIP, 0, 4));
+}
+
+void FixedPipeline::setProjectionMatrix(const GLfloat *projectionMatrix) {
+	if (!isActive()) {
+		return;
+	}
+
+	GL_CALL(glMatrixMode(GL_PROJECTION));
+	GL_CALL(glLoadMatrixf(projectionMatrix));
+
+	GL_CALL(glMatrixMode(GL_MODELVIEW));
+	GL_CALL(glLoadIdentity());
+}
+#endif // !USE_FORCED_GLES2
+
+} // End of namespace OpenGL
diff --git a/backends/graphics/opengl/extensions.cpp b/backends/graphics/opengl/pipelines/fixed.h
index 4482ef82b5..6bfe140c19 100644
--- a/backends/graphics/opengl/extensions.cpp
+++ b/backends/graphics/opengl/pipelines/fixed.h
@@ -20,29 +20,27 @@
  *
  */
 
-#include "backends/graphics/opengl/extensions.h"
-#include "backends/graphics/opengl/opengl-sys.h"
+#ifndef BACKENDS_GRAPHICS_OPENGL_PIPELINES_FIXED_H
+#define BACKENDS_GRAPHICS_OPENGL_PIPELINES_FIXED_H
 
-#include "common/tokenizer.h"
+#include "backends/graphics/opengl/pipelines/pipeline.h"
 
 namespace OpenGL {
 
-bool g_extNPOTSupported = false;
+#if !USE_FORCED_GLES2
+class FixedPipeline : public Pipeline {
+public:
+	virtual void setColor(GLfloat r, GLfloat g, GLfloat b, GLfloat a);
 
-void initializeGLExtensions() {
-	const char *extString = (const char *)glGetString(GL_EXTENSIONS);
+	virtual void drawTexture(const GLTexture &texture, const GLfloat *coordinates);
 
-	// Initialize default state.
-	g_extNPOTSupported = false;
+	virtual void setProjectionMatrix(const GLfloat *projectionMatrix);
 
-	Common::StringTokenizer tokenizer(extString, " ");
-	while (!tokenizer.empty()) {
-		Common::String token = tokenizer.nextToken();
-
-		if (token == "GL_ARB_texture_non_power_of_two") {
-			g_extNPOTSupported = true;
-		}
-	}
-}
+protected:
+	virtual void activateInternal();
+};
+#endif // !USE_FORCED_GLES2
 
 } // End of namespace OpenGL
+
+#endif
diff --git a/backends/graphics/opengl/pipelines/pipeline.cpp b/backends/graphics/opengl/pipelines/pipeline.cpp
new file mode 100644
index 0000000000..6a59cd28e7
--- /dev/null
+++ b/backends/graphics/opengl/pipelines/pipeline.cpp
@@ -0,0 +1,66 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "backends/graphics/opengl/pipelines/pipeline.h"
+#include "backends/graphics/opengl/framebuffer.h"
+
+namespace OpenGL {
+
+Pipeline::Pipeline()
+    : _activeFramebuffer(nullptr), _isActive(false) {
+}
+
+void Pipeline::activate() {
+	_isActive = true;
+
+	if (_activeFramebuffer) {
+		_activeFramebuffer->activate();
+	}
+
+	activateInternal();
+}
+
+void Pipeline::deactivate() {
+	deactivateInternal();
+
+	if (_activeFramebuffer) {
+		_activeFramebuffer->deactivate();
+	}
+
+	_isActive = false;
+}
+
+Framebuffer *Pipeline::setFramebuffer(Framebuffer *framebuffer) {
+	Framebuffer *oldFramebuffer = _activeFramebuffer;
+	if (_isActive && oldFramebuffer) {
+		oldFramebuffer->deactivate();
+	}
+
+	_activeFramebuffer = framebuffer;
+	if (_isActive && _activeFramebuffer) {
+		_activeFramebuffer->activate();
+	}
+
+	return oldFramebuffer;
+}
+
+} // End of namespace OpenGL
diff --git a/backends/graphics/opengl/pipelines/pipeline.h b/backends/graphics/opengl/pipelines/pipeline.h
new file mode 100644
index 0000000000..9f32d33b95
--- /dev/null
+++ b/backends/graphics/opengl/pipelines/pipeline.h
@@ -0,0 +1,126 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef BACKENDS_GRAPHICS_OPENGL_PIPELINES_PIPELINE_H
+#define BACKENDS_GRAPHICS_OPENGL_PIPELINES_PIPELINE_H
+
+#include "backends/graphics/opengl/opengl-sys.h"
+#include "backends/graphics/opengl/texture.h"
+
+namespace OpenGL {
+
+class Framebuffer;
+
+/**
+ * Interface for OpenGL pipeline functionality.
+ *
+ * This encapsulates differences in various rendering pipelines used for
+ * OpenGL, OpenGL ES 1, and OpenGL ES 2.
+ */
+class Pipeline {
+public:
+	Pipeline();
+	virtual ~Pipeline() {}
+
+	/**
+	 * Activate the pipeline.
+	 *
+	 * This sets the OpenGL state to make use of drawing with the given
+	 * OpenGL pipeline.
+	 */
+	void activate();
+
+	/**
+	 * Deactivate the pipeline.
+	 */
+	void deactivate();
+
+	/**
+	 * Set framebuffer to render to.
+	 *
+	 * Client is responsible for any memory management related to framebuffer.
+	 *
+	 * @param framebuffer Framebuffer to activate.
+	 * @return Formerly active framebuffer.
+	 */
+	Framebuffer *setFramebuffer(Framebuffer *framebuffer);
+
+	/**
+	 * Set modulation color.
+	 *
+	 * @param r Red component in [0,1].
+	 * @param g Green component in [0,1].
+	 * @param b Blue component in [0,1].
+	 * @param a Alpha component in [0,1].
+	 */
+	virtual void setColor(GLfloat r, GLfloat g, GLfloat b, GLfloat a) = 0;
+
+	/**
+	 * Draw a texture rectangle to the currently active framebuffer.
+	 *
+	 * @param texture     Texture to use for drawing.
+	 * @param coordinates x1, y1, x2, y2 coordinates where to draw the texture.
+	 */
+	virtual void drawTexture(const GLTexture &texture, const GLfloat *coordinates) = 0;
+
+	void drawTexture(const GLTexture &texture, GLfloat x, GLfloat y, GLfloat w, GLfloat h) {
+		const GLfloat coordinates[4*2] = {
+			x,     y,
+			x + w, y,
+			x,     y + h,
+			x + w, y + h
+		};
+		drawTexture(texture, coordinates);
+	}
+
+	/**
+	 * Set the projection matrix.
+	 *
+	 * This is intended to be only ever be used by Framebuffer subclasses.
+	 */
+	virtual void setProjectionMatrix(const GLfloat *projectionMatrix) = 0;
+
+protected:
+	/**
+	 * Activate the pipeline.
+	 *
+	 * This sets the OpenGL state to make use of drawing with the given
+	 * OpenGL pipeline.
+	 */
+	virtual void activateInternal() = 0;
+
+	/**
+	 * Deactivate the pipeline.
+	 */
+	virtual void deactivateInternal() {}
+
+	bool isActive() const { return _isActive; }
+
+	Framebuffer *_activeFramebuffer;
+
+private:
+	bool _isActive;
+};
+
+} // End of namespace OpenGL
+
+#endif
diff --git a/backends/graphics/opengl/pipelines/shader.cpp b/backends/graphics/opengl/pipelines/shader.cpp
new file mode 100644
index 0000000000..8e38458f73
--- /dev/null
+++ b/backends/graphics/opengl/pipelines/shader.cpp
@@ -0,0 +1,94 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "backends/graphics/opengl/pipelines/shader.h"
+#include "backends/graphics/opengl/shader.h"
+#include "backends/graphics/opengl/framebuffer.h"
+
+namespace OpenGL {
+
+#if !USE_FORCED_GLES
+ShaderPipeline::ShaderPipeline(Shader *shader)
+    : _activeShader(shader), _colorAttributes() {
+	_vertexAttribLocation = shader->getAttributeLocation("position");
+	_texCoordAttribLocation = shader->getAttributeLocation("texCoordIn");
+	_colorAttribLocation = shader->getAttributeLocation("blendColorIn");
+
+	assert(_vertexAttribLocation   != -1);
+	assert(_texCoordAttribLocation != -1);
+	assert(_colorAttribLocation    != -1);
+
+	// One of the attributes needs to be passed through location 0, otherwise
+	// we get no output for GL contexts due to GL compatibility reasons. Let's
+	// check whether this ever happens. If this ever gets hit, we need to
+	// enable location 0 and pass some dummy values through it to fix output.
+	assert(   _vertexAttribLocation == 0
+	       || _texCoordAttribLocation == 0
+	       || _colorAttribLocation == 0);
+}
+
+void ShaderPipeline::activateInternal() {
+	GL_CALL(glEnableVertexAttribArray(_vertexAttribLocation));
+	GL_CALL(glEnableVertexAttribArray(_texCoordAttribLocation));
+	GL_CALL(glEnableVertexAttribArray(_colorAttribLocation));
+
+	if (g_context.multitextureSupported) {
+		GL_CALL(glActiveTexture(GL_TEXTURE0));
+	}
+
+	_activeShader->activate();
+}
+
+void ShaderPipeline::deactivateInternal() {
+	GL_CALL(glDisableVertexAttribArray(_vertexAttribLocation));
+	GL_CALL(glDisableVertexAttribArray(_texCoordAttribLocation));
+	GL_CALL(glDisableVertexAttribArray(_colorAttribLocation));
+
+	_activeShader->deactivate();
+}
+
+void ShaderPipeline::setColor(GLfloat r, GLfloat g, GLfloat b, GLfloat a) {
+	GLfloat *dst = _colorAttributes;
+	for (uint i = 0; i < 4; ++i) {
+		*dst++ = r;
+		*dst++ = g;
+		*dst++ = b;
+		*dst++ = a;
+	}
+
+	GL_CALL(glVertexAttribPointer(_colorAttribLocation, 4, GL_FLOAT, GL_FALSE, 0, _colorAttributes));
+}
+
+void ShaderPipeline::drawTexture(const GLTexture &texture, const GLfloat *coordinates) {
+	texture.bind();
+
+	GL_CALL(glVertexAttribPointer(_texCoordAttribLocation, 2, GL_FLOAT, GL_FALSE, 0, texture.getTexCoords()));
+	GL_CALL(glVertexAttribPointer(_vertexAttribLocation, 2, GL_FLOAT, GL_FALSE, 0, coordinates));
+	GL_CALL(glDrawArrays(GL_TRIANGLE_STRIP, 0, 4));
+}
+
+void ShaderPipeline::setProjectionMatrix(const GLfloat *projectionMatrix) {
+	_activeShader->setUniform("projection", new ShaderUniformMatrix44(projectionMatrix));
+}
+#endif // !USE_FORCED_GLES
+
+} // End of namespace OpenGL
diff --git a/backends/graphics/opengl/pipelines/shader.h b/backends/graphics/opengl/pipelines/shader.h
new file mode 100644
index 0000000000..6159607099
--- /dev/null
+++ b/backends/graphics/opengl/pipelines/shader.h
@@ -0,0 +1,59 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef BACKENDS_GRAPHICS_OPENGL_PIPELINES_SHADER_H
+#define BACKENDS_GRAPHICS_OPENGL_PIPELINES_SHADER_H
+
+#include "backends/graphics/opengl/pipelines/pipeline.h"
+
+namespace OpenGL {
+
+#if !USE_FORCED_GLES
+class Shader;
+
+class ShaderPipeline : public Pipeline {
+public:
+	ShaderPipeline(Shader *shader);
+
+	virtual void setColor(GLfloat r, GLfloat g, GLfloat b, GLfloat a);
+
+	virtual void drawTexture(const GLTexture &texture, const GLfloat *coordinates);
+
+	virtual void setProjectionMatrix(const GLfloat *projectionMatrix);
+
+protected:
+	virtual void activateInternal();
+	virtual void deactivateInternal();
+
+	GLint _vertexAttribLocation;
+	GLint _texCoordAttribLocation;
+	GLint _colorAttribLocation;
+
+	GLfloat _colorAttributes[4*4];
+
+	Shader *const _activeShader;
+};
+#endif // !USE_FORCED_GLES
+
+} // End of namespace OpenGL
+
+#endif
diff --git a/backends/graphics/opengl/shader.cpp b/backends/graphics/opengl/shader.cpp
new file mode 100644
index 0000000000..27981f25dc
--- /dev/null
+++ b/backends/graphics/opengl/shader.cpp
@@ -0,0 +1,332 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "backends/graphics/opengl/shader.h"
+
+#if !USE_FORCED_GLES
+
+#include "common/textconsole.h"
+#include "common/util.h"
+
+namespace Common {
+DECLARE_SINGLETON(OpenGL::ShaderManager);
+}
+
+namespace OpenGL {
+
+namespace {
+
+#pragma mark - Builtin Shader Sources -
+
+const char *const g_defaultVertexShader = 
+	"attribute vec4 position;\n"
+	"attribute vec2 texCoordIn;\n"
+	"attribute vec4 blendColorIn;\n"
+	"\n"
+	"uniform mat4 projection;\n"
+	"\n"
+	"varying vec2 texCoord;\n"
+	"varying vec4 blendColor;\n"
+	"\n"
+	"void main(void) {\n"
+	"\ttexCoord    = texCoordIn;\n"
+	"\tblendColor  = blendColorIn;\n"
+	"\tgl_Position = projection * position;\n"
+	"}\n";
+
+const char *const g_defaultFragmentShader =
+	"varying vec2 texCoord;\n"
+	"varying vec4 blendColor;\n"
+	"\n"
+	"uniform sampler2D texture;\n"
+	"\n"
+	"void main(void) {\n"
+	"\tgl_FragColor = blendColor * texture2D(texture, texCoord);\n"
+	"}\n";
+
+const char *const g_lookUpFragmentShader =
+	"varying vec2 texCoord;\n"
+	"varying vec4 blendColor;\n"
+	"\n"
+	"uniform sampler2D texture;\n"
+	"uniform sampler2D palette;\n"
+	"\n"
+	"const float adjustFactor = 255.0 / 256.0 + 1.0 / (2.0 * 256.0);"
+	"\n"
+	"void main(void) {\n"
+	"\tvec4 index = texture2D(texture, texCoord);\n"
+	"\tgl_FragColor = blendColor * texture2D(palette, vec2(index.a * adjustFactor, 0.0));\n"
+	"}\n";
+
+
+// Taken from: https://en.wikibooks.org/wiki/OpenGL_Programming/Modern_OpenGL_Tutorial_03#OpenGL_ES_2_portability
+const char *const g_precisionDefines =
+	"#ifdef GL_ES\n"
+	"\t#if defined(GL_FRAGMENT_PRECISION_HIGH) && GL_FRAGMENT_PRECISION_HIGH == 1\n"
+	"\t\tprecision highp float;\n"
+	"\t#else\n"
+	"\t\tprecision mediump float;\n"
+	"\t#endif\n"
+	"#else\n"
+	"\t#define highp\n"
+	"\t#define mediump\n"
+	"\t#define lowp\n"
+	"#endif\n";
+
+} // End of anonymous namespace
+
+#pragma mark - Uniform Values -
+
+void ShaderUniformInteger::set(GLint location) const {
+	GL_CALL(glUniform1i(location, _value));
+}
+
+void ShaderUniformFloat::set(GLint location) const {
+	GL_CALL(glUniform1f(location, _value));
+}
+
+void ShaderUniformMatrix44::set(GLint location) const {
+	GL_CALL(glUniformMatrix4fv(location, 1, GL_FALSE, _matrix));
+}
+
+#pragma mark - Shader Implementation -
+
+Shader::Shader(const Common::String &vertex, const Common::String &fragment)
+    : _vertex(vertex), _fragment(fragment), _isActive(false), _program(0), _uniforms() {
+	recreate();
+}
+
+Shader::~Shader() {
+	// According to extension specification glDeleteObjectARB silently ignores
+	// 0. However, with nVidia drivers this can cause GL_INVALID_VALUE, thus
+	// we do not call it with 0 as parameter to avoid warnings.
+	if (_program) {
+		GL_CALL_SAFE(glDeleteProgram, (_program));
+	}
+}
+
+void Shader::destroy() {
+	// According to extension specification glDeleteObjectARB silently ignores
+	// 0. However, with nVidia drivers this can cause GL_INVALID_VALUE, thus
+	// we do not call it with 0 as parameter to avoid warnings.
+	if (_program) {
+		GL_CALL(glDeleteProgram(_program));
+		_program = 0;
+	}
+}
+
+bool Shader::recreate() {
+	// Make sure any old programs are destroyed properly.
+	destroy();
+
+	GLshader vertexShader = compileShader(_vertex.c_str(), GL_VERTEX_SHADER);
+	if (!vertexShader) {
+		return false;
+	}
+
+	GLshader fragmentShader = compileShader(_fragment.c_str(), GL_FRAGMENT_SHADER);
+	if (!fragmentShader) {
+		GL_CALL(glDeleteShader(vertexShader));
+		return false;
+	}
+
+	GL_ASSIGN(_program, glCreateProgram());
+	if (!_program) {
+		GL_CALL(glDeleteShader(vertexShader));
+		GL_CALL(glDeleteShader(fragmentShader));
+		return false;
+	}
+
+	GL_CALL(glAttachShader(_program, vertexShader));
+	GL_CALL(glAttachShader(_program, fragmentShader));
+
+	GL_CALL(glLinkProgram(_program));
+
+	GL_CALL(glDetachShader(_program, fragmentShader));
+	GL_CALL(glDeleteShader(fragmentShader));
+
+	GL_CALL(glDetachShader(_program, vertexShader));
+	GL_CALL(glDeleteShader(vertexShader));
+
+	GLint result;
+	GL_CALL(glGetProgramiv(_program, GL_LINK_STATUS, &result));
+	if (result == GL_FALSE) {
+		GLint logSize;
+		GL_CALL(glGetProgramiv(_program, GL_INFO_LOG_LENGTH, &logSize));
+
+		GLchar *log = new GLchar[logSize];
+		GL_CALL(glGetProgramInfoLog(_program, logSize, nullptr, log));
+		warning("Could not link shader: \"%s\"", log);
+		delete[] log;
+
+		destroy();
+		return false;
+	}
+
+	// Set program object in case shader is active during recreation.
+	if (_isActive) {
+		GL_CALL(glUseProgram(_program));
+	}
+
+	for (UniformMap::iterator i = _uniforms.begin(), end = _uniforms.end(); i != end; ++i) {
+		i->_value.location = getUniformLocation(i->_key.c_str());
+		i->_value.altered = true;
+		if (_isActive) {
+			i->_value.set();
+		}
+	}
+
+	return true;
+}
+
+void Shader::activate() {
+	// Activate program.
+	GL_CALL(glUseProgram(_program));
+
+	// Reset changed uniform values.
+	for (UniformMap::iterator i = _uniforms.begin(), end = _uniforms.end(); i != end; ++i) {
+		i->_value.set();
+	}
+
+	_isActive = true;
+}
+
+void Shader::deactivate() {
+	_isActive = false;
+}
+
+GLint Shader::getAttributeLocation(const char *name) const {
+	GLint result = -1;
+	GL_ASSIGN(result, glGetAttribLocation(_program, name));
+	return result;
+}
+
+GLint Shader::getUniformLocation(const char *name) const {
+	GLint result = -1;
+	GL_ASSIGN(result, glGetUniformLocation(_program, name));
+	return result;
+}
+
+bool Shader::setUniform(const Common::String &name, ShaderUniformValue *value) {
+	UniformMap::iterator uniformIter = _uniforms.find(name);
+	Uniform *uniform;
+
+	if (uniformIter == _uniforms.end()) {
+		const GLint location = getUniformLocation(name.c_str());
+		if (location == -1) {
+			delete value;
+			return false;
+		}
+
+		uniform = &_uniforms[name];
+		uniform->location = location;
+	} else {
+		uniform = &uniformIter->_value;
+	}
+
+	uniform->value = Common::SharedPtr<ShaderUniformValue>(value);
+	uniform->altered = true;
+	if (_isActive) {
+		uniform->set();
+	}
+
+	return true;
+}
+
+GLshader Shader::compileShader(const char *source, GLenum shaderType) {
+	GLshader handle;
+	GL_ASSIGN(handle, glCreateShader(shaderType));
+	if (!handle) {
+		return 0;
+	}
+
+	const char *const sources[2] = {
+		g_precisionDefines,
+		source
+	};
+
+	GL_CALL(glShaderSource(handle, ARRAYSIZE(sources), sources, nullptr));
+	GL_CALL(glCompileShader(handle));
+
+	GLint result;
+	GL_CALL(glGetShaderiv(handle, GL_COMPILE_STATUS, &result));
+	if (result == GL_FALSE) {
+		GLint logSize;
+		GL_CALL(glGetShaderiv(handle, GL_INFO_LOG_LENGTH, &logSize));
+
+		GLchar *log = new GLchar[logSize];
+		GL_CALL(glGetShaderInfoLog(handle, logSize, nullptr, log));
+		warning("Could not compile shader \"%s\": \"%s\"", source, log);
+		delete[] log;
+
+		GL_CALL(glDeleteShader(handle));
+		return 0;
+	}
+
+	return handle;
+}
+
+ShaderManager::ShaderManager() : _initializeShaders(true) {
+}
+
+ShaderManager::~ShaderManager() {
+	for (int i = 0; i < ARRAYSIZE(_builtIn); ++i) {
+		delete _builtIn[i];
+	}
+}
+
+void ShaderManager::notifyDestroy() {
+	for (int i = 0; i < ARRAYSIZE(_builtIn); ++i) {
+		_builtIn[i]->destroy();
+	}
+}
+
+void ShaderManager::notifyCreate() {
+	if (_initializeShaders) {
+		_initializeShaders = false;
+
+		_builtIn[kDefault] = new Shader(g_defaultVertexShader, g_defaultFragmentShader);
+		_builtIn[kCLUT8LookUp] = new Shader(g_defaultVertexShader, g_lookUpFragmentShader);
+		_builtIn[kCLUT8LookUp]->setUniform1I("palette", 1);
+
+		for (uint i = 0; i < kMaxUsages; ++i) {
+			_builtIn[i]->setUniform1I("texture", 0);
+		}
+	} else {
+		for (int i = 0; i < ARRAYSIZE(_builtIn); ++i) {
+			_builtIn[i]->recreate();
+		}
+	}
+}
+
+Shader *ShaderManager::query(ShaderUsage shader) const {
+	if (shader == kMaxUsages) {
+		warning("OpenGL: ShaderManager::query used with kMaxUsages");
+		return nullptr;
+	}
+
+	return _builtIn[shader];
+}
+
+} // End of namespace OpenGL
+
+#endif // !USE_FORCED_GLES
diff --git a/backends/graphics/opengl/shader.h b/backends/graphics/opengl/shader.h
new file mode 100644
index 0000000000..ec1e516d14
--- /dev/null
+++ b/backends/graphics/opengl/shader.h
@@ -0,0 +1,288 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef BACKENDS_GRAPHICS_OPENGL_SHADER_H
+#define BACKENDS_GRAPHICS_OPENGL_SHADER_H
+
+#include "backends/graphics/opengl/opengl-sys.h"
+
+#if !USE_FORCED_GLES
+
+#include "common/singleton.h"
+#include "common/hash-str.h"
+#include "common/ptr.h"
+
+namespace OpenGL {
+
+/**
+ * A generic uniform value interface for a shader program.
+ */
+class ShaderUniformValue {
+public:
+	virtual ~ShaderUniformValue() {}
+
+	/**
+	 * Setup the the value to the given location.
+	 *
+	 * @param location Location of the uniform.
+	 */
+	virtual void set(GLint location) const = 0;
+};
+
+/**
+ * Integer value for a shader uniform.
+ */
+class ShaderUniformInteger : public ShaderUniformValue {
+public:
+	ShaderUniformInteger(GLint value) : _value(value) {}
+
+	virtual void set(GLint location) const override;
+
+private:
+	const GLint _value;
+};
+
+/**
+ * Float value for a shader uniform.
+ */
+class ShaderUniformFloat : public ShaderUniformValue {
+public:
+	ShaderUniformFloat(GLfloat value) : _value(value) {}
+
+	virtual void set(GLint location) const override;
+
+private:
+	const GLfloat _value;
+};
+
+/**
+ * 4x4 Matrix value for a shader uniform.
+ */
+class ShaderUniformMatrix44 : public ShaderUniformValue {
+public:
+	ShaderUniformMatrix44(const GLfloat *mat44) {
+		memcpy(_matrix, mat44, sizeof(_matrix));
+	}
+
+	virtual void set(GLint location) const override;
+
+private:
+	GLfloat _matrix[4*4];
+};
+
+class Shader {
+public:
+	Shader(const Common::String &vertex, const Common::String &fragment);
+	~Shader();
+
+	/**
+	 * Destroy the shader program.
+	 *
+	 * This keeps the vertex and fragment shader sources around and thus
+	 * allows for recreating the shader on context recreation. It also keeps
+	 * the uniform state around.
+	 */
+	void destroy();
+
+	/**
+	 * Recreate shader program.
+	 *
+	 * @return true on success, false on failure.
+	 */
+	bool recreate();
+
+	/**
+	 * Make shader active.
+	 */
+	void activate();
+
+	/**
+	 * Make shader inactive.
+	 */
+	void deactivate();
+
+	/**
+	 * Return location for attribute with given name.
+	 *
+	 * @param name Name of the attribute to look up in the shader.
+	 * @return The loctaion of -1 if attribute was not found.
+	 */
+	GLint getAttributeLocation(const char *name) const;
+	GLint getAttributeLocation(const Common::String &name) const {
+		return getAttributeLocation(name.c_str());
+	}
+
+	/**
+	 * Return location for uniform with given name.
+	 *
+	 * @param name Name of the uniform to look up in the shader.
+	 * @return The location or -1 if uniform was not found.
+	 */
+	GLint getUniformLocation(const char *name) const;
+	GLint getUniformLocation(const Common::String &name) const {
+		return getUniformLocation(name.c_str());
+	}
+
+	/**
+	 * Bind value to uniform.
+	 *
+	 * @param name  The name of the uniform to be set.
+	 * @param value The value to be set.
+	 * @return 'false' on error (i.e. uniform unknown or otherwise),
+	 *         'true' otherwise.
+	 */
+	bool setUniform(const Common::String &name, ShaderUniformValue *value);
+
+	/**
+	 * Bind integer value to uniform.
+	 *
+	 * @param name  The name of the uniform to be set.
+	 * @param value The value to be set.
+	 * @return 'false' on error (i.e. uniform unknown or otherwise),
+	 *         'true' otherwise.
+	 */
+	bool setUniform1I(const Common::String &name, GLint value) {
+		return setUniform(name, new ShaderUniformInteger(value));
+	}
+protected:
+	/**
+	 * Vertex shader sources.
+	 */
+	const Common::String _vertex;
+
+	/**
+	 * Fragment shader sources.
+	 */
+	const Common::String _fragment;
+
+	/**
+	 * Whether the shader is active or not.
+	 */
+	bool _isActive;
+
+	/**
+	 * Shader program handle.
+	 */
+	GLprogram _program;
+
+	/**
+	 * A uniform descriptor.
+	 *
+	 * This stores the state of a shader uniform. The state is made up of the
+	 * uniform location, whether the state was altered since last set, and the
+	 * value of the uniform.
+	 */
+	struct Uniform {
+		Uniform() : location(-1), altered(false), value() {}
+		Uniform(GLint loc, ShaderUniformValue *val)
+		    : location(loc), altered(true), value(val) {}
+
+		/**
+		 * Write uniform value into currently active shader.
+		 */
+		void set() {
+			if (altered && value) {
+				value->set(location);
+				altered = false;
+			}
+		}
+
+		/**
+		 * The location of the uniform or -1 in case it does not exist.
+		 */
+		GLint location;
+
+		/**
+		 * Whether the uniform state was aletered since last 'set'.
+		 */
+		bool altered;
+
+		/**
+		 * The value of the uniform.
+		 */
+		Common::SharedPtr<ShaderUniformValue> value;
+	};
+
+	typedef Common::HashMap<Common::String, Uniform> UniformMap;
+
+	/**
+	 * Map from uniform name to associated uniform description.
+	 */
+	UniformMap _uniforms;
+
+	/**
+	 * Compile a vertex or fragment shader.
+	 *
+	 * @param source     Sources to the shader.
+	 * @param shaderType Type of shader to compile (GL_FRAGMENT_SHADER_ARB or
+	 *                   GL_VERTEX_SHADER_ARB)
+	 * @return The shader object or 0 on failure.
+	 */
+	static GLshader compileShader(const char *source, GLenum shaderType);
+};
+
+class ShaderManager : public Common::Singleton<ShaderManager> {
+public:
+	enum ShaderUsage {
+		/** Default shader implementing the GL fixed-function pipeline. */
+		kDefault = 0,
+
+		/** CLUT8 look up shader. */
+		kCLUT8LookUp,
+
+		/** Number of built-in shaders. Should not be used for query. */
+		kMaxUsages
+	};
+
+	/**
+	 * Notify shader manager about context destruction.
+	 */
+	void notifyDestroy();
+
+	/**
+	 * Notify shader manager about context creation.
+	 */
+	void notifyCreate();
+
+	/**
+	 * Query a built-in shader.
+	 */
+	Shader *query(ShaderUsage shader) const;
+
+private:
+	friend class Common::Singleton<SingletonBaseType>;
+	ShaderManager();
+	~ShaderManager();
+
+	bool _initializeShaders;
+
+	Shader *_builtIn[kMaxUsages];
+};
+
+} // End of namespace OpenGL
+
+/** Shortcut for accessing the font manager. */
+#define ShaderMan (OpenGL::ShaderManager::instance())
+
+#endif // !USE_FORCED_GLES
+
+#endif
diff --git a/backends/graphics/opengl/texture.cpp b/backends/graphics/opengl/texture.cpp
index 7b0b22d630..8b94549971 100644
--- a/backends/graphics/opengl/texture.cpp
+++ b/backends/graphics/opengl/texture.cpp
@@ -21,8 +21,10 @@
  */
 
 #include "backends/graphics/opengl/texture.h"
-#include "backends/graphics/opengl/extensions.h"
-#include "backends/graphics/opengl/debug.h"
+#include "backends/graphics/opengl/shader.h"
+#include "backends/graphics/opengl/pipelines/pipeline.h"
+#include "backends/graphics/opengl/pipelines/clut8.h"
+#include "backends/graphics/opengl/framebuffer.h"
 
 #include "common/rect.h"
 #include "common/textconsole.h"
@@ -41,94 +43,140 @@ static GLuint nextHigher2(GLuint v) {
 	return ++v;
 }
 
-GLint Texture::_maxTextureSize = 0;
 
-void Texture::queryTextureInformation() {
-	glGetIntegerv(GL_MAX_TEXTURE_SIZE, &_maxTextureSize);
-	debug(5, "OpenGL maximum texture size: %d", _maxTextureSize);
+GLTexture::GLTexture(GLenum glIntFormat, GLenum glFormat, GLenum glType)
+    : _glIntFormat(glIntFormat), _glFormat(glFormat), _glType(glType),
+      _width(0), _height(0), _logicalWidth(0), _logicalHeight(0),
+      _texCoords(), _glFilter(GL_NEAREST),
+      _glTexture(0) {
+	create();
 }
 
-Texture::Texture(GLenum glIntFormat, GLenum glFormat, GLenum glType, const Graphics::PixelFormat &format)
-    : _glIntFormat(glIntFormat), _glFormat(glFormat), _glType(glType), _format(format), _glFilter(GL_NEAREST),
-      _glTexture(0), _textureData(), _userPixelData(), _allDirty(false) {
-	recreateInternalTexture();
+GLTexture::~GLTexture() {
+	GL_CALL_SAFE(glDeleteTextures, (1, &_glTexture));
 }
 
-Texture::~Texture() {
-	releaseInternalTexture();
-	_textureData.free();
+void GLTexture::enableLinearFiltering(bool enable) {
+	if (enable) {
+		_glFilter = GL_LINEAR;
+	} else {
+		_glFilter = GL_NEAREST;
+	}
+
+	bind();
+
+	GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, _glFilter));
+	GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, _glFilter));
 }
 
-void Texture::releaseInternalTexture() {
-	GLCALL(glDeleteTextures(1, &_glTexture));
+void GLTexture::destroy() {
+	GL_CALL(glDeleteTextures(1, &_glTexture));
 	_glTexture = 0;
 }
 
-void Texture::recreateInternalTexture() {
+void GLTexture::create() {
 	// Release old texture name in case it exists.
-	releaseInternalTexture();
+	destroy();
 
 	// Get a new texture name.
-	GLCALL(glGenTextures(1, &_glTexture));
+	GL_CALL(glGenTextures(1, &_glTexture));
 
 	// Set up all texture parameters.
-	GLCALL(glBindTexture(GL_TEXTURE_2D, _glTexture));
-	GLCALL(glPixelStorei(GL_UNPACK_ALIGNMENT, 1));
-	GLCALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, _glFilter));
-	GLCALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, _glFilter));
-	GLCALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE));
-	GLCALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE));
-
-	// In case there is an actual texture setup we reinitialize it.
-	if (_textureData.getPixels()) {
+	bind();
+	GL_CALL(glPixelStorei(GL_UNPACK_ALIGNMENT, 1));
+	GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, _glFilter));
+	GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, _glFilter));
+	GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE));
+	GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE));
+
+	// If a size is specified, allocate memory for it.
+	if (_width != 0 && _height != 0) {
 		// Allocate storage for OpenGL texture.
-		GLCALL(glTexImage2D(GL_TEXTURE_2D, 0, _glIntFormat, _textureData.w,
-		       _textureData.h, 0, _glFormat, _glType, NULL));
-
-		// Mark dirts such that it will be completely refreshed the next time.
-		flagDirty();
+		GL_CALL(glTexImage2D(GL_TEXTURE_2D, 0, _glIntFormat, _width, _height,
+		                     0, _glFormat, _glType, NULL));
 	}
 }
 
-void Texture::enableLinearFiltering(bool enable) {
-	if (enable) {
-		_glFilter = GL_LINEAR;
+void GLTexture::bind() const {
+	GL_CALL(glBindTexture(GL_TEXTURE_2D, _glTexture));
+}
+
+void GLTexture::setSize(uint width, uint height) {
+	const uint oldWidth  = _width;
+	const uint oldHeight = _height;
+
+	if (!g_context.NPOTSupported) {
+		_width  = nextHigher2(width);
+		_height = nextHigher2(height);
 	} else {
-		_glFilter = GL_NEAREST;
+		_width  = width;
+		_height = height;
 	}
 
-	GLCALL(glBindTexture(GL_TEXTURE_2D, _glTexture));
+	_logicalWidth  = width;
+	_logicalHeight = height;
 
-	GLCALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, _glFilter));
-	GLCALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, _glFilter));
-}
+	// If a size is specified, allocate memory for it.
+	if (width != 0 && height != 0) {
+		const GLfloat texWidth = (GLfloat)width / _width;
+		const GLfloat texHeight = (GLfloat)height / _height;
 
-void Texture::allocate(uint width, uint height) {
-	uint texWidth = width, texHeight = height;
-	if (!g_extNPOTSupported) {
-		texWidth  = nextHigher2(texWidth);
-		texHeight = nextHigher2(texHeight);
-	}
+		_texCoords[0] = 0;
+		_texCoords[1] = 0;
 
-	// In case the needed texture dimension changed we will reinitialize the
-	// texture.
-	if (texWidth != _textureData.w || texHeight != _textureData.h) {
-		// Create a buffer for the texture data.
-		_textureData.create(texWidth, texHeight, _format);
+		_texCoords[2] = texWidth;
+		_texCoords[3] = 0;
 
-		// Set the texture.
-		GLCALL(glBindTexture(GL_TEXTURE_2D, _glTexture));
+		_texCoords[4] = 0;
+		_texCoords[5] = texHeight;
 
-		// Allocate storage for OpenGL texture.
-		GLCALL(glTexImage2D(GL_TEXTURE_2D, 0, _glIntFormat, _textureData.w,
-		       _textureData.h, 0, _glFormat, _glType, NULL));
+		_texCoords[6] = texWidth;
+		_texCoords[7] = texHeight;
+
+		// Allocate storage for OpenGL texture if necessary.
+		if (oldWidth != _width || oldHeight != _height) {
+			bind();
+			GL_CALL(glTexImage2D(GL_TEXTURE_2D, 0, _glIntFormat, _width,
+			                     _height, 0, _glFormat, _glType, NULL));
+		}
 	}
+}
 
-	// Create a sub-buffer for raw access.
-	_userPixelData = _textureData.getSubArea(Common::Rect(width, height));
+void GLTexture::updateArea(const Common::Rect &area, const Graphics::Surface &src) {
+	// Set the texture on the active texture unit.
+	bind();
+
+	// Update the actual texture.
+	// Although we have the area of the texture buffer we want to update we
+	// cannot take advantage of the left/right boundries here because it is
+	// not possible to specify a pitch to glTexSubImage2D. To be precise, with
+	// plain OpenGL we could set GL_UNPACK_ROW_LENGTH to achieve this. However,
+	// OpenGL ES 1.0 does not support GL_UNPACK_ROW_LENGTH. Thus, we are left
+	// with the following options:
+	//
+	// 1) (As we do right now) Simply always update the whole texture lines of
+	//    rect changed. This is simplest to implement. In case performance is
+	//    really an issue we can think of switching to another method.
+	//
+	// 2) Copy the dirty rect to a temporary buffer and upload that by using
+	//    glTexSubImage2D. This is what the Android backend does. It is more
+	//    complicated though.
+	//
+	// 3) Use glTexSubImage2D per line changed. This is what the old OpenGL
+	//    graphics manager did but it is much slower! Thus, we do not use it.
+	GL_CALL(glTexSubImage2D(GL_TEXTURE_2D, 0, 0, area.top, src.w, area.height(),
+	                       _glFormat, _glType, src.getBasePtr(0, area.top)));
+}
+
+//
+// Surface
+//
+
+Surface::Surface()
+    : _allDirty(false), _dirtyArea() {
 }
 
-void Texture::copyRectToTexture(uint x, uint y, uint w, uint h, const void *srcPtr, uint srcPitch) {
+void Surface::copyRectToTexture(uint x, uint y, uint w, uint h, const void *srcPtr, uint srcPitch) {
 	Graphics::Surface *dstSurf = getSurface();
 	assert(x + w <= dstSurf->w);
 	assert(y + h <= dstSurf->h);
@@ -159,50 +207,74 @@ void Texture::copyRectToTexture(uint x, uint y, uint w, uint h, const void *srcP
 	}
 }
 
-void Texture::fill(uint32 color) {
+void Surface::fill(uint32 color) {
 	Graphics::Surface *dst = getSurface();
 	dst->fillRect(Common::Rect(dst->w, dst->h), color);
 
 	flagDirty();
 }
 
-void Texture::draw(GLfloat x, GLfloat y, GLfloat w, GLfloat h) {
-	// Only do any processing when the Texture is initialized.
-	if (!_textureData.getPixels()) {
-		return;
+Common::Rect Surface::getDirtyArea() const {
+	if (_allDirty) {
+		return Common::Rect(getWidth(), getHeight());
+	} else {
+		return _dirtyArea;
+	}
+}
+
+//
+// Surface implementations
+//
+
+Texture::Texture(GLenum glIntFormat, GLenum glFormat, GLenum glType, const Graphics::PixelFormat &format)
+    : Surface(), _format(format), _glTexture(glIntFormat, glFormat, glType),
+      _textureData(), _userPixelData() {
+}
+
+Texture::~Texture() {
+	_textureData.free();
+}
+
+void Texture::destroy() {
+	_glTexture.destroy();
+}
+
+void Texture::recreate() {
+	_glTexture.create();
+
+	// In case image date exists assure it will be completely refreshed next
+	// time.
+	if (_textureData.getPixels()) {
+		flagDirty();
+	}
+}
+
+void Texture::enableLinearFiltering(bool enable) {
+	_glTexture.enableLinearFiltering(enable);
+}
+
+void Texture::allocate(uint width, uint height) {
+	// Assure the texture can contain our user data.
+	_glTexture.setSize(width, height);
+
+	// In case the needed texture dimension changed we will reinitialize the
+	// texture data buffer.
+	if (_glTexture.getWidth() != _textureData.w || _glTexture.getHeight() != _textureData.h) {
+		// Create a buffer for the texture data.
+		_textureData.create(_glTexture.getWidth(), _glTexture.getHeight(), _format);
 	}
 
-	// First update any potentional changes.
-	updateTexture();
-
-	// Set the texture.
-	GLCALL(glBindTexture(GL_TEXTURE_2D, _glTexture));
-
-	// Calculate the texture rect that will be drawn.
-	const GLfloat texWidth = (GLfloat)_userPixelData.w / _textureData.w;
-	const GLfloat texHeight = (GLfloat)_userPixelData.h / _textureData.h;
-	const GLfloat texcoords[4*2] = {
-		0,        0,
-		texWidth, 0,
-		0,        texHeight,
-		texWidth, texHeight
-	};
-	GLCALL(glTexCoordPointer(2, GL_FLOAT, 0, texcoords));
-
-	// Calculate the screen rect where the texture will be drawn.
-	const GLfloat vertices[4*2] = {
-		x,     y,
-		x + w, y,
-		x,     y + h,
-		x + w, y + h
-	};
-	GLCALL(glVertexPointer(2, GL_FLOAT, 0, vertices));
-
-	// Draw the texture to the screen buffer.
-	GLCALL(glDrawArrays(GL_TRIANGLE_STRIP, 0, 4));
-}
-
-void Texture::updateTexture() {
+	// Create a sub-buffer for raw access.
+	_userPixelData = _textureData.getSubArea(Common::Rect(width, height));
+
+	// The whole texture is dirty after we changed the size. This fixes
+	// multiple texture size changes without any actual update in between.
+	// Without this we might try to write a too big texture into the GL
+	// texture.
+	flagDirty();
+}
+
+void Texture::updateGLTexture() {
 	if (!isDirty()) {
 		return;
 	}
@@ -211,7 +283,7 @@ void Texture::updateTexture() {
 
 	// In case we use linear filtering we might need to duplicate the last
 	// pixel row/column to avoid glitches with filtering.
-	if (_glFilter == GL_LINEAR) {
+	if (_glTexture.isLinearFilteringEnabled()) {
 		if (dirtyArea.right == _userPixelData.w && _userPixelData.w != _textureData.w) {
 			uint height = dirtyArea.height();
 
@@ -238,42 +310,12 @@ void Texture::updateTexture() {
 		}
 	}
 
-	// Set the texture.
-	GLCALL(glBindTexture(GL_TEXTURE_2D, _glTexture));
-
-	// Update the actual texture.
-	// Although we keep track of the dirty part of the texture buffer we
-	// cannot take advantage of the left/right boundries here because it is
-	// not possible to specify a pitch to glTexSubImage2D. To be precise, with
-	// plain OpenGL we could set GL_UNPACK_ROW_LENGTH to achieve this. However,
-	// OpenGL ES 1.0 does not support GL_UNPACK_ROW_LENGTH. Thus, we are left
-	// with the following options:
-	//
-	// 1) (As we do right now) Simply always update the whole texture lines of
-	//    rect changed. This is simplest to implement. In case performance is
-	//    really an issue we can think of switching to another method.
-	//
-	// 2) Copy the dirty rect to a temporary buffer and upload that by using
-	//    glTexSubImage2D. This is what the Android backend does. It is more
-	//    complicated though.
-	//
-	// 3) Use glTexSubImage2D per line changed. This is what the old OpenGL
-	//    graphics manager did but it is much slower! Thus, we do not use it.
-	GLCALL(glTexSubImage2D(GL_TEXTURE_2D, 0, 0, dirtyArea.top, _textureData.w, dirtyArea.height(),
-	                       _glFormat, _glType, _textureData.getBasePtr(0, dirtyArea.top)));
+	_glTexture.updateArea(dirtyArea, _textureData);
 
 	// We should have handled everything, thus not dirty anymore.
 	clearDirty();
 }
 
-Common::Rect Texture::getDirtyArea() const {
-	if (_allDirty) {
-		return Common::Rect(_userPixelData.w, _userPixelData.h);
-	} else {
-		return _dirtyArea;
-	}
-}
-
 TextureCLUT8::TextureCLUT8(GLenum glIntFormat, GLenum glFormat, GLenum glType, const Graphics::PixelFormat &format)
     : Texture(glIntFormat, glFormat, glType, format), _clut8Data(), _palette(new byte[256 * format.bytesPerPixel]) {
 	memset(_palette, 0, sizeof(byte) * format.bytesPerPixel);
@@ -301,6 +343,25 @@ Graphics::PixelFormat TextureCLUT8::getFormat() const {
 	return Graphics::PixelFormat::createFormatCLUT8();
 }
 
+void TextureCLUT8::setColorKey(uint colorKey) {
+	// We remove all alpha bits from the palette entry of the color key.
+	// This makes sure its properly handled as color key.
+	const uint32 aMask = (0xFF >> _format.aLoss) << _format.aShift;
+
+	if (_format.bytesPerPixel == 2) {
+		uint16 *palette = (uint16 *)_palette + colorKey;
+		*palette &= ~aMask;
+	} else if (_format.bytesPerPixel == 4) {
+		uint32 *palette = (uint32 *)_palette + colorKey;
+		*palette &= ~aMask;
+	} else {
+		warning("TextureCLUT8::setColorKey: Unsupported pixel depth %d", _format.bytesPerPixel);
+	}
+
+	// A palette changes means we need to refresh the whole surface.
+	flagDirty();
+}
+
 namespace {
 template<typename ColorType>
 inline void convertPalette(ColorType *dst, const byte *src, uint colors, const Graphics::PixelFormat &format) {
@@ -312,14 +373,12 @@ inline void convertPalette(ColorType *dst, const byte *src, uint colors, const G
 } // End of anonymous namespace
 
 void TextureCLUT8::setPalette(uint start, uint colors, const byte *palData) {
-	const Graphics::PixelFormat &hardwareFormat = getHardwareFormat();
-
-	if (hardwareFormat.bytesPerPixel == 2) {
-		convertPalette<uint16>((uint16 *)_palette + start, palData, colors, hardwareFormat);
-	} else if (hardwareFormat.bytesPerPixel == 4) {
-		convertPalette<uint32>((uint32 *)_palette + start, palData, colors, hardwareFormat);
+	if (_format.bytesPerPixel == 2) {
+		convertPalette<uint16>((uint16 *)_palette + start, palData, colors, _format);
+	} else if (_format.bytesPerPixel == 4) {
+		convertPalette<uint32>((uint32 *)_palette + start, palData, colors, _format);
 	} else {
-		warning("TextureCLUT8::setPalette: Unsupported pixel depth: %d", hardwareFormat.bytesPerPixel);
+		warning("TextureCLUT8::setPalette: Unsupported pixel depth: %d", _format.bytesPerPixel);
 	}
 
 	// A palette changes means we need to refresh the whole surface.
@@ -343,7 +402,7 @@ inline void doPaletteLookUp(PixelType *dst, const byte *src, uint width, uint he
 }
 } // End of anonymous namespace
 
-void TextureCLUT8::updateTexture() {
+void TextureCLUT8::updateGLTexture() {
 	if (!isDirty()) {
 		return;
 	}
@@ -368,7 +427,222 @@ void TextureCLUT8::updateTexture() {
 	}
 
 	// Do generic handling of updating the texture.
-	Texture::updateTexture();
+	Texture::updateGLTexture();
+}
+
+#if !USE_FORCED_GL
+TextureRGB555::TextureRGB555()
+    : Texture(GL_RGB, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, Graphics::PixelFormat(2, 5, 6, 5, 0, 11, 5, 0, 0)),
+      _rgb555Data() {
+}
+
+TextureRGB555::~TextureRGB555() {
+	_rgb555Data.free();
+}
+
+void TextureRGB555::allocate(uint width, uint height) {
+	Texture::allocate(width, height);
+
+	// We only need to reinitialize our RGB555 surface when the output size
+	// changed.
+	if (width == _rgb555Data.w && height == _rgb555Data.h) {
+		return;
+	}
+
+	_rgb555Data.create(width, height, Graphics::PixelFormat(2, 5, 5, 5, 0, 10, 5, 0, 0));
+}
+
+Graphics::PixelFormat TextureRGB555::getFormat() const {
+	return Graphics::PixelFormat(2, 5, 5, 5, 0, 10, 5, 0, 0);
+}
+
+void TextureRGB555::updateTexture() {
+	if (!isDirty()) {
+		return;
+	}
+
+	// Convert color space.
+	Graphics::Surface *outSurf = Texture::getSurface();
+
+	const Common::Rect dirtyArea = getDirtyArea();
+
+	uint16 *dst = (uint16 *)outSurf->getBasePtr(dirtyArea.left, dirtyArea.top);
+	const uint dstAdd = outSurf->pitch - 2 * dirtyArea.width();
+
+	const uint16 *src = (const uint16 *)_rgb555Data.getBasePtr(dirtyArea.left, dirtyArea.top);
+	const uint srcAdd = _rgb555Data.pitch - 2 * dirtyArea.width();
+
+	for (int height = dirtyArea.height(); height > 0; --height) {
+		for (int width = dirtyArea.width(); width > 0; --width) {
+			const uint16 color = *src++;
+
+			*dst++ =   ((color & 0x7C00) << 1)                             // R
+			         | (((color & 0x03E0) << 1) | ((color & 0x0200) >> 4)) // G
+			         | (color & 0x001F);                                   // B
+		}
+
+		src = (const uint16 *)((const byte *)src + srcAdd);
+		dst = (uint16 *)((byte *)dst + dstAdd);
+	}
+
+	// Do generic handling of updating the texture.
+	Texture::updateGLTexture();
+}
+#endif // !USE_FORCED_GL
+
+#if !USE_FORCED_GLES
+
+// _clut8Texture needs 8 bits internal precision, otherwise graphics glitches
+// can occur. GL_ALPHA does not have any internal precision requirements.
+// However, in practice (according to fuzzie) it's 8bit. If we run into
+// problems, we need to switch to GL_R8 and GL_RED, but that is only supported
+// for ARB_texture_rg and GLES3+ (EXT_rexture_rg does not support GL_R8).
+TextureCLUT8GPU::TextureCLUT8GPU()
+    : _clut8Texture(GL_ALPHA, GL_ALPHA, GL_UNSIGNED_BYTE),
+      _paletteTexture(GL_RGBA, GL_RGBA, GL_UNSIGNED_BYTE),
+      _target(new TextureTarget()), _clut8Pipeline(new CLUT8LookUpPipeline()),
+      _clut8Vertices(), _clut8Data(), _userPixelData(), _palette(),
+      _paletteDirty(false) {
+	// Allocate space for 256 colors.
+	_paletteTexture.setSize(256, 1);
+
+	// Setup pipeline.
+	_clut8Pipeline->setFramebuffer(_target);
+	_clut8Pipeline->setPaletteTexture(&_paletteTexture);
+}
+
+TextureCLUT8GPU::~TextureCLUT8GPU() {
+	delete _clut8Pipeline;
+	delete _target;
+	_clut8Data.free();
+}
+
+void TextureCLUT8GPU::destroy() {
+	_clut8Texture.destroy();
+	_paletteTexture.destroy();
+	_target->destroy();
+}
+
+void TextureCLUT8GPU::recreate() {
+	_clut8Texture.create();
+	_paletteTexture.create();
+	_target->create();
+
+	// In case image date exists assure it will be completely refreshed next
+	// time.
+	if (_clut8Data.getPixels()) {
+		flagDirty();
+		_paletteDirty = true;
+	}
+}
+
+void TextureCLUT8GPU::enableLinearFiltering(bool enable) {
+	_target->getTexture()->enableLinearFiltering(enable);
+}
+
+void TextureCLUT8GPU::allocate(uint width, uint height) {
+	// Assure the texture can contain our user data.
+	_clut8Texture.setSize(width, height);
+	_target->setSize(width, height);
+
+	// In case the needed texture dimension changed we will reinitialize the
+	// texture data buffer.
+	if (_clut8Texture.getWidth() != _clut8Data.w || _clut8Texture.getHeight() != _clut8Data.h) {
+		// Create a buffer for the texture data.
+		_clut8Data.create(_clut8Texture.getWidth(), _clut8Texture.getHeight(), Graphics::PixelFormat::createFormatCLUT8());
+	}
+
+	// Create a sub-buffer for raw access.
+	_userPixelData = _clut8Data.getSubArea(Common::Rect(width, height));
+
+	// Setup structures for internal rendering to _glTexture.
+	_clut8Vertices[0] = 0;
+	_clut8Vertices[1] = 0;
+
+	_clut8Vertices[2] = width;
+	_clut8Vertices[3] = 0;
+
+	_clut8Vertices[4] = 0;
+	_clut8Vertices[5] = height;
+
+	_clut8Vertices[6] = width;
+	_clut8Vertices[7] = height;
+
+	// The whole texture is dirty after we changed the size. This fixes
+	// multiple texture size changes without any actual update in between.
+	// Without this we might try to write a too big texture into the GL
+	// texture.
+	flagDirty();
+}
+
+Graphics::PixelFormat TextureCLUT8GPU::getFormat() const {
+	return Graphics::PixelFormat::createFormatCLUT8();
+}
+
+void TextureCLUT8GPU::setColorKey(uint colorKey) {
+	_palette[colorKey * 4 + 3] = 0x00;
+
+	_paletteDirty = true;
+}
+
+void TextureCLUT8GPU::setPalette(uint start, uint colors, const byte *palData) {
+	byte *dst = _palette + start * 4;
+
+	while (colors-- > 0) {
+		memcpy(dst, palData, 3);
+		dst[3] = 0xFF;
+
+		dst += 4;
+		palData += 3;
+	}
+
+	_paletteDirty = true;
+}
+
+const GLTexture &TextureCLUT8GPU::getGLTexture() const {
+	return *_target->getTexture();
+}
+
+void TextureCLUT8GPU::updateGLTexture() {
+	const bool needLookUp = Surface::isDirty() || _paletteDirty;
+
+	// Update CLUT8 texture if necessary.
+	if (Surface::isDirty()) {
+		_clut8Texture.updateArea(getDirtyArea(), _clut8Data);
+		clearDirty();
+	}
+
+	// Update palette if necessary.
+	if (_paletteDirty) {
+		Graphics::Surface palSurface;
+		palSurface.init(256, 1, 256, _palette,
+#ifdef SCUMM_LITTLE_ENDIAN
+		                Graphics::PixelFormat(4, 8, 8, 8, 8, 0, 8, 16, 24) // ABGR8888
+#else
+		                Graphics::PixelFormat(4, 8, 8, 8, 8, 24, 16, 8, 0) // RGBA8888
+#endif
+		               );
+
+		_paletteTexture.updateArea(Common::Rect(256, 1), palSurface);
+		_paletteDirty = false;
+	}
+
+	// In case any data changed, do color look up and store result in _target.
+	if (needLookUp) {
+		lookUpColors();
+	}
+}
+
+void TextureCLUT8GPU::lookUpColors() {
+	// Setup pipeline to do color look up.
+	Pipeline *oldPipeline = g_context.setPipeline(_clut8Pipeline);
+
+	// Do color look up.
+	g_context.getActivePipeline()->drawTexture(_clut8Texture, _clut8Vertices);
+
+	// Restore old state.
+	g_context.setPipeline(oldPipeline);
 }
+#endif // !USE_FORCED_GLES
 
 } // End of namespace OpenGL
diff --git a/backends/graphics/opengl/texture.h b/backends/graphics/opengl/texture.h
index ad70833544..3be09cb9f9 100644
--- a/backends/graphics/opengl/texture.h
+++ b/backends/graphics/opengl/texture.h
@@ -32,115 +32,267 @@
 
 namespace OpenGL {
 
+class Shader;
+
 /**
- * An OpenGL texture wrapper. It automatically takes care of all OpenGL
- * texture handling issues and also provides access to the texture data.
+ * A simple GL texture object abstraction.
+ *
+ * This is used for low-level GL texture handling.
  */
-class Texture {
+class GLTexture {
 public:
 	/**
-	 * Create a new texture with the specific internal format.
+	 * Constrcut a new GL texture object.
 	 *
 	 * @param glIntFormat The internal format to use.
 	 * @param glFormat    The input format.
 	 * @param glType      The input type.
-	 * @param format      The format used for the texture input.
 	 */
-	Texture(GLenum glIntFormat, GLenum glFormat, GLenum glType, const Graphics::PixelFormat &format);
-	virtual ~Texture();
+	GLTexture(GLenum glIntFormat, GLenum glFormat, GLenum glType);
+	~GLTexture();
+
+	/**
+	 * Enable or disable linear texture filtering.
+	 *
+	 * @param enable true to enable and false to disable.
+	 */
+	void enableLinearFiltering(bool enable);
+
+	/**
+	 * Test whether linear filtering is enabled.
+	 */
+	bool isLinearFilteringEnabled() const { return (_glFilter == GL_LINEAR); }
 
 	/**
 	 * Destroy the OpenGL texture name.
 	 */
-	void releaseInternalTexture();
+	void destroy();
+
+	/**
+	 * Create the OpenGL texture name.
+	 */
+	void create();
+
+	/**
+	 * Bind the texture to the active texture unit.
+	 */
+	void bind() const;
+
+	/**
+	 * Sets the size of the texture in pixels.
+	 *
+	 * The internal OpenGL texture might have a different size. To query the
+	 * actual size use getWidth()/getHeight().
+	 *
+	 * @param width  The desired logical width.
+	 * @param height The desired logical height.
+	 */
+	void setSize(uint width, uint height);
+
+	/**
+	 * Copy image data to the texture.
+	 *
+	 * @param area     The area to update.
+	 * @param src      Surface for the whole texture containing the pixel data
+	 *                 to upload. Only the area described by area will be
+	 *                 uploaded.
+	 */
+	void updateArea(const Common::Rect &area, const Graphics::Surface &src);
 
 	/**
-	 * Create the OpenGL texture name and flag the whole texture as dirty.
+	 * Query the GL texture's width.
 	 */
-	void recreateInternalTexture();
+	uint getWidth() const { return _width; }
+
+	/**
+	 * Query the GL texture's height.
+	 */
+	uint getHeight() const { return _height; }
+
+	/**
+	 * Query the logical texture's width.
+	 */
+	uint getLogicalWidth() const { return _logicalWidth; }
+
+	/**
+	 * Query the logical texture's height.
+	 */
+	uint getLogicalHeight() const { return _logicalHeight; }
+
+	/**
+	 * Obtain texture coordinates for rectangular drawing.
+	 */
+	const GLfloat *getTexCoords() const { return _texCoords; }
+
+	/**
+	 * Obtain texture name.
+	 *
+	 * Beware that the texture name changes whenever create is used.
+	 * destroy will invalidate the texture name.
+	 */
+	GLuint getGLTexture() const { return _glTexture; }
+private:
+	const GLenum _glIntFormat;
+	const GLenum _glFormat;
+	const GLenum _glType;
+
+	uint _width, _height;
+	uint _logicalWidth, _logicalHeight;
+	GLfloat _texCoords[4*2];
+
+	GLint _glFilter;
+
+	GLuint _glTexture;
+};
+
+/**
+ * Interface for OpenGL implementations of a 2D surface.
+ */
+class Surface {
+public:
+	Surface();
+	virtual ~Surface() {}
+
+	/**
+	 * Destroy OpenGL description of surface.
+	 */
+	virtual void destroy() = 0;
+
+	/**
+	 * Recreate OpenGL description of surface.
+	 */
+	virtual void recreate() = 0;
 
 	/**
 	 * Enable or disable linear texture filtering.
 	 *
 	 * @param enable true to enable and false to disable.
 	 */
-	void enableLinearFiltering(bool enable);
+	virtual void enableLinearFiltering(bool enable) = 0;
 
 	/**
-	 * Allocate texture space for the desired dimensions. This wraps any
-	 * handling of requirements for POT textures.
+	 * Allocate storage for surface.
 	 *
 	 * @param width  The desired logical width.
 	 * @param height The desired logical height.
 	 */
-	virtual void allocate(uint width, uint height);
+	virtual void allocate(uint width, uint height) = 0;
 
+	/**
+	 * Copy image data to the surface.
+	 *
+	 * The format of the input data needs to match the format returned by
+	 * getFormat.
+	 *
+	 * @param x        X coordinate of upper left corner to copy data to.
+	 * @param y        Y coordinate of upper left corner to copy data to.
+	 * @param w        Width of the image data to copy.
+	 * @param h        Height of the image data to copy.
+	 * @param src      Pointer to image data.
+	 * @param srcPitch The number of bytes in a row of the image data.
+	 */
 	void copyRectToTexture(uint x, uint y, uint w, uint h, const void *src, uint srcPitch);
 
+	/**
+	 * Fill the surface with a fixed color.
+	 *
+	 * @param color Color value in format returned by getFormat.
+	 */
 	void fill(uint32 color);
 
-	void draw(GLfloat x, GLfloat y, GLfloat w, GLfloat h);
-
 	void flagDirty() { _allDirty = true; }
-	bool isDirty() const { return _allDirty || !_dirtyArea.isEmpty(); }
-
-	uint getWidth() const { return _userPixelData.w; }
-	uint getHeight() const { return _userPixelData.h; }
+	virtual bool isDirty() const { return _allDirty || !_dirtyArea.isEmpty(); }
 
-	/**
-	 * @return The hardware format of the texture data.
-	 */
-	const Graphics::PixelFormat &getHardwareFormat() const { return _format; }
+	virtual uint getWidth() const = 0;
+	virtual uint getHeight() const = 0;
 
 	/**
 	 * @return The logical format of the texture data.
 	 */
-	virtual Graphics::PixelFormat getFormat() const { return _format; }
+	virtual Graphics::PixelFormat getFormat() const = 0;
 
-	virtual Graphics::Surface *getSurface() { return &_userPixelData; }
-	virtual const Graphics::Surface *getSurface() const { return &_userPixelData; }
+	virtual Graphics::Surface *getSurface() = 0;
+	virtual const Graphics::Surface *getSurface() const = 0;
 
 	/**
-	 * @return Whether the texture data is using a palette.
+	 * @return Whether the surface is having a palette.
 	 */
 	virtual bool hasPalette() const { return false; }
 
+	/**
+	 * Set color key for paletted textures.
+	 *
+	 * This needs to be called after any palette update affecting the color
+	 * key. Calling this multiple times will result in multiple color indices
+	 * to be treated as color keys.
+	 */
+	virtual void setColorKey(uint colorKey) {}
 	virtual void setPalette(uint start, uint colors, const byte *palData) {}
 
-	virtual void *getPalette() { return 0; }
-	virtual const void *getPalette() const { return 0; }
-
 	/**
-	 * Query texture related OpenGL information from the context. This only
-	 * queries the maximum texture size for now.
+	 * Update underlying OpenGL texture to reflect current state.
 	 */
-	static void queryTextureInformation();
+	virtual void updateGLTexture() = 0;
 
 	/**
-	 * @return Return the maximum texture dimensions supported.
+	 * Obtain underlying OpenGL texture.
 	 */
-	static GLint getMaximumTextureSize() { return _maxTextureSize; }
+	virtual const GLTexture &getGLTexture() const = 0;
 protected:
-	virtual void updateTexture();
+	void clearDirty() { _allDirty = false; _dirtyArea = Common::Rect(); }
 
 	Common::Rect getDirtyArea() const;
 private:
-	const GLenum _glIntFormat;
-	const GLenum _glFormat;
-	const GLenum _glType;
+	bool _allDirty;
+	Common::Rect _dirtyArea;
+};
+
+/**
+ * An OpenGL texture wrapper. It automatically takes care of all OpenGL
+ * texture handling issues and also provides access to the texture data.
+ */
+class Texture : public Surface {
+public:
+	/**
+	 * Create a new texture with the specific internal format.
+	 *
+	 * @param glIntFormat The internal format to use.
+	 * @param glFormat    The input format.
+	 * @param glType      The input type.
+	 * @param format      The format used for the texture input.
+	 */
+	Texture(GLenum glIntFormat, GLenum glFormat, GLenum glType, const Graphics::PixelFormat &format);
+	virtual ~Texture();
+
+	virtual void destroy();
+
+	virtual void recreate();
+
+	virtual void enableLinearFiltering(bool enable);
+
+	virtual void allocate(uint width, uint height);
+
+	virtual uint getWidth() const { return _userPixelData.w; }
+	virtual uint getHeight() const { return _userPixelData.h; }
+
+	/**
+	 * @return The logical format of the texture data.
+	 */
+	virtual Graphics::PixelFormat getFormat() const { return _format; }
+
+	virtual Graphics::Surface *getSurface() { return &_userPixelData; }
+	virtual const Graphics::Surface *getSurface() const { return &_userPixelData; }
+
+	virtual void updateGLTexture();
+	virtual const GLTexture &getGLTexture() const { return _glTexture; }
+protected:
 	const Graphics::PixelFormat _format;
 
-	GLint _glFilter;
-	GLuint _glTexture;
+private:
+	GLTexture _glTexture;
 
 	Graphics::Surface _textureData;
 	Graphics::Surface _userPixelData;
-
-	bool _allDirty;
-	Common::Rect _dirtyArea;
-	void clearDirty() { _allDirty = false; _dirtyArea = Common::Rect(); }
-
-	static GLint _maxTextureSize;
 };
 
 class TextureCLUT8 : public Texture {
@@ -154,21 +306,95 @@ public:
 
 	virtual bool hasPalette() const { return true; }
 
+	virtual void setColorKey(uint colorKey);
 	virtual void setPalette(uint start, uint colors, const byte *palData);
 
-	virtual void *getPalette() { return _palette; }
-	virtual const void *getPalette() const { return _palette; }
-
 	virtual Graphics::Surface *getSurface() { return &_clut8Data; }
 	virtual const Graphics::Surface *getSurface() const { return &_clut8Data; }
 
-protected:
+	virtual void updateGLTexture();
+private:
+	Graphics::Surface _clut8Data;
+	byte *_palette;
+};
+
+#if !USE_FORCED_GL
+class TextureRGB555 : public Texture {
+public:
+	TextureRGB555();
+	virtual ~TextureRGB555();
+
+	virtual void allocate(uint width, uint height);
+
+	virtual Graphics::PixelFormat getFormat() const;
+
+	virtual Graphics::Surface *getSurface() { return &_rgb555Data; }
+	virtual const Graphics::Surface *getSurface() const { return &_rgb555Data; }
+
 	virtual void updateTexture();
+private:
+	Graphics::Surface _rgb555Data;
+};
+#endif // !USE_FORCED_GL
+
+#if !USE_FORCED_GLES
+class TextureTarget;
+class CLUT8LookUpPipeline;
+
+class TextureCLUT8GPU : public Surface {
+public:
+	TextureCLUT8GPU();
+	virtual ~TextureCLUT8GPU();
+
+	virtual void destroy();
+
+	virtual void recreate();
 
+	virtual void enableLinearFiltering(bool enable);
+
+	virtual void allocate(uint width, uint height);
+
+	virtual bool isDirty() const { return _paletteDirty || Surface::isDirty(); }
+
+	virtual uint getWidth() const { return _userPixelData.w; }
+	virtual uint getHeight() const { return _userPixelData.h; }
+
+	virtual Graphics::PixelFormat getFormat() const;
+
+	virtual bool hasPalette() const { return true; }
+
+	virtual void setColorKey(uint colorKey);
+	virtual void setPalette(uint start, uint colors, const byte *palData);
+
+	virtual Graphics::Surface *getSurface() { return &_userPixelData; }
+	virtual const Graphics::Surface *getSurface() const { return &_userPixelData; }
+
+	virtual void updateGLTexture();
+	virtual const GLTexture &getGLTexture() const;
+
+	static bool isSupportedByContext() {
+		return g_context.shadersSupported
+		    && g_context.multitextureSupported
+		    && g_context.framebufferObjectSupported;
+	}
 private:
+	void lookUpColors();
+
+	GLTexture _clut8Texture;
+	GLTexture _paletteTexture;
+
+	TextureTarget *_target;
+	CLUT8LookUpPipeline *_clut8Pipeline;
+
+	GLfloat _clut8Vertices[4*2];
+
 	Graphics::Surface _clut8Data;
-	byte *_palette;
+	Graphics::Surface _userPixelData;
+
+	byte _palette[4 * 256];
+	bool _paletteDirty;
 };
+#endif // !USE_FORCED_GLES
 
 } // End of namespace OpenGL
 
diff --git a/backends/graphics/openglsdl/openglsdl-graphics.cpp b/backends/graphics/openglsdl/openglsdl-graphics.cpp
index 0d140ee4d7..7ea1860d93 100644
--- a/backends/graphics/openglsdl/openglsdl-graphics.cpp
+++ b/backends/graphics/openglsdl/openglsdl-graphics.cpp
@@ -45,6 +45,100 @@ OpenGLSdlGraphicsManager::OpenGLSdlGraphicsManager(uint desktopWidth, uint deskt
 	SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 16);
 	SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
 
+	// Setup proper SDL OpenGL context creation.
+#if SDL_VERSION_ATLEAST(2, 0, 0)
+	OpenGL::ContextType glContextType;
+
+	// Context version 1.4 is choosen arbitrarily based on what most shader
+	// extensions were written against.
+#define DEFAULT_GL_MAJOR 1
+#define DEFAULT_GL_MINOR 4
+
+#define DEFAULT_GLES_MAJOR 1
+#define DEFAULT_GLES_MINOR 1
+
+#define DEFAULT_GLES2_MAJOR 2
+#define DEFAULT_GLES2_MINOR 0
+
+#if USE_FORCED_GL
+	glContextType = OpenGL::kContextGL;
+	_glContextProfileMask = 0;
+	_glContextMajor = DEFAULT_GL_MAJOR;
+	_glContextMinor = DEFAULT_GL_MINOR;
+#elif USE_FORCED_GLES
+	glContextType = OpenGL::kContextGLES;
+	_glContextProfileMask = SDL_GL_CONTEXT_PROFILE_ES;
+	_glContextMajor = DEFAULT_GLES_MAJOR;
+	_glContextMinor = DEFAULT_GLES_MINOR;
+#elif USE_FORCED_GLES2
+	glContextType = OpenGL::kContextGLES2;
+	_glContextProfileMask = SDL_GL_CONTEXT_PROFILE_ES;
+	_glContextMajor = DEFAULT_GLES2_MAJOR;
+	_glContextMinor = DEFAULT_GLES2_MINOR;
+#else
+	bool noDefaults = false;
+
+	// Obtain the default GL(ES) context SDL2 tries to setup.
+	//
+	// Please note this might not actually be SDL2's defaults when multiple
+	// instances of this object have been created. But that is no issue
+	// because then we already set up what we want to use.
+	//
+	// In case no defaults are given we prefer OpenGL over OpenGL ES.
+	if (SDL_GL_GetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, &_glContextProfileMask) != 0) {
+		_glContextProfileMask = 0;
+		noDefaults = true;
+	}
+
+	if (SDL_GL_GetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, &_glContextMajor) != 0) {
+		noDefaults = true;
+	}
+
+	if (SDL_GL_GetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, &_glContextMinor) != 0) {
+		noDefaults = true;
+	}
+
+	if (noDefaults) {
+		if (_glContextProfileMask == SDL_GL_CONTEXT_PROFILE_ES) {
+			_glContextMajor = DEFAULT_GLES_MAJOR;
+			_glContextMinor = DEFAULT_GLES_MINOR;
+		} else {
+			_glContextProfileMask = 0;
+			_glContextMajor = DEFAULT_GL_MAJOR;
+			_glContextMinor = DEFAULT_GL_MINOR;
+		}
+	}
+
+	if (_glContextProfileMask == SDL_GL_CONTEXT_PROFILE_ES) {
+		if (_glContextMajor >= 2) {
+			glContextType = OpenGL::kContextGLES2;
+		} else {
+			glContextType = OpenGL::kContextGLES;
+		}
+	} else if (_glContextProfileMask == SDL_GL_CONTEXT_PROFILE_CORE) {
+		glContextType = OpenGL::kContextGL;
+
+		// Core profile does not allow legacy functionality, which we use.
+		// Thus we request a standard OpenGL context.
+		_glContextProfileMask = 0;
+		_glContextMajor = DEFAULT_GL_MAJOR;
+		_glContextMinor = DEFAULT_GL_MINOR;
+	} else {
+		glContextType = OpenGL::kContextGL;
+	}
+#undef DEFAULT_GL_MAJOR
+#undef DEFAULT_GL_MINOR
+#undef DEFAULT_GLES_MAJOR
+#undef DEFAULT_GLES_MINOR
+#undef DEFAULT_GLES2_MAJOR
+#undef DEFAULT_GLES2_MINOR
+#endif
+
+	setContextType(glContextType);
+#else
+	setContextType(OpenGL::kContextGL);
+#endif
+
 	// Retrieve a list of working fullscreen modes
 #if SDL_VERSION_ATLEAST(2, 0, 0)
 	const int numModes = SDL_GetNumDisplayModes(0);
@@ -100,6 +194,10 @@ OpenGLSdlGraphicsManager::OpenGLSdlGraphicsManager(uint desktopWidth, uint deskt
 }
 
 OpenGLSdlGraphicsManager::~OpenGLSdlGraphicsManager() {
+#if SDL_VERSION_ATLEAST(2, 0, 0)
+	notifyContextDestroy();
+	SDL_GL_DeleteContext(_glContext);
+#endif
 }
 
 void OpenGLSdlGraphicsManager::activateManager() {
@@ -210,20 +308,26 @@ Common::List<Graphics::PixelFormat> OpenGLSdlGraphicsManager::getSupportedFormat
 	// RGBA4444
 	formats.push_back(Graphics::PixelFormat(2, 4, 4, 4, 4, 12, 8, 4, 0));
 
-#ifndef USE_GLES
+#if !USE_FORCED_GLES && !USE_FORCED_GLES2
+#if !USE_FORCED_GL
+	if (!isGLESContext()) {
+#endif
 #ifdef SCUMM_LITTLE_ENDIAN
-	// RGBA8888
-	formats.push_back(Graphics::PixelFormat(4, 8, 8, 8, 8, 24, 16, 8, 0));
+		// RGBA8888
+		formats.push_back(Graphics::PixelFormat(4, 8, 8, 8, 8, 24, 16, 8, 0));
 #else
-	// ABGR8888
-	formats.push_back(Graphics::PixelFormat(4, 8, 8, 8, 8, 0, 8, 16, 24));
+		// ABGR8888
+		formats.push_back(Graphics::PixelFormat(4, 8, 8, 8, 8, 0, 8, 16, 24));
+#endif
+#if !USE_FORCED_GL
+	}
+#endif
 #endif
-	// ARGB8888, this should not be here, but Sword25 requires it. :-/
-	formats.push_back(Graphics::PixelFormat(4, 8, 8, 8, 8, 16, 8, 0, 24));
 
 	// RGB555, this is used by SCUMM HE 16 bit games.
+	// This is not natively supported by OpenGL ES implementations, we convert
+	// the pixel format internally.
 	formats.push_back(Graphics::PixelFormat(2, 5, 5, 5, 0, 10, 5, 0, 0));
-#endif
 
 	formats.push_back(Graphics::PixelFormat::createFormatCLUT8());
 
@@ -305,6 +409,10 @@ void OpenGLSdlGraphicsManager::refreshScreen() {
 #endif
 }
 
+void *OpenGLSdlGraphicsManager::getProcAddress(const char *name) const {
+	return SDL_GL_GetProcAddress(name);
+}
+
 bool OpenGLSdlGraphicsManager::setupMode(uint width, uint height) {
 	// In case we request a fullscreen mode we will use the mode the user
 	// has chosen last time or the biggest mode available.
@@ -378,6 +486,11 @@ bool OpenGLSdlGraphicsManager::setupMode(uint width, uint height) {
 		flags |= SDL_WINDOW_RESIZABLE;
 	}
 
+	// Request a OpenGL (ES) context we can use.
+	SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, _glContextProfileMask);
+	SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, _glContextMajor);
+	SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, _glContextMinor);
+
 	if (!_window->createWindow(width, height, flags)) {
 		// We treat fullscreen requests as a "hint" for now. This means in
 		// case it is not available we simply ignore it.
@@ -390,13 +503,6 @@ bool OpenGLSdlGraphicsManager::setupMode(uint width, uint height) {
 		}
 	}
 
-#ifdef USE_GLES
-	// SDL2 will create a GLES2 context by default, so this is needed for GLES1-profile
-	// functions to work.
-	SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_ES);
-	SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 1);
-	SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 1);
-#endif
 	_glContext = SDL_GL_CreateContext(_window->getSDLWindow());
 	if (!_glContext) {
 		return false;
diff --git a/backends/graphics/openglsdl/openglsdl-graphics.h b/backends/graphics/openglsdl/openglsdl-graphics.h
index 1552593575..51edcb4363 100644
--- a/backends/graphics/openglsdl/openglsdl-graphics.h
+++ b/backends/graphics/openglsdl/openglsdl-graphics.h
@@ -67,10 +67,13 @@ protected:
 	virtual bool loadVideoMode(uint requestedWidth, uint requestedHeight, const Graphics::PixelFormat &format);
 
 	virtual void refreshScreen();
+
+	virtual void *getProcAddress(const char *name) const;
 private:
 	bool setupMode(uint width, uint height);
 
 #if SDL_VERSION_ATLEAST(2, 0, 0)
+	int _glContextProfileMask, _glContextMajor, _glContextMinor;
 	SDL_GLContext _glContext;
 #else
 	uint32 _lastVideoModeLoad;
diff --git a/backends/module.mk b/backends/module.mk
index 3d412c031a..2e100d215d 100644
--- a/backends/module.mk
+++ b/backends/module.mk
@@ -3,6 +3,7 @@ MODULE := backends
 MODULE_OBJS := \
 	base-backend.o \
 	modular-backend.o \
+	audiocd/audiocd-stream.o \
 	audiocd/default/default-audiocd.o \
 	events/default/default-events.o \
 	fs/abstract-fs.o \
@@ -52,10 +53,16 @@ endif
 # OpenGL specific source files.
 ifdef USE_OPENGL
 MODULE_OBJS += \
+	graphics/opengl/context.o \
 	graphics/opengl/debug.o \
-	graphics/opengl/extensions.o \
+	graphics/opengl/framebuffer.o \
 	graphics/opengl/opengl-graphics.o \
-	graphics/opengl/texture.o
+	graphics/opengl/shader.o \
+	graphics/opengl/texture.o \
+	graphics/opengl/pipelines/clut8.o \
+	graphics/opengl/pipelines/fixed.o \
+	graphics/opengl/pipelines/pipeline.o \
+	graphics/opengl/pipelines/shader.o
 endif
 
 # SDL specific source files.
@@ -97,6 +104,7 @@ endif
 
 ifdef MACOSX
 MODULE_OBJS += \
+	audiocd/macosx/macosx-audiocd.o \
 	midi/coreaudio.o \
 	midi/coremidi.o \
 	updates/macosx/macosx-updates.o \
@@ -105,6 +113,7 @@ endif
 
 ifdef WIN32
 MODULE_OBJS += \
+	audiocd/win32/win32-audiocd.o \
 	fs/windows/windows-fs.o \
 	fs/windows/windows-fs-factory.o \
 	midi/windows.o \
@@ -128,6 +137,11 @@ MODULE_OBJS += \
 	events/ps3sdl/ps3sdl-events.o
 endif
 
+ifdef USE_LINUXCD
+MODULE_OBJS += \
+	audiocd/linux/linux-audiocd.o
+endif
+
 ifeq ($(BACKEND),tizen)
 MODULE_OBJS += \
 	timer/tizen/timer.o
diff --git a/backends/platform/dc/dc.h b/backends/platform/dc/dc.h
index d8ab549c3a..6cd938ec9c 100644
--- a/backends/platform/dc/dc.h
+++ b/backends/platform/dc/dc.h
@@ -57,21 +57,16 @@ class DCHardware {
 };
 
 class DCCDManager : public DefaultAudioCDManager {
-  // Initialize the specified CD drive for audio playback.
-  bool openCD(int drive);
-
-  // Poll cdrom status
-  // Returns true if cd audio is playing
-  bool pollCD();
-
-  // Play cdrom audio track
-  void playCD(int track, int num_loops, int start_frame, int duration);
+public:
+	// Poll cdrom status
+	// Returns true if cd audio is playing
+	bool isPlaying() const;
 
-  // Stop cdrom audio track
-  void stopCD();
+	// Play cdrom audio track
+	bool play(int track, int numLoops, int startFrame, int duration, bool onlyEmulate = false);
 
-  // Update cdrom audio status
-  void updateCD();
+	// Stop cdrom audio track
+	void stop();
 };
 
 class OSystem_Dreamcast : private DCHardware, public EventsBaseBackend, public PaletteManager, public FilesystemFactory
diff --git a/backends/platform/dc/dcmain.cpp b/backends/platform/dc/dcmain.cpp
index eede796991..c84aef9c47 100644
--- a/backends/platform/dc/dcmain.cpp
+++ b/backends/platform/dc/dcmain.cpp
@@ -90,43 +90,53 @@ static bool find_track(int track, int &first_sec, int &last_sec)
   return false;
 }
 
-void DCCDManager::playCD(int track, int num_loops, int start_frame, int duration)
-{
-  int first_sec, last_sec;
+bool DCCDManager::play(int track, int numLoops, int startFrame, int duration, bool onlyEmulate) {
+	DefaultAudioCDManager::play(track, numLoops, startFrame, duration, onlyEmulate);
+
+	// If we're playing now return here
+	if (isPlaying()) {
+		return true;
+	}
+
+	// If we should only play emulated tracks stop here.
+	if (onlyEmulate) {
+		return false;
+	}
+
+	int firstSec, lastSec;
 #if 1
-  if (num_loops)
-    --num_loops;
+	if (numLoops)
+		--numLoops;
 #endif
-  if (num_loops>14) num_loops=14;
-  else if (num_loops<0) num_loops=15; // infinity
-  if (!find_track(track, first_sec, last_sec))
-    return;
-  if (duration)
-    last_sec = first_sec + start_frame + duration;
-  first_sec += start_frame;
-  play_cdda_sectors(first_sec, last_sec, num_loops);
-}
 
-void DCCDManager::stopCD()
-{
-  stop_cdda();
-}
+	if (numLoops > 14)
+		numLoops = 14;
+	else if (numLoops < 0)
+		numLoops = 15; // infinity
 
-bool DCCDManager::pollCD()
-{
-  extern int getCdState();
-  return getCdState() == 3;
+	if (!find_track(track, firstSec, lastSec))
+		return false;
+
+	if (duration)
+		lastSec = firstSec + startFrame + duration;
+
+	firstSec += startFrame;
+	play_cdda_sectors(firstSec, lastSec, numLoops);
+
+	return true;
 }
 
-void DCCDManager::updateCD()
-{
-  // Dummy.  The CD drive takes care of itself.
+void DCCDManager::stop() {
+	DefaultAudioCDManager::stop();
+	stop_cdda();
 }
 
-bool DCCDManager::openCD(int drive)
-{
-  // Dummy.
-  return true;
+bool DCCDManager::isPlaying() const {
+	if (DefaultAudioCDManager::isPlaying())
+		return true;
+
+	extern int getCdState();
+	return getCdState() == 3;
 }
 
 void OSystem_Dreamcast::setWindowCaption(const char *caption)
diff --git a/backends/platform/dingux/README.GCW0 b/backends/platform/dingux/README.GCW0
index 1875e5323a..1b7e30e266 100644
--- a/backends/platform/dingux/README.GCW0
+++ b/backends/platform/dingux/README.GCW0
@@ -24,3 +24,12 @@ It's pretty simple if you are running Linux on an x86/amd64 machine:
 3. Run backends/platform/dingux/build.gcw0.sh script
 4. Copy the resulting file scummvm.opk to your device
 5. Enjoy
+
+Troubleshooting
+===============
+In case you need to submit a bugreport, you may find the log file at the
+following path:
+
+     /var/tmp/scummvm.log
+
+The log file is being overwritten at every ScummVM run.
diff --git a/backends/platform/dingux/build.gcw0.sh b/backends/platform/dingux/build.gcw0.sh
index c1a4fa29c2..7a31d4fd27 100755
--- a/backends/platform/dingux/build.gcw0.sh
+++ b/backends/platform/dingux/build.gcw0.sh
@@ -3,4 +3,4 @@
 export PATH=/opt/gcw0-toolchain/usr/bin:$PATH
 
 # Disable high resolution engines since we have 320x240 hardware
-./configure --host=gcw0 --enable-plugins --default-dynamic --enable-release  --disable-mt32emu --disable-hq-scalers && make -j6 gcw-opk && ls -l scummvm.opk
+./configure --host=gcw0 --enable-plugins --default-dynamic --enable-release && make -j6 gcw-opk && ls -l scummvm.opk
diff --git a/backends/platform/dingux/dingux.mk b/backends/platform/dingux/dingux.mk
index 56c26c3be1..dc87e41241 100644
--- a/backends/platform/dingux/dingux.mk
+++ b/backends/platform/dingux/dingux.mk
@@ -59,19 +59,20 @@ endif
 	echo >> $(gcw0_bundle)/README.man.txt
 	echo '[General README]' >> $(gcw0_bundle)/README.man.txt
 	echo >> $(gcw0_bundle)/README.man.txt
-	cat README >> $(gcw0_bundle)/README.man.txt
+	cat $(srcdir)/README | sed -e 's/\[/⟦/g' -e 's/\]/⟧/g' -e '/^1\.1)/,$$ s/^[0-9][0-9]*\.[0-9][0-9]*.*/\[&\]/' >> $(gcw0_bundle)/README.man.txt
+
 
 #	$(CP) GeneralUser\ GS\ FluidSynth\ v1.44.sf2 $(gcw0_bundle)/
 
 gcw0-opk-unstripped: $(gcw0_bundle)
 	$(CP) $(PLUGINS) $(gcw0_bundle)/plugins/
 	$(CP) $(EXECUTABLE) $(gcw0_bundle)/scummvm
-	./dists/gcw0/opk_make.sh -d $(gcw0_bundle) -o scummvm
+	$(srcdir)/dists/gcw0/opk_make.sh -d $(gcw0_bundle) -o scummvm
 
 gcw-opk: $(gcw0_bundle)
 	$(STRIP) $(gcw0_bundle)/plugins/*
 	$(STRIP) $(gcw0_bundle)/scummvm
-	./dists/gcw0/opk_make.sh -d $(gcw0_bundle) -o scummvm
+	$(srcdir)/dists/gcw0/opk_make.sh -d $(gcw0_bundle) -o scummvm
 
 GeneralUser_GS_1.44-FluidSynth.zip:
 	curl -s http://www.scummvm.org/frs/extras/SoundFont/GeneralUser_GS_1.44-FluidSynth.zip -o GeneralUser_GS_1.44-FluidSynth.zip
diff --git a/backends/platform/ds/arm9/source/osystem_ds.cpp b/backends/platform/ds/arm9/source/osystem_ds.cpp
index c53f57523d..f23192cd9d 100644
--- a/backends/platform/ds/arm9/source/osystem_ds.cpp
+++ b/backends/platform/ds/arm9/source/osystem_ds.cpp
@@ -715,7 +715,7 @@ void OSystem_DS::deleteMutex(MutexRef mutex) {
 // and should be replaced by an AudioCDManager subclass,
 // see backends/audiocd/ and common/system.h
 
-bool OSystem_DS::openCD(int drive) {
+bool OSystem_DS::openCD() {
 	return DS::CD::checkCD();
 }
 
diff --git a/backends/platform/ds/arm9/source/osystem_ds.h b/backends/platform/ds/arm9/source/osystem_ds.h
index f4dbac66f7..9f73e125c2 100644
--- a/backends/platform/ds/arm9/source/osystem_ds.h
+++ b/backends/platform/ds/arm9/source/osystem_ds.h
@@ -130,7 +130,8 @@ public:
 	// FIXME/TODO: The CD API as follows is *obsolete*
 	// and should be replaced by an AudioCDManager subclass,
 	// see backends/audiocd/ and common/system.h
-	virtual bool openCD(int drive);
+	virtual bool openCD();
+	virtual void closeCD() {}
 	virtual bool pollCD();
 	virtual void playCD(int track, int num_loops, int start_frame, int duration);
 	virtual void stopCD();
diff --git a/backends/platform/sdl/macosx/macosx.cpp b/backends/platform/sdl/macosx/macosx.cpp
index 38a2d7441c..7652c0d833 100644
--- a/backends/platform/sdl/macosx/macosx.cpp
+++ b/backends/platform/sdl/macosx/macosx.cpp
@@ -27,9 +27,10 @@
 
 #ifdef MACOSX
 
-#include "backends/platform/sdl/macosx/macosx.h"
+#include "backends/audiocd/macosx/macosx-audiocd.h"
 #include "backends/mixer/doublebuffersdl/doublebuffersdl-mixer.h"
 #include "backends/platform/sdl/macosx/appmenu_osx.h"
+#include "backends/platform/sdl/macosx/macosx.h"
 #include "backends/updates/macosx/macosx-updates.h"
 #include "backends/taskbar/macosx/macosx-taskbar.h"
 
@@ -170,4 +171,8 @@ Common::String OSystem_MacOSX::getSystemLanguage() const {
 #endif // USE_DETECTLANG
 }
 
+AudioCDManager *OSystem_MacOSX::createAudioCDManager() {
+	return createMacOSXAudioCDManager();
+}
+
 #endif
diff --git a/backends/platform/sdl/macosx/macosx.h b/backends/platform/sdl/macosx/macosx.h
index c8b4beaeec..6905284a5f 100644
--- a/backends/platform/sdl/macosx/macosx.h
+++ b/backends/platform/sdl/macosx/macosx.h
@@ -38,6 +38,11 @@ public:
 	virtual void init();
 	virtual void initBackend();
 	virtual void addSysArchivesToSearchSet(Common::SearchSet &s, int priority = 0);
+
+protected:
+	// Override createAudioCDManager() to get our Mac-specific
+	// version.
+	virtual AudioCDManager *createAudioCDManager();
 };
 
 #endif
diff --git a/backends/platform/sdl/posix/posix.cpp b/backends/platform/sdl/posix/posix.cpp
index 525c74a91a..e2a642b288 100644
--- a/backends/platform/sdl/posix/posix.cpp
+++ b/backends/platform/sdl/posix/posix.cpp
@@ -36,6 +36,11 @@
 #include "backends/fs/posix/posix-fs.h"
 #include "backends/taskbar/unity/unity-taskbar.h"
 
+#ifdef USE_LINUXCD
+#include "backends/audiocd/linux/linux-audiocd.h"
+#endif
+
+#include <errno.h>
 #include <sys/stat.h>
 #include <sys/wait.h>
 #include <unistd.h>
@@ -239,4 +244,12 @@ bool OSystem_POSIX::displayLogFile() {
 }
 
 
+AudioCDManager *OSystem_POSIX::createAudioCDManager() {
+#ifdef USE_LINUXCD
+	return createLinuxAudioCDManager();
+#else
+	return OSystem_SDL::createAudioCDManager();
+#endif
+}
+
 #endif
diff --git a/backends/platform/sdl/posix/posix.h b/backends/platform/sdl/posix/posix.h
index f67515ddb3..0514d30191 100644
--- a/backends/platform/sdl/posix/posix.h
+++ b/backends/platform/sdl/posix/posix.h
@@ -59,6 +59,8 @@ protected:
 	virtual Common::String getDefaultConfigFileName();
 
 	virtual Common::WriteStream *createLogFile();
+
+	virtual AudioCDManager *createAudioCDManager();
 };
 
 #endif
diff --git a/backends/platform/sdl/sdl.cpp b/backends/platform/sdl/sdl.cpp
index fffb9d56d9..c55753194b 100644
--- a/backends/platform/sdl/sdl.cpp
+++ b/backends/platform/sdl/sdl.cpp
@@ -245,15 +245,7 @@ void OSystem_SDL::initBackend() {
 		_timerManager = new SdlTimerManager();
 #endif
 
-	if (_audiocdManager == 0) {
-		// Audio CD support was removed with SDL 2.0
-#if SDL_VERSION_ATLEAST(2, 0, 0)
-		_audiocdManager = new DefaultAudioCDManager();
-#else
-		_audiocdManager = new SdlAudioCDManager();
-#endif
-
-	}
+	_audiocdManager = createAudioCDManager();
 
 	// Setup a custom program icon.
 	_window->setupIcon();
@@ -491,6 +483,15 @@ Common::TimerManager *OSystem_SDL::getTimerManager() {
 #endif
 }
 
+AudioCDManager *OSystem_SDL::createAudioCDManager() {
+	// Audio CD support was removed with SDL 2.0
+#if SDL_VERSION_ATLEAST(2, 0, 0)
+	return new DefaultAudioCDManager();
+#else
+	return new SdlAudioCDManager();
+#endif
+}
+
 #ifdef USE_OPENGL
 
 const OSystem::GraphicsMode *OSystem_SDL::getSupportedGraphicsModes() const {
diff --git a/backends/platform/sdl/sdl.h b/backends/platform/sdl/sdl.h
index 5ee56d0568..c93c8308a7 100644
--- a/backends/platform/sdl/sdl.h
+++ b/backends/platform/sdl/sdl.h
@@ -104,6 +104,11 @@ protected:
 	 */
 	virtual void initSDL();
 
+	/**
+	 * Create the audio CD manager
+	 */
+	virtual AudioCDManager *createAudioCDManager();
+
 	// Logging
 	virtual Common::WriteStream *createLogFile() { return 0; }
 	Backends::Log::Log *_logger;
diff --git a/backends/platform/sdl/win32/win32.cpp b/backends/platform/sdl/win32/win32.cpp
index 0f70c00b40..fbab7eb782 100644
--- a/backends/platform/sdl/win32/win32.cpp
+++ b/backends/platform/sdl/win32/win32.cpp
@@ -35,6 +35,7 @@
 #include "common/error.h"
 #include "common/textconsole.h"
 
+#include "backends/audiocd/win32/win32-audiocd.h"
 #include "backends/platform/sdl/win32/win32.h"
 #include "backends/platform/sdl/win32/win32-window.h"
 #include "backends/saves/windows/windows-saves.h"
@@ -318,4 +319,8 @@ void OSystem_Win32::addSysArchivesToSearchSet(Common::SearchSet &s, int priority
 	OSystem_SDL::addSysArchivesToSearchSet(s, priority);
 }
 
+AudioCDManager *OSystem_Win32::createAudioCDManager() {
+	return createWin32AudioCDManager();
+}
+
 #endif
diff --git a/backends/platform/sdl/win32/win32.h b/backends/platform/sdl/win32/win32.h
index 473e78ff0b..ca0843e834 100644
--- a/backends/platform/sdl/win32/win32.h
+++ b/backends/platform/sdl/win32/win32.h
@@ -49,6 +49,10 @@ protected:
 
 	virtual Common::String getDefaultConfigFileName();
 	virtual Common::WriteStream *createLogFile();
+
+	// Override createAudioCDManager() to get our Mac-specific
+	// version.
+	virtual AudioCDManager *createAudioCDManager();
 };
 
 #endif
diff --git a/backends/platform/symbian/src/portdefs.h b/backends/platform/symbian/src/portdefs.h
index f9da09d3eb..e2465e4767 100644
--- a/backends/platform/symbian/src/portdefs.h
+++ b/backends/platform/symbian/src/portdefs.h
@@ -65,7 +65,8 @@ typedef signed long int int32;
 #undef remove
 #endif
 
-#define SMALL_SCREEN_DEVICE
+#define GUI_ONLY_FULLSCREEN
+#define GUI_ENABLE_KEYSDIALOG
 
 #define DISABLE_COMMAND_LINE
 #define USE_RGB_COLOR
diff --git a/backends/platform/tizen/graphics.cpp b/backends/platform/tizen/graphics.cpp
index 759c4e519d..61dbfc38fb 100644
--- a/backends/platform/tizen/graphics.cpp
+++ b/backends/platform/tizen/graphics.cpp
@@ -56,6 +56,7 @@ result TizenGraphicsManager::Construct() {
 	loadEgl();
 
 	// Notify the OpenGL code about our context.
+	setContextType(OpenGL::kContextGLES);
 
 	// We default to RGB565 and RGBA5551 which is closest to the actual output
 	// mode we setup.
@@ -206,3 +207,7 @@ bool TizenGraphicsManager::loadVideoMode(uint requestedWidth, uint requestedHeig
 void TizenGraphicsManager::refreshScreen() {
 	eglSwapBuffers(_eglDisplay, _eglSurface);
 }
+
+void *TizenGraphicsManager::getProcAddress(const char *name) const {
+	return eglGetProcAddress(name);
+}
diff --git a/backends/platform/tizen/graphics.h b/backends/platform/tizen/graphics.h
index 1522d66bbe..1798b078d8 100644
--- a/backends/platform/tizen/graphics.h
+++ b/backends/platform/tizen/graphics.h
@@ -63,6 +63,8 @@ protected:
 
 	void refreshScreen();
 
+	void *getProcAddress(const char *name) const;
+
 	const Graphics::Font *getFontOSD();
 
 private:
diff --git a/backends/platform/wince/portdefs.h b/backends/platform/wince/portdefs.h
index 3304ee0893..c74fc39169 100644
--- a/backends/platform/wince/portdefs.h
+++ b/backends/platform/wince/portdefs.h
@@ -30,7 +30,8 @@
 // Missing string/stdlib/assert declarations for WinCE 2.xx
 #if _WIN32_WCE < 300
 
-	#define SMALL_SCREEN_DEVICE
+	#define GUI_ONLY_FULLSCREEN
+	#define GUI_ENABLE_KEYSDIALOG
 
 	void *calloc(size_t n, size_t s);
 	int isalnum(int c);
diff --git a/backends/taskbar/macosx/dockplugin/dockplugin.m b/backends/taskbar/macosx/dockplugin/dockplugin.m
new file mode 100644
index 0000000000..9d864ef2a8
--- /dev/null
+++ b/backends/taskbar/macosx/dockplugin/dockplugin.m
@@ -0,0 +1,125 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include <Cocoa/Cocoa.h>
+
+@interface ScummVMDockTilePlugIn : NSObject <NSDockTilePlugIn> {
+	NSMenu *recentGamesMenu;
+}
+@end
+
+@interface StartGameMenuItem : NSMenuItem {
+	NSString *game;
+}
+- (IBAction) startGame;
+- (NSMenuItem*)initWithGame:(NSString *)gameId description:(NSString*)desc icon:(NSString*)iconFile;
+@end
+
+@implementation ScummVMDockTilePlugIn
+
+- (id)init {
+	self = [super init];
+	if (self) {
+		recentGamesMenu = nil;
+	}
+	return self;
+}
+
+- (void)dealloc {
+	[recentGamesMenu release];
+	[super dealloc];
+}
+
+
+- (void)setDockTile:(NSDockTile *)dockTile {
+}
+
+- (NSMenu*)dockMenu {
+	// Get the list or recent games
+	CFPreferencesAppSynchronize(CFSTR("org.scummvm.scummvm"));
+	NSArray *array = CFPreferencesCopyAppValue(CFSTR("recentGames"), CFSTR("org.scummvm.scummvm"));
+	if (array == nil)
+		return nil;
+
+	// Create the menu
+	if (recentGamesMenu == nil)
+		recentGamesMenu = [[NSMenu alloc] init];
+	else
+		[recentGamesMenu removeAllItems];
+
+	NSEnumerator *enumerator = [array objectEnumerator];
+	NSDictionary *recentGame;
+	while (recentGame = [enumerator nextObject]) {
+		NSString *gameId = [recentGame valueForKey:@"game"];
+		NSString *desc = [recentGame valueForKey:@"description"];
+		NSString *iconFile = [recentGame valueForKey:@"icon"];
+		
+		StartGameMenuItem *menuItem = [[StartGameMenuItem alloc] initWithGame:gameId description:desc icon:iconFile];
+		[recentGamesMenu addItem:menuItem];
+		[menuItem release];
+	}
+
+	return recentGamesMenu;
+}
+
+@end
+
+@implementation StartGameMenuItem
+
+- (NSMenuItem*)initWithGame:(NSString *)gameId description:(NSString*)desc icon:(NSString*)iconFile {
+	self = [super initWithTitle:(desc == nil ? gameId : desc) action:@selector(startGame) keyEquivalent:@""];
+	[self setTarget:self];
+	
+	if (iconFile != nil) {
+		NSImage *image = [[NSImage alloc] initWithContentsOfFile:iconFile];
+		[self setImage:image];
+		[image release];
+	}
+
+	game = gameId;
+	[game retain];
+	
+	return self;
+}
+
+- (void)dealloc {
+	[game release];
+	[super dealloc];
+}
+
+- (IBAction) startGame {
+	NSLog(@"Starting Game %@...", game);
+	
+	NSString *scummVMPath = [[NSWorkspace sharedWorkspace] absolutePathForAppBundleWithIdentifier:@"org.scummvm.scummvm"];
+	if (scummVMPath == nil) {
+		NSLog(@"Cannot find ScummVM.app!");
+		return;
+	}
+	// Start ScummVM.app with the game ID as argument
+	NSURL *url = [NSURL fileURLWithPath:scummVMPath];
+	NSMutableDictionary *args = [[NSMutableDictionary alloc] init];
+	[args setObject:[NSArray arrayWithObject:game] forKey:NSWorkspaceLaunchConfigurationArguments];
+	[[NSWorkspace sharedWorkspace] launchApplicationAtURL:url options:NSWorkspaceLaunchDefault configuration:args error:nil];
+	[args release];
+}
+
+@end
diff --git a/backends/taskbar/macosx/macosx-taskbar.h b/backends/taskbar/macosx/macosx-taskbar.h
index 5d5b9d02cd..55bb97a691 100644
--- a/backends/taskbar/macosx/macosx-taskbar.h
+++ b/backends/taskbar/macosx/macosx-taskbar.h
@@ -37,6 +37,7 @@ public:
 	virtual void setProgressValue(int completed, int total);
 	virtual void setProgressState(TaskbarProgressState state);
 	virtual void setCount(int count);
+	virtual void addRecent(const Common::String &name, const Common::String &description);
 	virtual void notifyError();
 	virtual void clearError();
 	
diff --git a/backends/taskbar/macosx/macosx-taskbar.mm b/backends/taskbar/macosx/macosx-taskbar.mm
index ae087dfb85..577320b79d 100644
--- a/backends/taskbar/macosx/macosx-taskbar.mm
+++ b/backends/taskbar/macosx/macosx-taskbar.mm
@@ -29,9 +29,6 @@
 // NSDockTile was introduced with Mac OS X 10.5.
 // Try provide backward compatibility by avoiding NSDockTile symbols.
 
-// TODO: Implement recent list, maybe as a custom menu on dock tile when app is not running
-// See Dock Tile plug-in at https://developer.apple.com/library/mac/documentation/Carbon/Conceptual/customizing_docktile/CreatingaDockTilePlug-in/CreatingaDockTilePlug-in.html
-
 #include "backends/taskbar/macosx/macosx-taskbar.h"
 #include "common/config-manager.h"
 #include "common/file.h"
@@ -39,6 +36,9 @@
 #include <AppKit/NSApplication.h>
 #include <AppKit/NSImage.h>
 #include <Foundation/NSString.h>
+#include <Foundation/NSDictionary.h>
+#include <Foundation/NSArray.h>
+#include <Foundation/NSUserDefaults.h>
 #include <AppKit/NSImageView.h>
 #include <AppKit/NSColor.h>
 #include <AppKit/NSBezierPath.h>
@@ -120,7 +120,7 @@ void MacOSXTaskbarManager::setOverlayIcon(const Common::String &name, const Comm
 	initOverlayIconView();
 
 	CFStringRef imageFile = CFStringCreateWithCString(0, path.c_str(), kCFStringEncodingASCII);
-	NSImage* image = [[NSImage alloc] initWithContentsOfFile:(NSString *)imageFile];
+	NSImage *image = [[NSImage alloc] initWithContentsOfFile:(NSString *)imageFile];
 	[_overlayIconView setImage:image];
 	[image release];
 	CFRelease(imageFile);
@@ -234,5 +234,64 @@ return (path); \
 	return "";
 }
 
+void MacOSXTaskbarManager::addRecent(const Common::String &name, const Common::String &description) {
+	//warning("[MacOSXTaskbarManager::addRecent] Adding recent list entry: %s (%s)", name.c_str(), description.c_str());
+	
+	if (_dockTile == nil)
+		return;
+	
+	// Store the game, description and icon in user preferences.
+	// The NSDockTilePlugin will retrieve them there to list them in the dock tile menu.
+	
+	CFStringRef gameName = CFStringCreateWithCString(0, name.c_str(), kCFStringEncodingASCII);
+	CFStringRef desc = CFStringCreateWithCString(0, description.c_str(), kCFStringEncodingASCII);
+	
+	// First build the dictionary for this game.
+	NSMutableDictionary *dict = [[NSMutableDictionary  alloc] init];
+	[dict setObject:(NSString *)gameName forKey:@"game"];
+	[dict setObject:(NSString *)desc forKey:@"description"];
+	
+	// Icon
+	Common::String iconPath = getIconPath(name);
+	if (!iconPath.empty()) {
+		CFStringRef icon = CFStringCreateWithCString(0, iconPath.c_str(), kCFStringEncodingASCII);
+		[dict setObject:(NSString *)icon forKey:@"icon"];
+		CFRelease(icon);
+	}
+	
+	// Retrieve the current list of recent items and update it.
+	NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
+	NSArray *oldArray = [defaults arrayForKey:@"recentGames"];
+	if (oldArray == nil) {
+		[defaults setObject:[NSArray arrayWithObject:dict] forKey:@"recentGames"];
+	} else {
+		NSMutableArray *newArray = [[NSMutableArray alloc] initWithArray:oldArray];
+		// Insert the new game at the start
+		[newArray insertObject:dict atIndex:0];
+		// If the game was already present in the array, remove it
+		for (int i = 1 ; i < [newArray count] ; ++i) {
+			NSDictionary *oldDict = [newArray objectAtIndex:i];
+			if (oldDict == nil)
+				continue;
+			NSString *oldGame = [oldDict valueForKey:@"game"];
+			if (oldGame != nil && [oldGame isEqualToString:(NSString*)gameName]) {
+				[newArray removeObjectAtIndex:i];
+				break;
+			}
+		}
+		// And make sure we limit the size of the array to 5 games
+		if ([newArray count] > 5)
+			[newArray removeLastObject];
+		[defaults setObject:newArray forKey:@"recentGames"];
+		[newArray release];
+	}
+
+	// Finally release the dictionary
+	[dict release];
+	CFRelease(gameName);
+	CFRelease(desc);
+}
+
+
 
 #endif
diff --git a/backends/updates/macosx/macosx-updates.h b/backends/updates/macosx/macosx-updates.h
index fd2d1f46f5..6fb9af7712 100644
--- a/backends/updates/macosx/macosx-updates.h
+++ b/backends/updates/macosx/macosx-updates.h
@@ -39,8 +39,10 @@ public:
 	virtual void setAutomaticallyChecksForUpdates(UpdateState state);
 	virtual UpdateState getAutomaticallyChecksForUpdates();
 
-	virtual void setUpdateCheckInterval(UpdateInterval interval);
-	virtual UpdateInterval getUpdateCheckInterval();
+	virtual void setUpdateCheckInterval(int interval);
+	virtual int getUpdateCheckInterval();
+
+	virtual bool getLastUpdateCheckTimeAndDate(TimeDate &t);
 };
 
 #endif
diff --git a/backends/updates/macosx/macosx-updates.mm b/backends/updates/macosx/macosx-updates.mm
index a94f1c21fd..db9362a459 100644
--- a/backends/updates/macosx/macosx-updates.mm
+++ b/backends/updates/macosx/macosx-updates.mm
@@ -23,14 +23,18 @@
 // Disable symbol overrides so that we can use system headers.
 #define FORBIDDEN_SYMBOL_ALLOW_ALL
 
+#include "common/system.h"
 #include "backends/updates/macosx/macosx-updates.h"
 
 #ifdef USE_SPARKLE
 #include "common/translation.h"
+#include "common/config-manager.h"
 
 #include <Cocoa/Cocoa.h>
 #include <Sparkle/Sparkle.h>
 
+#include <AvailabilityMacros.h>
+
 SUUpdater *sparkleUpdater;
 
 /**
@@ -45,14 +49,22 @@ SUUpdater *sparkleUpdater;
  *
  */
 MacOSXUpdateManager::MacOSXUpdateManager() {
+	NSBundle* mainBundle = [NSBundle mainBundle];
+
+	NSString *version = [mainBundle objectForInfoDictionaryKey:(__bridge NSString *)kCFBundleVersionKey];
+	if (!version || [version isEqualToString:@""]) {
+		warning("Running not in bundle, skipping Sparkle initialization");
+
+		sparkleUpdater = nullptr;
+		return;
+	}
+
 	NSMenuItem *menuItem = [[NSApp mainMenu] itemAtIndex:0];
 	NSMenu *applicationMenu = [menuItem submenu];
 
 	// Init Sparkle
 	sparkleUpdater = [SUUpdater sharedUpdater];
 
-	NSBundle* mainBundle = [NSBundle mainBundle];
-
 	NSString* feedbackURL = [mainBundle objectForInfoDictionaryKey:@"SUFeedURL"];
 
 	// Set appcast URL
@@ -74,11 +86,13 @@ MacOSXUpdateManager::MacOSXUpdateManager() {
 	// Finally give up our references to the objects
 	[menuItem release];
 
-	// Enable automatic update checking once a day (alternatively use
-	// checkForUpdates() here to check for updates on every startup)
-	// TODO: Should be removed when an update settings gui is implemented
-	setAutomaticallyChecksForUpdates(kUpdateStateEnabled);
-	setUpdateCheckInterval(kUpdateIntervalOneDay);
+	if (!ConfMan.hasKey("updates_check")
+			|| ConfMan.getInt("updates_check") == Common::UpdateManager::kUpdateIntervalNotSupported) {
+		setAutomaticallyChecksForUpdates(kUpdateStateDisabled);
+	} else {
+		setAutomaticallyChecksForUpdates(kUpdateStateEnabled);
+		setUpdateCheckInterval(normalizeInterval(ConfMan.getInt("updates_check")));
+	}
 }
 
 MacOSXUpdateManager::~MacOSXUpdateManager() {
@@ -86,6 +100,9 @@ MacOSXUpdateManager::~MacOSXUpdateManager() {
 }
 
 void MacOSXUpdateManager::checkForUpdates() {
+	if (sparkleUpdater == nullptr)
+		return;
+
 	[sparkleUpdater checkForUpdatesInBackground];
 }
 
@@ -93,24 +110,38 @@ void MacOSXUpdateManager::setAutomaticallyChecksForUpdates(UpdateManager::Update
 	if (state == kUpdateStateNotSupported)
 		return;
 
+	if (sparkleUpdater == nullptr)
+		return;
+
 	[sparkleUpdater setAutomaticallyChecksForUpdates:(state == kUpdateStateEnabled ? YES : NO)];
 }
 
 Common::UpdateManager::UpdateState MacOSXUpdateManager::getAutomaticallyChecksForUpdates() {
+	if (sparkleUpdater == nullptr)
+		return kUpdateStateDisabled;
+
 	if ([sparkleUpdater automaticallyChecksForUpdates])
 		return kUpdateStateEnabled;
 	else
 		return kUpdateStateDisabled;
 }
 
-void MacOSXUpdateManager::setUpdateCheckInterval(UpdateInterval interval) {
+void MacOSXUpdateManager::setUpdateCheckInterval(int interval) {
+	if (sparkleUpdater == nullptr)
+		return;
+
 	if (interval == kUpdateIntervalNotSupported)
 		return;
 
+	interval = normalizeInterval(interval);
+
 	[sparkleUpdater setUpdateCheckInterval:(NSTimeInterval)interval];
 }
 
-Common::UpdateManager::UpdateInterval MacOSXUpdateManager::getUpdateCheckInterval() {
+int MacOSXUpdateManager::getUpdateCheckInterval() {
+	if (sparkleUpdater == nullptr)
+		return kUpdateIntervalOneDay;
+
 	// This is kind of a hack but necessary, as the value stored by Sparkle
 	// might have been changed outside of ScummVM (in which case we return the
 	// default interval of one day)
@@ -128,4 +159,30 @@ Common::UpdateManager::UpdateInterval MacOSXUpdateManager::getUpdateCheckInterva
 	}
 }
 
+bool MacOSXUpdateManager::getLastUpdateCheckTimeAndDate(TimeDate &t) {
+	if (sparkleUpdater == nullptr)
+		return false;
+
+	NSDate *date = [sparkleUpdater lastUpdateCheckDate];
+#ifdef MAC_OS_X_VERSION_10_10
+	NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierGregorian];
+	NSDateComponents *components = [gregorian components:(NSCalendarUnitDay | NSCalendarUnitWeekday) fromDate:date];
+#else
+	NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
+	NSDateComponents *components = [gregorian components:(NSDayCalendarUnit | NSWeekdayCalendarUnit) fromDate:date];
+#endif
+
+	t.tm_wday = [components weekday];
+	t.tm_year = [components year];
+	t.tm_mon = [components month];
+	t.tm_mday = [components day];
+	t.tm_hour = [components hour];
+	t.tm_min = [components minute];
+	t.tm_sec = [components second];
+
+	[gregorian release];
+
+	return true;
+}
+
 #endif