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Diffstat (limited to 'backends/graphics/opengl/opengl-graphics.cpp')
| -rw-r--r-- | backends/graphics/opengl/opengl-graphics.cpp | 1256 |
1 files changed, 1256 insertions, 0 deletions
diff --git a/backends/graphics/opengl/opengl-graphics.cpp b/backends/graphics/opengl/opengl-graphics.cpp new file mode 100644 index 0000000000..f1436170b8 --- /dev/null +++ b/backends/graphics/opengl/opengl-graphics.cpp @@ -0,0 +1,1256 @@ +/* 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. + * + * $URL$ + * $Id$ + * + */ + +#ifdef USE_OPENGL + +#include "backends/graphics/opengl/opengl-graphics.h" +#include "backends/graphics/opengl/glerrorcheck.h" +#include "common/file.h" +#include "common/mutex.h" +#include "common/translation.h" +#include "graphics/font.h" +#include "graphics/fontman.h" + +OpenGLGraphicsManager::OpenGLGraphicsManager() + : +#ifdef USE_OSD + _osdTexture(0), _osdAlpha(0), _osdFadeStartTime(0), +#endif + _gameTexture(0), _overlayTexture(0), _cursorTexture(0), + _screenChangeCount(0), _screenNeedsRedraw(false), + _shakePos(0), + _overlayVisible(false), _overlayNeedsRedraw(false), + _transactionMode(kTransactionNone), + _cursorNeedsRedraw(false), _cursorPaletteDisabled(true), + _cursorVisible(false), _cursorKeyColor(0), + _cursorTargetScale(1), + _formatBGR(false), + _aspectX(0), _aspectY(0), _aspectWidth(0), _aspectHeight(0) { + + memset(&_oldVideoMode, 0, sizeof(_oldVideoMode)); + memset(&_videoMode, 0, sizeof(_videoMode)); + memset(&_transactionDetails, 0, sizeof(_transactionDetails)); + + _videoMode.mode = OpenGL::GFX_DOUBLESIZE; + _videoMode.scaleFactor = 2; + _videoMode.fullscreen = false; + _videoMode.antialiasing = false; + _videoMode.aspectRatioCorrection = 0; + + _gamePalette = (byte *)calloc(sizeof(byte) * 4, 256); + _cursorPalette = (byte *)calloc(sizeof(byte) * 4, 256); + + // Register the graphics manager as a event observer + g_system->getEventManager()->getEventDispatcher()->registerObserver(this, 2, false); +} + +OpenGLGraphicsManager::~OpenGLGraphicsManager() { + // Unregister the event observer + if (g_system->getEventManager()->getEventDispatcher() != NULL) + g_system->getEventManager()->getEventDispatcher()->unregisterObserver(this); + + free(_gamePalette); + free(_cursorPalette); + + if (_gameTexture != NULL) + delete _gameTexture; + if (_overlayTexture != NULL) + delete _overlayTexture; + if (_cursorTexture != NULL) + delete _cursorTexture; +} + +// +// Feature +// + +bool OpenGLGraphicsManager::hasFeature(OSystem::Feature f) { + return + (f == OSystem::kFeatureAspectRatioCorrection) || + (f == OSystem::kFeatureCursorHasPalette); +} + +void OpenGLGraphicsManager::setFeatureState(OSystem::Feature f, bool enable) { + switch (f) { + case OSystem::kFeatureAspectRatioCorrection: + setAspectRatioCorrection(enable ? -1 : 0); + break; + default: + break; + } +} + +bool OpenGLGraphicsManager::getFeatureState(OSystem::Feature f) { + return false; +} + +// +// Screen format and modes +// + +static const OSystem::GraphicsMode s_supportedGraphicsModes[] = { + {"gl1x", _s("OpenGL Normal"), OpenGL::GFX_NORMAL}, +#ifdef USE_SCALERS + {"gl2x", "OpenGL 2x", OpenGL::GFX_DOUBLESIZE}, + {"gl3x", "OpenGL 3x", OpenGL::GFX_TRIPLESIZE}, +#endif + {0, 0, 0} +}; + +const OSystem::GraphicsMode *OpenGLGraphicsManager::supportedGraphicsModes() { + return s_supportedGraphicsModes; +} + +const OSystem::GraphicsMode *OpenGLGraphicsManager::getSupportedGraphicsModes() const { + return s_supportedGraphicsModes; +} + +int OpenGLGraphicsManager::getDefaultGraphicsMode() const { + return OpenGL::GFX_NORMAL; +} + +bool OpenGLGraphicsManager::setGraphicsMode(int mode) { + assert(_transactionMode == kTransactionActive); + + if (_oldVideoMode.setup && _oldVideoMode.mode == mode) + return true; + + int newScaleFactor = 1; + + switch (mode) { + case OpenGL::GFX_NORMAL: + newScaleFactor = 1; + break; +#ifdef USE_SCALERS + case OpenGL::GFX_DOUBLESIZE: + newScaleFactor = 2; + break; + case OpenGL::GFX_TRIPLESIZE: + newScaleFactor = 3; + break; +#endif + default: + warning("unknown gfx mode %d", mode); + return false; + } + + if (_oldVideoMode.setup && _oldVideoMode.scaleFactor != newScaleFactor) + _transactionDetails.needHotswap = true; + + _transactionDetails.needUpdatescreen = true; + + _videoMode.mode = mode; + _videoMode.scaleFactor = newScaleFactor; + + return true; +} + +int OpenGLGraphicsManager::getGraphicsMode() const { + assert (_transactionMode == kTransactionNone); + return _videoMode.mode; +} + +void OpenGLGraphicsManager::resetGraphicsScale() { + setScale(1); +} + +#ifdef USE_RGB_COLOR + +Graphics::PixelFormat OpenGLGraphicsManager::getScreenFormat() const { + return _screenFormat; +} + +#endif + +void OpenGLGraphicsManager::initSize(uint width, uint height, const Graphics::PixelFormat *format) { + assert(_transactionMode == kTransactionActive); + +#ifdef USE_RGB_COLOR + // Avoid redundant format changes + Graphics::PixelFormat newFormat; + if (!format) + newFormat = Graphics::PixelFormat::createFormatCLUT8(); + else + newFormat = *format; + + assert(newFormat.bytesPerPixel > 0); + + if (newFormat != _videoMode.format) { + _videoMode.format = newFormat; + _transactionDetails.formatChanged = true; + _screenFormat = newFormat; + } +#endif + + // Avoid redundant res changes + if ((int)width == _videoMode.screenWidth && (int)height == _videoMode.screenHeight) + return; + + _videoMode.screenWidth = width; + _videoMode.screenHeight = height; + + _transactionDetails.sizeChanged = true; +} + +int OpenGLGraphicsManager::getScreenChangeID() const { + return _screenChangeCount; +} + +// +// GFX +// + +void OpenGLGraphicsManager::beginGFXTransaction() { + assert(_transactionMode == kTransactionNone); + + _transactionMode = kTransactionActive; + _transactionDetails.sizeChanged = false; + _transactionDetails.needHotswap = false; + _transactionDetails.needUpdatescreen = false; + _transactionDetails.newContext = false; + _transactionDetails.filterChanged = false; +#ifdef USE_RGB_COLOR + _transactionDetails.formatChanged = false; +#endif + + _oldVideoMode = _videoMode; +} + +OSystem::TransactionError OpenGLGraphicsManager::endGFXTransaction() { + int errors = OSystem::kTransactionSuccess; + + assert(_transactionMode != kTransactionNone); + + if (_transactionMode == kTransactionRollback) { + if (_videoMode.fullscreen != _oldVideoMode.fullscreen) { + errors |= OSystem::kTransactionFullscreenFailed; + + _videoMode.fullscreen = _oldVideoMode.fullscreen; + } else if (_videoMode.aspectRatioCorrection != _oldVideoMode.aspectRatioCorrection) { + errors |= OSystem::kTransactionAspectRatioFailed; + + _videoMode.aspectRatioCorrection = _oldVideoMode.aspectRatioCorrection; + } else if (_videoMode.mode != _oldVideoMode.mode) { + errors |= OSystem::kTransactionModeSwitchFailed; + + _videoMode.mode = _oldVideoMode.mode; + _videoMode.scaleFactor = _oldVideoMode.scaleFactor; +#ifdef USE_RGB_COLOR + } else if (_videoMode.format != _oldVideoMode.format) { + errors |= OSystem::kTransactionFormatNotSupported; + + _videoMode.format = _oldVideoMode.format; + _screenFormat = _videoMode.format; +#endif + } else if (_videoMode.screenWidth != _oldVideoMode.screenWidth || _videoMode.screenHeight != _oldVideoMode.screenHeight) { + errors |= OSystem::kTransactionSizeChangeFailed; + + _videoMode.screenWidth = _oldVideoMode.screenWidth; + _videoMode.screenHeight = _oldVideoMode.screenHeight; + _videoMode.overlayWidth = _oldVideoMode.overlayWidth; + _videoMode.overlayHeight = _oldVideoMode.overlayHeight; + } + + if (_videoMode.fullscreen == _oldVideoMode.fullscreen && + _videoMode.aspectRatioCorrection == _oldVideoMode.aspectRatioCorrection && + _videoMode.mode == _oldVideoMode.mode && + _videoMode.screenWidth == _oldVideoMode.screenWidth && + _videoMode.screenHeight == _oldVideoMode.screenHeight) { + + _oldVideoMode.setup = false; + } + } + +#ifdef USE_RGB_COLOR + if (_transactionDetails.sizeChanged || _transactionDetails.formatChanged || _transactionDetails.needHotswap) { +#else + if (_transactionDetails.sizeChanged || _transactionDetails.needHotswap) { +#endif + unloadGFXMode(); + if (!loadGFXMode()) { + if (_oldVideoMode.setup) { + _transactionMode = kTransactionRollback; + errors |= endGFXTransaction(); + } + } else { + clearOverlay(); + + _videoMode.setup = true; + _screenChangeCount++; + } + } else if (_transactionDetails.filterChanged) { + loadTextures(); + internUpdateScreen(); + } else if (_transactionDetails.needUpdatescreen) { + internUpdateScreen(); + } + + _transactionMode = kTransactionNone; + return (OSystem::TransactionError)errors; +} + +// +// Screen +// + +int16 OpenGLGraphicsManager::getHeight() { + return _videoMode.screenHeight; +} + +int16 OpenGLGraphicsManager::getWidth() { + return _videoMode.screenWidth; +} + +void OpenGLGraphicsManager::setPalette(const byte *colors, uint start, uint num) { + assert(colors); + +#ifdef USE_RGB_COLOR + assert(_screenFormat.bytesPerPixel == 1); +#endif + + // Save the screen palette + memcpy(_gamePalette + start * 4, colors, num * 4); + + _screenNeedsRedraw = true; + + if (_cursorPaletteDisabled) + _cursorNeedsRedraw = true; +} + +void OpenGLGraphicsManager::grabPalette(byte *colors, uint start, uint num) { + assert(colors); + +#ifdef USE_RGB_COLOR + assert(_screenFormat.bytesPerPixel == 1); +#endif + + // Copies current palette to buffer + memcpy(colors, _gamePalette + start * 4, num * 4); +} + +void OpenGLGraphicsManager::copyRectToScreen(const byte *buf, int pitch, int x, int y, int w, int h) { + assert(x >= 0 && x < _screenData.w); + assert(y >= 0 && y < _screenData.h); + assert(h > 0 && y + h <= _screenData.h); + assert(w > 0 && x + w <= _screenData.w); + + // Copy buffer data to game screen internal buffer + const byte *src = buf; + byte *dst = (byte *)_screenData.pixels + y * _screenData.pitch; + for (int i = 0; i < h; i++) { + memcpy(dst + x * _screenData.bytesPerPixel, src, w * _screenData.bytesPerPixel); + src += pitch; + dst += _screenData.pitch; + } + + // Extend dirty area if not full screen redraw is flagged + if (!_screenNeedsRedraw) { + const Common::Rect dirtyRect(x, y, x + w, y + h); + _screenDirtyRect.extend(dirtyRect); + } +} + +Graphics::Surface *OpenGLGraphicsManager::lockScreen() { + return &_screenData; +} + +void OpenGLGraphicsManager::unlockScreen() { + _screenNeedsRedraw = true; +} + +void OpenGLGraphicsManager::fillScreen(uint32 col) { + if (_gameTexture == NULL) + return; + + if (_screenFormat.bytesPerPixel == 1) { + memset(_screenData.pixels, col, _screenData.h * _screenData.pitch); + } else if (_screenFormat.bytesPerPixel == 2) { + uint16 *pixels = (uint16 *)_screenData.pixels; + uint16 col16 = (uint16)col; + for (int i = 0; i < _screenData.w * _screenData.h; i++) { + pixels[i] = col16; + } + } else if (_screenFormat.bytesPerPixel == 3) { + uint8 *pixels = (uint8 *)_screenData.pixels; + byte r = (col >> 16) & 0xFF; + byte g = (col >> 8) & 0xFF; + byte b = col & 0xFF; + for (int i = 0; i < _screenData.w * _screenData.h; i++) { + pixels[0] = r; + pixels[1] = g; + pixels[2] = b; + pixels += 3; + } + } else if (_screenFormat.bytesPerPixel == 4) { + uint32 *pixels = (uint32 *)_screenData.pixels; + for (int i = 0; i < _screenData.w * _screenData.h; i++) { + pixels[i] = col; + } + } + + _screenNeedsRedraw = true; +} + +void OpenGLGraphicsManager::updateScreen() { + assert (_transactionMode == kTransactionNone); + internUpdateScreen(); +} + +void OpenGLGraphicsManager::setShakePos(int shakeOffset) { + assert (_transactionMode == kTransactionNone); + _shakePos = shakeOffset; +} + +void OpenGLGraphicsManager::setFocusRectangle(const Common::Rect& rect) { + +} + +void OpenGLGraphicsManager::clearFocusRectangle() { + +} + +// +// Overlay +// + +void OpenGLGraphicsManager::showOverlay() { + assert (_transactionMode == kTransactionNone); + + if (_overlayVisible) + return; + + _overlayVisible = true; + + clearOverlay(); +} + +void OpenGLGraphicsManager::hideOverlay() { + assert (_transactionMode == kTransactionNone); + + if (!_overlayVisible) + return; + + _overlayVisible = false; + + clearOverlay(); +} + +Graphics::PixelFormat OpenGLGraphicsManager::getOverlayFormat() const { + return _overlayFormat; +} + +void OpenGLGraphicsManager::clearOverlay() { + memset(_overlayData.pixels, 0, _overlayData.h * _overlayData.pitch); + _overlayNeedsRedraw = true; +} + +void OpenGLGraphicsManager::grabOverlay(OverlayColor *buf, int pitch) { + assert(_overlayData.bytesPerPixel == sizeof(buf[0])); + const byte *src = (byte *)_overlayData.pixels; + for (int i = 0; i < _overlayData.h; i++) { + memcpy(buf, src, _overlayData.pitch); + buf += pitch; + src += _overlayData.pitch; + } +} + +void OpenGLGraphicsManager::copyRectToOverlay(const OverlayColor *buf, int pitch, int x, int y, int w, int h) { + assert (_transactionMode == kTransactionNone); + + if (_overlayTexture == NULL) + return; + + // Clip the coordinates + if (x < 0) { + w += x; + buf -= x; + x = 0; + } + + if (y < 0) { + h += y; buf -= y * pitch; + y = 0; + } + + if (w > _overlayData.w - x) + w = _overlayData.w - x; + + if (h > _overlayData.h - y) + h = _overlayData.h - y; + + if (w <= 0 || h <= 0) + return; + + if (_overlayFormat.aBits() == 1) { + // Copy buffer with the alpha bit on for all pixels for correct + // overlay drawing. + const uint16 *src = (const uint16 *)buf; + uint16 *dst = (uint16 *)_overlayData.pixels + y * _overlayData.w + x; + for (int i = 0; i < h; i++) { + for (int e = 0; e < w; e++) + dst[e] = src[e] | 0x1; + src += pitch; + dst += _overlayData.w; + } + } else { + // Copy buffer data to internal overlay surface + const byte *src = (const byte *)buf; + byte *dst = (byte *)_overlayData.pixels + y * _overlayData.pitch; + for (int i = 0; i < h; i++) { + memcpy(dst + x * _overlayData.bytesPerPixel, src, w * _overlayData.bytesPerPixel); + src += pitch * sizeof(buf[0]); + dst += _overlayData.pitch; + } + } + + // Extend dirty area if not full screen redraw is flagged + if (!_overlayNeedsRedraw) { + const Common::Rect dirtyRect(x, y, x + w, y + h); + _overlayDirtyRect.extend(dirtyRect); + } +} + +int16 OpenGLGraphicsManager::getOverlayHeight() { + return _videoMode.overlayHeight; +} + +int16 OpenGLGraphicsManager::getOverlayWidth() { + return _videoMode.overlayWidth; +} + +// +// Cursor +// + +bool OpenGLGraphicsManager::showMouse(bool visible) { + if (_cursorVisible == visible) + return visible; + + bool last = _cursorVisible; + _cursorVisible = visible; + + return last; +} + +void OpenGLGraphicsManager::setMousePos(int x, int y) { + _cursorState.x = x; + _cursorState.y = y; +} + +void OpenGLGraphicsManager::warpMouse(int x, int y) { + setMousePos(x, y); +} + +void OpenGLGraphicsManager::setMouseCursor(const byte *buf, uint w, uint h, int hotspotX, int hotspotY, uint32 keycolor, int cursorTargetScale, const Graphics::PixelFormat *format) { +#ifdef USE_RGB_COLOR + if (!format) + _cursorFormat = Graphics::PixelFormat::createFormatCLUT8(); + else + _cursorFormat = *format; +#else + assert(keycolor <= 255); +#endif + + // Allocate space for cursor data + if (_cursorData.w != w || _cursorData.h != h) + _cursorData.create(w, h, _cursorFormat.bytesPerPixel); + + // Save cursor data + memcpy(_cursorData.pixels, buf, h * _cursorData.pitch); + + // Set cursor info + _cursorState.w = w; + _cursorState.h = h; + _cursorState.hotX = hotspotX; + _cursorState.hotY = hotspotY; + _cursorKeyColor = keycolor; + _cursorTargetScale = cursorTargetScale; + _cursorNeedsRedraw = true; + + refreshCursorScale(); +} + +void OpenGLGraphicsManager::setCursorPalette(const byte *colors, uint start, uint num) { + assert(colors); + + // Save the cursor palette + memcpy(_cursorPalette + start * 4, colors, num * 4); + + _cursorPaletteDisabled = false; + _cursorNeedsRedraw = true; +} + +void OpenGLGraphicsManager::disableCursorPalette(bool disable) { + _cursorPaletteDisabled = disable; + _cursorNeedsRedraw = true; +} + +// +// Misc +// + +void OpenGLGraphicsManager::displayMessageOnOSD(const char *msg) { + assert (_transactionMode == kTransactionNone); + assert(msg); + + // The font we are going to use: + const Graphics::Font *font = FontMan.getFontByUsage(Graphics::FontManager::kOSDFont); + + if (_osdSurface.w != _osdTexture->getWidth() || _osdSurface.h != _osdTexture->getHeight()) + _osdSurface.create(_osdTexture->getWidth(), _osdTexture->getHeight(), 2); + else + // Clear everything + memset(_osdSurface.pixels, 0, _osdSurface.h * _osdSurface.pitch); + + // Split the message into separate lines. + Common::Array<Common::String> lines; + const char *ptr; + for (ptr = msg; *ptr; ++ptr) { + if (*ptr == '\n') { + lines.push_back(Common::String(msg, ptr - msg)); + msg = ptr + 1; + } + } + lines.push_back(Common::String(msg, ptr - msg)); + + // Determine a rect which would contain the message string (clipped to the + // screen dimensions). + const int vOffset = 6; + const int lineSpacing = 1; + const int lineHeight = font->getFontHeight() + 2 * lineSpacing; + int width = 0; + int height = lineHeight * lines.size() + 2 * vOffset; + for (uint i = 0; i < lines.size(); i++) { + width = MAX(width, font->getStringWidth(lines[i]) + 14); + } + + // Clip the rect + if (width > _osdSurface.w) + width = _osdSurface.w; + if (height > _osdSurface.h) + height = _osdSurface.h; + + int dstX = (_osdSurface.w - width) / 2; + int dstY = (_osdSurface.h - height) / 2; + + // Draw a dark gray rect + uint16 color = 0x294B; + uint16 *dst = (uint16 *)_osdSurface.pixels + dstY * _osdSurface.w + dstX; + for (int i = 0; i < height; i++) { + for (int j = 0; j < width; j++) + dst[j] = color; + dst += _osdSurface.w; + } + + // Render the message, centered, and in white + for (uint i = 0; i < lines.size(); i++) { + font->drawString(&_osdSurface, lines[i], + dstX, dstY + i * lineHeight + vOffset + lineSpacing, width, + 0xFFFF, Graphics::kTextAlignCenter); + } + + // Update the texture + _osdTexture->updateBuffer(_osdSurface.pixels, _osdSurface.pitch, 0, 0, + _osdSurface.w, _osdSurface.h); + + // Init the OSD display parameters, and the fade out + _osdAlpha = kOSDInitialAlpha; + _osdFadeStartTime = g_system->getMillis() + kOSDFadeOutDelay; +} + +// +// Intern +// + +void OpenGLGraphicsManager::refreshGameScreen() { + if (_screenNeedsRedraw) + _screenDirtyRect = Common::Rect(0, 0, _screenData.w, _screenData.h); + + int x = _screenDirtyRect.left; + int y = _screenDirtyRect.top; + int w = _screenDirtyRect.width(); + int h = _screenDirtyRect.height(); + + if (_screenData.bytesPerPixel == 1) { + // Create a temporary RGB888 surface + byte *surface = new byte[w * h * 3]; + + // Convert the paletted buffer to RGB888 + const byte *src = (byte *)_screenData.pixels + y * _screenData.pitch; + src += x * _screenData.bytesPerPixel; + byte *dst = surface; + for (int i = 0; i < h; i++) { + for (int j = 0; j < w; j++) { + dst[0] = _gamePalette[src[j] * 4]; + dst[1] = _gamePalette[src[j] * 4 + 1]; + dst[2] = _gamePalette[src[j] * 4 + 2]; + dst += 3; + } + src += _screenData.pitch; + } + + // Update the texture + _gameTexture->updateBuffer(surface, w * 3, x, y, w, h); + + // Free the temp surface + delete[] surface; + } else { + // Update the texture + _gameTexture->updateBuffer((byte *)_screenData.pixels + y * _screenData.pitch + + x * _screenData.bytesPerPixel, _screenData.pitch, x, y, w, h); + } + + _screenNeedsRedraw = false; + _screenDirtyRect = Common::Rect(); +} + +void OpenGLGraphicsManager::refreshOverlay() { + if (_overlayNeedsRedraw) + _overlayDirtyRect = Common::Rect(0, 0, _overlayData.w, _overlayData.h); + + int x = _overlayDirtyRect.left; + int y = _overlayDirtyRect.top; + int w = _overlayDirtyRect.width(); + int h = _overlayDirtyRect.height(); + + if (_overlayData.bytesPerPixel == 1) { + // Create a temporary RGB888 surface + byte *surface = new byte[w * h * 3]; + + // Convert the paletted buffer to RGB888 + const byte *src = (byte *)_overlayData.pixels + y * _overlayData.pitch; + src += x * _overlayData.bytesPerPixel; + byte *dst = surface; + for (int i = 0; i < h; i++) { + for (int j = 0; j < w; j++) { + dst[0] = _gamePalette[src[j] * 4]; + dst[1] = _gamePalette[src[j] * 4 + 1]; + dst[2] = _gamePalette[src[j] * 4 + 2]; + dst += 3; + } + src += _screenData.pitch; + } + + // Update the texture + _overlayTexture->updateBuffer(surface, w * 3, x, y, w, h); + + // Free the temp surface + delete[] surface; + } else { + // Update the texture + _overlayTexture->updateBuffer((byte *)_overlayData.pixels + y * _overlayData.pitch + + x * _overlayData.bytesPerPixel, _overlayData.pitch, x, y, w, h); + } + + _overlayNeedsRedraw = false; + _overlayDirtyRect = Common::Rect(); +} + +void OpenGLGraphicsManager::refreshCursor() { + _cursorNeedsRedraw = false; + + if (_cursorFormat.bytesPerPixel == 1) { + // Create a temporary RGBA8888 surface + byte *surface = new byte[_cursorState.w * _cursorState.h * 4]; + memset(surface, 0, _cursorState.w * _cursorState.h * 4); + + // Select palette + byte *palette; + if (_cursorPaletteDisabled) + palette = _gamePalette; + else + palette = _cursorPalette; + + // Convert the paletted cursor to RGBA8888 + const byte *src = (byte *)_cursorData.pixels; + byte *dst = surface; + for (int i = 0; i < _cursorState.w * _cursorState.h; i++) { + // Check for keycolor + if (src[i] != _cursorKeyColor) { + dst[0] = palette[src[i] * 4]; + dst[1] = palette[src[i] * 4 + 1]; + dst[2] = palette[src[i] * 4 + 2]; + dst[3] = 255; + } + dst += 4; + } + + // Allocate a texture big enough for cursor + _cursorTexture->allocBuffer(_cursorState.w, _cursorState.h); + + // Update the texture with new cursor + _cursorTexture->updateBuffer(surface, _cursorState.w * 4, 0, 0, _cursorState.w, _cursorState.h); + + // Free the temp surface + delete[] surface; + } +} + +void OpenGLGraphicsManager::refreshCursorScale() { + // Get the window minimum scale factor. The cursor will mantain its original aspect + // ratio, and we do not want it to get too big if only one dimension is resized + float screenScaleFactor = MIN((float)_videoMode.hardwareWidth / _videoMode.screenWidth, + (float)_videoMode.hardwareHeight / _videoMode.screenHeight); + + if (_cursorTargetScale >= screenScaleFactor && _videoMode.scaleFactor >= screenScaleFactor) { + // If the cursor target scale and the video mode scale factor are bigger than + // the current window scale, do not scale the cursor for the overlay + _cursorState.rW = _cursorState.w; + _cursorState.rH = _cursorState.h; + _cursorState.rHotX = _cursorState.hotX; + _cursorState.rHotY = _cursorState.hotY; + } else { + // Otherwise, scale the cursor for the overlay + float targetScaleFactor = MIN(_cursorTargetScale, _videoMode.scaleFactor); + float actualFactor = (screenScaleFactor - targetScaleFactor + 1); + _cursorState.rW = (int16)(_cursorState.w * actualFactor); + _cursorState.rH = (int16)(_cursorState.h * actualFactor); + _cursorState.rHotX = (int16)(_cursorState.hotX * actualFactor); + _cursorState.rHotY = (int16)(_cursorState.hotY * actualFactor); + } + + // Always scale the cursor for the game + _cursorState.vW = (int16)(_cursorState.w * screenScaleFactor); + _cursorState.vH = (int16)(_cursorState.h * screenScaleFactor); + _cursorState.vHotX = (int16)(_cursorState.hotX * screenScaleFactor); + _cursorState.vHotY = (int16)(_cursorState.hotY * screenScaleFactor); +} + +void OpenGLGraphicsManager::refreshAspectRatio() { + _aspectWidth = _videoMode.hardwareWidth; + _aspectHeight = _videoMode.hardwareHeight; + + float aspectRatio = (float)_videoMode.hardwareWidth / _videoMode.hardwareHeight; + float desiredAspectRatio = getAspectRatio(); + + if (aspectRatio < desiredAspectRatio) + _aspectHeight = (int)(_aspectWidth / desiredAspectRatio + 0.5f); + else if (aspectRatio > desiredAspectRatio) + _aspectWidth = (int)(_aspectHeight * desiredAspectRatio + 0.5f); + + _aspectX = (_videoMode.hardwareWidth - _aspectWidth) / 2; + _aspectY = (_videoMode.hardwareHeight - _aspectHeight) / 2; +} + +void OpenGLGraphicsManager::getGLPixelFormat(Graphics::PixelFormat pixelFormat, byte &bpp, GLenum &glFormat, GLenum &gltype) { + if (pixelFormat == Graphics::PixelFormat(4, 8, 8, 8, 8, 24, 16, 8, 0)) { // RGBA8888 + bpp = 4; + glFormat = GL_RGBA; + gltype = GL_UNSIGNED_BYTE; + } else if (pixelFormat == Graphics::PixelFormat(3, 8, 8, 8, 0, 16, 8, 0, 0)) { // RGB888 + bpp = 3; + glFormat = GL_RGB; + gltype = GL_UNSIGNED_BYTE; + } else if (pixelFormat == Graphics::PixelFormat(2, 5, 6, 5, 0, 11, 5, 0, 0)) { // RGB565 + bpp = 2; + glFormat = GL_RGB; + gltype = GL_UNSIGNED_SHORT_5_6_5; + } else if (pixelFormat == Graphics::PixelFormat(2, 5, 5, 5, 1, 11, 6, 1, 0)) { // RGB5551 + bpp = 2; + glFormat = GL_RGBA; + gltype = GL_UNSIGNED_SHORT_5_5_5_1; + } else if (pixelFormat == Graphics::PixelFormat(2, 4, 4, 4, 4, 12, 8, 4, 0)) { // RGBA4444 + bpp = 2; + glFormat = GL_RGBA; + gltype = GL_UNSIGNED_SHORT_4_4_4_4; + } else if (pixelFormat.bytesPerPixel == 1) { // CLUT8 + // If uses a palette, create texture as RGB888. The pixel data will be converted + // later. + bpp = 3; + glFormat = GL_RGB; + gltype = GL_UNSIGNED_BYTE; + } else { + error("OpenGLGraphicsManager: Pixel format not supported"); + } +} + +void OpenGLGraphicsManager::internUpdateScreen() { + // Clear the screen buffer + glClear(GL_COLOR_BUFFER_BIT); CHECK_GL_ERROR(); + + if (_screenNeedsRedraw || !_screenDirtyRect.isEmpty()) + // Refresh texture if dirty + refreshGameScreen(); + + int scaleFactor = _videoMode.hardwareHeight / _videoMode.screenHeight; + + glPushMatrix(); + + glTranslatef(0, _shakePos * scaleFactor, 0); CHECK_GL_ERROR(); + + // Draw the game screen + _gameTexture->drawTexture(_aspectX, _aspectY, _aspectWidth, _aspectHeight); + + glPopMatrix(); + + if (_overlayVisible) { + if (_overlayNeedsRedraw || !_overlayDirtyRect.isEmpty()) + // Refresh texture if dirty + refreshOverlay(); + + // Draw the overlay + _overlayTexture->drawTexture(_aspectX, _aspectY, _aspectWidth, _aspectHeight); + } + + if (_cursorVisible) { + if (_cursorNeedsRedraw) + // Refresh texture if dirty + refreshCursor(); + + glPushMatrix(); + glTranslatef(0, _overlayVisible ? 0 : _shakePos * scaleFactor, 0); CHECK_GL_ERROR(); + + // Draw the cursor + if (_overlayVisible) + _cursorTexture->drawTexture(_cursorState.x - _cursorState.rHotX, + _cursorState.y - _cursorState.rHotY, _cursorState.rW, _cursorState.rH); + else + _cursorTexture->drawTexture(_cursorState.x - _cursorState.vHotX, + _cursorState.y - _cursorState.vHotY, _cursorState.vW, _cursorState.vH); + + glPopMatrix(); + } + +#ifdef USE_OSD + if (_osdAlpha > 0) { + // Update alpha value + const int diff = g_system->getMillis() - _osdFadeStartTime; + if (diff > 0) { + if (diff >= kOSDFadeOutDuration) { + // Back to full transparency + _osdAlpha = 0; + } else { + // Do a fade out + _osdAlpha = kOSDInitialAlpha - diff * kOSDInitialAlpha / kOSDFadeOutDuration; + } + } + // Set the osd transparency + glColor4f(1.0f, 1.0f, 1.0f, _osdAlpha / 100.0f); CHECK_GL_ERROR(); + + // Draw the osd texture + _osdTexture->drawTexture(0, 0, _videoMode.hardwareWidth, _videoMode.hardwareHeight); + + // Reset color + glColor4f(1.0f, 1.0f, 1.0f, 1.0f); CHECK_GL_ERROR(); + } +#endif +} + +void OpenGLGraphicsManager::initGL() { + // Check available GL Extensions + GLTexture::initGLExtensions(); + + // Disable 3D properties + glDisable(GL_CULL_FACE); CHECK_GL_ERROR(); + glDisable(GL_DEPTH_TEST); CHECK_GL_ERROR(); + glDisable(GL_LIGHTING); CHECK_GL_ERROR(); + glDisable(GL_FOG); CHECK_GL_ERROR(); + glDisable(GL_DITHER); CHECK_GL_ERROR(); + glShadeModel(GL_FLAT); CHECK_GL_ERROR(); + glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST); CHECK_GL_ERROR(); + + // Setup alpha blend (For overlay and cursor) + glEnable(GL_BLEND); CHECK_GL_ERROR(); + glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); CHECK_GL_ERROR(); + + // Enable rendering with vertex and coord arrays + glEnableClientState(GL_VERTEX_ARRAY); CHECK_GL_ERROR(); + glEnableClientState(GL_TEXTURE_COORD_ARRAY); CHECK_GL_ERROR(); + + glEnable(GL_TEXTURE_2D); CHECK_GL_ERROR(); + + // Setup the GL viewport + glViewport(0, 0, _videoMode.hardwareWidth, _videoMode.hardwareHeight); CHECK_GL_ERROR(); + + // Setup coordinates system + glMatrixMode(GL_PROJECTION); CHECK_GL_ERROR(); + glLoadIdentity(); CHECK_GL_ERROR(); + glOrtho(0, _videoMode.hardwareWidth, _videoMode.hardwareHeight, 0, -1, 1); CHECK_GL_ERROR(); + glMatrixMode(GL_MODELVIEW); CHECK_GL_ERROR(); + glLoadIdentity(); CHECK_GL_ERROR(); +} + +void OpenGLGraphicsManager::loadTextures() { +#ifdef USE_RGB_COLOR + if (_transactionDetails.formatChanged && _gameTexture) + delete _gameTexture; +#endif + + if (!_gameTexture) { + byte bpp; + GLenum format; + GLenum type; +#ifdef USE_RGB_COLOR + getGLPixelFormat(_screenFormat, bpp, format, type); +#else + getGLPixelFormat(Graphics::PixelFormat::createFormatCLUT8(), bpp, format, type); +#endif + _gameTexture = new GLTexture(bpp, format, type); + } + + _overlayFormat = Graphics::PixelFormat(2, 5, 5, 5, 1, 11, 6, 1, 0); + + if (!_overlayTexture) { + byte bpp; + GLenum format; + GLenum type; + getGLPixelFormat(_overlayFormat, bpp, format, type); + _overlayTexture = new GLTexture(bpp, format, type); + } + + if (!_cursorTexture) + _cursorTexture = new GLTexture(4, GL_RGBA, GL_UNSIGNED_BYTE); + + GLint filter = _videoMode.antialiasing ? GL_LINEAR : GL_NEAREST; + _gameTexture->setFilter(filter); + _overlayTexture->setFilter(filter); + _cursorTexture->setFilter(filter); + + if (_transactionDetails.newContext || _transactionDetails.filterChanged) { + // If the context was destroyed or it is needed to change the texture filter + // we need to recreate the textures + _gameTexture->refresh(); + _overlayTexture->refresh(); + _cursorTexture->refresh(); + } + + // Allocate texture memory and finish refreshing + _gameTexture->allocBuffer(_videoMode.screenWidth, _videoMode.screenHeight); + _overlayTexture->allocBuffer(_videoMode.overlayWidth, _videoMode.overlayHeight); + _cursorTexture->allocBuffer(_cursorState.w, _cursorState.h); + + if (_transactionDetails.formatChanged || + _oldVideoMode.screenWidth != _videoMode.screenWidth || + _oldVideoMode.screenHeight != _videoMode.screenHeight) + _screenData.create(_videoMode.screenWidth, _videoMode.screenHeight, + _screenFormat.bytesPerPixel); + + if (_oldVideoMode.overlayWidth != _videoMode.overlayWidth || + _oldVideoMode.overlayHeight != _videoMode.overlayHeight) + _overlayData.create(_videoMode.overlayWidth, _videoMode.overlayHeight, + _overlayFormat.bytesPerPixel); + + _screenNeedsRedraw = true; + _overlayNeedsRedraw = true; + _cursorNeedsRedraw = true; + +#ifdef USE_OSD + if (!_osdTexture) + _osdTexture = new GLTexture(2, GL_RGBA, GL_UNSIGNED_SHORT_5_5_5_1); + + if (_transactionDetails.newContext || _transactionDetails.filterChanged) + _osdTexture->refresh(); + _osdTexture->allocBuffer(_videoMode.overlayWidth, _videoMode.overlayHeight); +#endif +} + +bool OpenGLGraphicsManager::loadGFXMode() { + // Initialize OpenGL settings + initGL(); + + loadTextures(); + + refreshCursorScale(); + + refreshAspectRatio(); + + internUpdateScreen(); + + return true; +} + +void OpenGLGraphicsManager::unloadGFXMode() { + +} + +void OpenGLGraphicsManager::setScale(int newScale) { + if (newScale == _videoMode.scaleFactor) + return; + + switch (newScale - 1) { + case OpenGL::GFX_NORMAL: + _videoMode.mode = OpenGL::GFX_NORMAL; + break; + case OpenGL::GFX_DOUBLESIZE: + _videoMode.mode = OpenGL::GFX_DOUBLESIZE; + break; + case OpenGL::GFX_TRIPLESIZE: + _videoMode.mode = OpenGL::GFX_TRIPLESIZE; + break; + } + + _videoMode.scaleFactor = newScale; + _transactionDetails.sizeChanged = true; +} + +void OpenGLGraphicsManager::setAspectRatioCorrection(int ratio) { + if (_oldVideoMode.setup && _oldVideoMode.aspectRatioCorrection == ratio) + return; + + if (_transactionMode == kTransactionActive) { + if (ratio == -1) + _videoMode.aspectRatioCorrection = (_videoMode.aspectRatioCorrection + 1) % 5; + else + _videoMode.aspectRatioCorrection = ratio; + _transactionDetails.needHotswap = true; + } +} + +Common::String OpenGLGraphicsManager::getAspectRatioName() { + switch (_videoMode.aspectRatioCorrection) { + case kAspectRatioNone: + return "None"; + case kAspectRatioConserve: + return "Conserve"; + case kAspectRatio4_3: + return "4/3"; + case kAspectRatio16_9: + return "16/9"; + case kAspectRatio16_10: + return "16/10"; + } + return ""; +} + +float OpenGLGraphicsManager::getAspectRatio() { + switch (_videoMode.aspectRatioCorrection) { + case kAspectRatioConserve: + return (float)_videoMode.screenWidth / _videoMode.screenHeight; + case kAspectRatio4_3: + return 4.0f / 3.0f; + case kAspectRatio16_9: + return 16.0f / 9.0f; + case kAspectRatio16_10: + return 16.0f / 10.0f; + default: + return (float)_videoMode.hardwareWidth / _videoMode.hardwareHeight; + } +} + +void OpenGLGraphicsManager::adjustMouseEvent(const Common::Event &event) { + if (!event.synthetic) { + Common::Event newEvent(event); + newEvent.synthetic = true; + + if (!_videoMode.aspectRatioCorrection) { + if (_videoMode.hardwareWidth != _videoMode.overlayWidth) + newEvent.mouse.x = newEvent.mouse.x * _videoMode.overlayWidth / _videoMode.hardwareWidth; + if (_videoMode.hardwareHeight != _videoMode.overlayHeight) + newEvent.mouse.y = newEvent.mouse.y * _videoMode.overlayHeight / _videoMode.hardwareHeight; + + if (!_overlayVisible) { + newEvent.mouse.x /= _videoMode.scaleFactor; + newEvent.mouse.y /= _videoMode.scaleFactor; + } + + } else { + newEvent.mouse.x -= _aspectX; + newEvent.mouse.y -= _aspectY; + + if (_overlayVisible) { + if (_aspectWidth != _videoMode.overlayWidth) + newEvent.mouse.x = newEvent.mouse.x * _videoMode.overlayWidth / _aspectWidth; + if (_aspectHeight != _videoMode.overlayHeight) + newEvent.mouse.y = newEvent.mouse.y * _videoMode.overlayHeight / _aspectHeight; + } else { + if (_aspectWidth != _videoMode.screenWidth) + newEvent.mouse.x = newEvent.mouse.x * _videoMode.screenWidth / _aspectWidth; + if (_aspectHeight != _videoMode.screenHeight) + newEvent.mouse.y = newEvent.mouse.y * _videoMode.screenHeight / _aspectHeight; + } + } + + g_system->getEventManager()->pushEvent(newEvent); + } +} + +bool OpenGLGraphicsManager::notifyEvent(const Common::Event &event) { + switch (event.type) { + case Common::EVENT_MOUSEMOVE: + if (!event.synthetic) + setMousePos(event.mouse.x, event.mouse.y); + case Common::EVENT_LBUTTONDOWN: + case Common::EVENT_RBUTTONDOWN: + case Common::EVENT_WHEELUP: + case Common::EVENT_WHEELDOWN: + case Common::EVENT_MBUTTONDOWN: + case Common::EVENT_LBUTTONUP: + case Common::EVENT_RBUTTONUP: + case Common::EVENT_MBUTTONUP: + adjustMouseEvent(event); + return !event.synthetic; + + default: + break; + } + + return false; +} + +bool OpenGLGraphicsManager::saveScreenshot(const char *filename) { + int width = _videoMode.hardwareWidth; + int height = _videoMode.hardwareHeight; + + // Allocate space for screenshot + uint8 *pixels = new uint8[width * height * 3]; + + // Get pixel data from opengl buffer + if (_formatBGR) { + glReadPixels(0, 0, width, height, GL_BGR, GL_UNSIGNED_BYTE, pixels); CHECK_GL_ERROR(); + } else { + glReadPixels(0, 0, width, height, GL_RGB, GL_UNSIGNED_BYTE, pixels); CHECK_GL_ERROR(); + } + + // Open file + Common::DumpFile out; + out.open(filename); + + // Write BMP header + out.writeByte('B'); + out.writeByte('M'); + out.writeUint32LE(height * width * 3 + 52); + out.writeUint32LE(0); + out.writeUint32LE(52); + out.writeUint32LE(40); + out.writeUint32LE(width); + out.writeUint32LE(height); + out.writeUint16LE(1); + out.writeUint16LE(24); + out.writeUint32LE(0); + out.writeUint32LE(0); + out.writeUint32LE(0); + out.writeUint32LE(0); + out.writeUint32LE(0); + out.writeUint32LE(0); + + // Write pixel data to BMP + out.write(pixels, width * height * 3); + + delete[] pixels; + + return true; +} + +#endif |