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/* 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.
*
* $URL$
* $Id$
*
*/
#ifndef BACKENDS_GRAPHICS_OPENGL_H
#define BACKENDS_GRAPHICS_OPENGL_H
#include "backends/graphics/opengl/gltexture.h"
#include "backends/graphics/graphics.h"
#include "common/events.h"
// Uncomment this to enable the 'on screen display' code.
#define USE_OSD 1
namespace OpenGL {
enum {
GFX_NORMAL = 0,
GFX_DOUBLESIZE = 1,
GFX_TRIPLESIZE = 2
};
}
/**
* Open GL graphics manager
*/
class OpenGLGraphicsManager : public GraphicsManager, public Common::EventObserver {
public:
OpenGLGraphicsManager();
virtual ~OpenGLGraphicsManager();
virtual bool hasFeature(OSystem::Feature f);
virtual void setFeatureState(OSystem::Feature f, bool enable);
virtual bool getFeatureState(OSystem::Feature f);
virtual const OSystem::GraphicsMode *getSupportedGraphicsModes() const;
virtual int getDefaultGraphicsMode() const;
virtual bool setGraphicsMode(int mode);
virtual int getGraphicsMode() const;
virtual void resetGraphicsScale();
#ifdef USE_RGB_COLOR
virtual Graphics::PixelFormat getScreenFormat() const;
virtual Common::List<Graphics::PixelFormat> getSupportedFormats() const = 0;
#endif
virtual void initSize(uint width, uint height, const Graphics::PixelFormat *format = NULL);
virtual int getScreenChangeID() const;
virtual void beginGFXTransaction();
virtual OSystem::TransactionError endGFXTransaction();
virtual int16 getHeight();
virtual int16 getWidth();
virtual void setPalette(const byte *colors, uint start, uint num);
virtual void grabPalette(byte *colors, uint start, uint num);
virtual void copyRectToScreen(const byte *buf, int pitch, int x, int y, int w, int h);
virtual Graphics::Surface *lockScreen();
virtual void unlockScreen();
virtual void fillScreen(uint32 col);
virtual void updateScreen();
virtual void setShakePos(int shakeOffset);
virtual void setFocusRectangle(const Common::Rect& rect);
virtual void clearFocusRectangle();
virtual void showOverlay();
virtual void hideOverlay();
virtual Graphics::PixelFormat getOverlayFormat() const;
virtual void clearOverlay();
virtual void grabOverlay(OverlayColor *buf, int pitch);
virtual void copyRectToOverlay(const OverlayColor *buf, int pitch, int x, int y, int w, int h);
virtual int16 getOverlayHeight();
virtual int16 getOverlayWidth();
virtual bool showMouse(bool visible);
virtual void warpMouse(int x, int y);
virtual void setMouseCursor(const byte *buf, uint w, uint h, int hotspotX, int hotspotY, uint32 keycolor, int cursorTargetScale = 1, const Graphics::PixelFormat *format = NULL);
virtual void setCursorPalette(const byte *colors, uint start, uint num);
virtual void disableCursorPalette(bool disable);
virtual void displayMessageOnOSD(const char *msg);
// Override from Common::EventObserver
bool notifyEvent(const Common::Event &event);
protected:
virtual void initGL();
virtual void loadTextures();
//
// GFX and video
//
enum {
kTransactionNone = 0,
kTransactionActive = 1,
kTransactionRollback = 2
};
struct TransactionDetails {
bool sizeChanged;
bool needHotswap;
bool needUpdatescreen;
bool newContext;
bool filterChanged;
#ifdef USE_RGB_COLOR
bool formatChanged;
#endif
};
TransactionDetails _transactionDetails;
int _transactionMode;
enum {
kAspectRatioNone,
kAspectRatioConserve,
kAspectRatio4_3,
kAspectRatio16_9,
kAspectRatio16_10
};
struct VideoState {
bool setup;
bool fullscreen;
int activeFullscreenMode;
int aspectRatioCorrection;
int mode;
int scaleFactor;
bool antialiasing;
int screenWidth, screenHeight;
int overlayWidth, overlayHeight;
int hardwareWidth, hardwareHeight;
#ifdef USE_RGB_COLOR
Graphics::PixelFormat format;
#endif
};
VideoState _videoMode, _oldVideoMode;
virtual void getGLPixelFormat(Graphics::PixelFormat pixelFormat, byte &bpp, GLenum &glFormat, GLenum &type);
virtual void internUpdateScreen();
virtual bool loadGFXMode();
virtual void unloadGFXMode();
virtual void setScale(int newScale);
int _aspectX;
int _aspectY;
int _aspectWidth;
int _aspectHeight;
virtual void setAspectRatioCorrection(int mode);
virtual void refreshAspectRatio();
virtual Common::String getAspectRatioName();
virtual float getAspectRatio();
bool _formatBGR;
//
// Game screen
//
GLTexture* _gameTexture;
Graphics::Surface _screenData;
int _screenChangeCount;
bool _screenNeedsRedraw;
Common::Rect _screenDirtyRect;
#ifdef USE_RGB_COLOR
Graphics::PixelFormat _screenFormat;
#endif
byte *_gamePalette;
virtual void refreshGameScreen();
// Shake mode
int _shakePos;
//
// Overlay
//
GLTexture* _overlayTexture;
Graphics::Surface _overlayData;
Graphics::PixelFormat _overlayFormat;
bool _overlayVisible;
bool _overlayNeedsRedraw;
Common::Rect _overlayDirtyRect;
virtual void refreshOverlay();
//
// Mouse
//
struct MousePos {
// The mouse position, using either virtual (game) or real
// (overlay) coordinates.
int16 x, y;
// The size and hotspot of the original cursor image.
int16 w, h;
int16 hotX, hotY;
// The size and hotspot of the scaled cursor, in real
// coordinates.
int16 rW, rH;
int16 rHotX, rHotY;
// The size and hotspot of the scaled cursor, in game
// coordinates.
int16 vW, vH;
int16 vHotX, vHotY;
MousePos() : x(0), y(0), w(0), h(0), hotX(0), hotY(0),
rW(0), rH(0), rHotX(0), rHotY(0), vW(0), vH(0),
vHotX(0), vHotY(0) {}
};
GLTexture* _cursorTexture;
Graphics::Surface _cursorData;
#ifdef USE_RGB_COLOR
Graphics::PixelFormat _cursorFormat;
#endif
byte *_cursorPalette;
bool _cursorPaletteDisabled;
MousePos _cursorState;
bool _cursorVisible;
uint32 _cursorKeyColor;
int _cursorTargetScale;
bool _cursorNeedsRedraw;
virtual void refreshCursor();
virtual void refreshCursorScale();
virtual void adjustMouseEvent(const Common::Event &event);
virtual void setMousePos(int x, int y);
//
// Misc
//
virtual bool saveScreenshot(const char *filename);
#ifdef USE_OSD
GLTexture *_osdTexture;
Graphics::Surface _osdSurface;
uint8 _osdAlpha;
uint32 _osdFadeStartTime;
enum {
kOSDFadeOutDelay = 2 * 1000,
kOSDFadeOutDuration = 500,
kOSDInitialAlpha = 80
};
#endif
};
#endif
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