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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.
*
*/
#include "common/scummsys.h"
#if defined(SDL_BACKEND) && defined(USE_OPENGL)
#include "backends/graphics/openglsdl/openglsdl-graphics.h"
#include "backends/platform/sdl/sdl.h"
#include "common/config-manager.h"
#include "common/textconsole.h"
#include "common/translation.h"
OpenGLSdlGraphicsManager::OpenGLSdlGraphicsManager(SdlEventSource *eventSource)
:
SdlGraphicsManager(eventSource),
_hwscreen(0),
_screenResized(false),
_activeFullscreenMode(-2),
_lastFullscreenModeWidth(0),
_lastFullscreenModeHeight(0),
_desktopWidth(0),
_desktopHeight(0),
_ignoreResizeFrames(0) {
// Initialize SDL video subsystem
if (SDL_InitSubSystem(SDL_INIT_VIDEO) == -1) {
error("Could not initialize SDL: %s", SDL_GetError());
}
// This is also called in initSDL(), but initializing graphics
// may reset it.
SDL_EnableUNICODE(1);
// Disable OS cursor
SDL_ShowCursor(SDL_DISABLE);
// Get desktop resolution
// TODO: In case the OpenGL manager is created *after* a plain SDL manager
// has been used, this will return the last setup graphics mode rather
// than the desktop resolution. We should really look into a way to
// properly retrieve the desktop resolution.
const SDL_VideoInfo *videoInfo = SDL_GetVideoInfo();
if (videoInfo->current_w > 0 && videoInfo->current_h > 0) {
_desktopWidth = videoInfo->current_w;
_desktopHeight = videoInfo->current_h;
}
if (ConfMan.hasKey("last_fullscreen_mode_width") && ConfMan.hasKey("last_fullscreen_mode_height")) {
_lastFullscreenModeWidth = ConfMan.getInt("last_fullscreen_mode_width");
_lastFullscreenModeHeight = ConfMan.getInt("last_fullscreen_mode_height");
}
}
OpenGLSdlGraphicsManager::~OpenGLSdlGraphicsManager() {
// Unregister the event observer
if (g_system->getEventManager()->getEventDispatcher() != NULL)
g_system->getEventManager()->getEventDispatcher()->unregisterObserver(this);
}
void OpenGLSdlGraphicsManager::initEventObserver() {
// Register the graphics manager as a event observer
g_system->getEventManager()->getEventDispatcher()->registerObserver(this, 10, false);
}
bool OpenGLSdlGraphicsManager::hasFeature(OSystem::Feature f) {
return
(f == OSystem::kFeatureFullscreenMode) ||
(f == OSystem::kFeatureIconifyWindow) ||
OpenGLGraphicsManager::hasFeature(f);
}
void OpenGLSdlGraphicsManager::setFeatureState(OSystem::Feature f, bool enable) {
switch (f) {
case OSystem::kFeatureIconifyWindow:
if (enable)
SDL_WM_IconifyWindow();
break;
default:
OpenGLGraphicsManager::setFeatureState(f, enable);
}
}
#ifdef USE_RGB_COLOR
Common::List<Graphics::PixelFormat> OpenGLSdlGraphicsManager::getSupportedFormats() const {
assert(!_supportedFormats.empty());
return _supportedFormats;
}
void OpenGLSdlGraphicsManager::detectSupportedFormats() {
// Clear old list
_supportedFormats.clear();
// Some tables with standard formats that we always list
// as "supported". If frontend code tries to use one of
// these, we will perform the necessary format
// conversion in the background. Of course this incurs a
// performance hit, but on desktop ports this should not
// matter. We still push the currently active format to
// the front, so if frontend code just uses the first
// available format, it will get one that is "cheap" to
// use.
const Graphics::PixelFormat RGBList[] = {
#if defined(ENABLE_32BIT)
Graphics::PixelFormat(4, 8, 8, 8, 8, 24, 16, 8, 0), // RGBA8888
#ifndef USE_GLES
Graphics::PixelFormat(4, 8, 8, 8, 8, 16, 8, 0, 24), // ARGB8888
#endif
Graphics::PixelFormat(3, 8, 8, 8, 0, 16, 8, 0, 0), // RGB888
#endif
Graphics::PixelFormat(2, 5, 6, 5, 0, 11, 5, 0, 0), // RGB565
Graphics::PixelFormat(2, 5, 5, 5, 1, 11, 6, 1, 0), // RGB5551
Graphics::PixelFormat(2, 5, 5, 5, 0, 10, 5, 0, 0), // RGB555
Graphics::PixelFormat(2, 4, 4, 4, 4, 12, 8, 4, 0), // RGBA4444
#ifndef USE_GLES
Graphics::PixelFormat(2, 4, 4, 4, 4, 8, 4, 0, 12) // ARGB4444
#endif
};
#ifndef USE_GLES
const Graphics::PixelFormat BGRList[] = {
#ifdef ENABLE_32BIT
Graphics::PixelFormat(4, 8, 8, 8, 8, 0, 8, 16, 24), // ABGR8888
Graphics::PixelFormat(4, 8, 8, 8, 8, 8, 16, 24, 0), // BGRA8888
Graphics::PixelFormat(3, 8, 8, 8, 0, 0, 8, 16, 0), // BGR888
#endif
Graphics::PixelFormat(2, 5, 6, 5, 0, 0, 5, 11, 0), // BGR565
Graphics::PixelFormat(2, 5, 5, 5, 1, 1, 6, 11, 0), // BGRA5551
Graphics::PixelFormat(2, 4, 4, 4, 4, 0, 4, 8, 12), // ABGR4444
Graphics::PixelFormat(2, 4, 4, 4, 4, 4, 8, 12, 0) // BGRA4444
};
#endif
Graphics::PixelFormat format = Graphics::PixelFormat::createFormatCLUT8();
if (_hwscreen) {
// Get our currently set hardware format
format = Graphics::PixelFormat(_hwscreen->format->BytesPerPixel,
8 - _hwscreen->format->Rloss, 8 - _hwscreen->format->Gloss,
8 - _hwscreen->format->Bloss, 8 - _hwscreen->format->Aloss,
_hwscreen->format->Rshift, _hwscreen->format->Gshift,
_hwscreen->format->Bshift, _hwscreen->format->Ashift);
// Workaround to MacOSX SDL not providing an accurate Aloss value.
if (_hwscreen->format->Amask == 0)
format.aLoss = 8;
// Push it first, as the prefered format if available
for (int i = 0; i < ARRAYSIZE(RGBList); i++) {
if (RGBList[i] == format) {
_supportedFormats.push_back(format);
break;
}
}
#ifndef USE_GLES
for (int i = 0; i < ARRAYSIZE(BGRList); i++) {
if (BGRList[i] == format) {
_supportedFormats.push_back(format);
break;
}
}
#endif
}
// Push some RGB formats
for (int i = 0; i < ARRAYSIZE(RGBList); i++) {
if (_hwscreen && (RGBList[i].bytesPerPixel > format.bytesPerPixel))
continue;
if (RGBList[i] != format)
_supportedFormats.push_back(RGBList[i]);
}
#ifndef USE_GLES
// Push some BGR formats
for (int i = 0; i < ARRAYSIZE(BGRList); i++) {
if (_hwscreen && (BGRList[i].bytesPerPixel > format.bytesPerPixel))
continue;
if (BGRList[i] != format)
_supportedFormats.push_back(BGRList[i]);
}
#endif
_supportedFormats.push_back(Graphics::PixelFormat::createFormatCLUT8());
}
#endif
void OpenGLSdlGraphicsManager::setInternalMousePosition(int x, int y) {
SDL_WarpMouse(x, y);
}
void OpenGLSdlGraphicsManager::updateScreen() {
if (_ignoreResizeFrames)
_ignoreResizeFrames -= 1;
OpenGLGraphicsManager::updateScreen();
}
//
// Intern
//
bool OpenGLSdlGraphicsManager::setupFullscreenMode() {
SDL_Rect const* const*availableModes = SDL_ListModes(NULL, SDL_FULLSCREEN | SDL_OPENGL);
// SDL_ListModes() returns -1 in case any dimension is okay. In that
// case we'll reuse the current desktop resolution for fullscreen.
if (availableModes == (void *)-1) {
_videoMode.hardwareWidth = _desktopWidth;
_videoMode.hardwareHeight = _desktopHeight;
_activeFullscreenMode = -2;
return true;
}
// If -2, autodetect the fullscreen mode
// The last used fullscreen mode will be prioritized, if there is no last fullscreen
// mode, the desktop resolution will be used, and in case the desktop resolution
// is not available as a fullscreen mode, the one with smallest metric will be selected.
if (_activeFullscreenMode == -2) {
// Desktop resolution
int desktopModeIndex = -1;
// Best metric mode
const SDL_Rect *bestMode = availableModes[0];
int bestModeIndex = 0;
uint bestMetric = (uint)-1;
// Iterate over all available fullscreen modes
for (int i = 0; const SDL_Rect *mode = availableModes[i]; i++) {
// Try to setup the last used fullscreen mode
if (mode->w == _lastFullscreenModeWidth && mode->h == _lastFullscreenModeHeight) {
_videoMode.hardwareWidth = _lastFullscreenModeWidth;
_videoMode.hardwareHeight = _lastFullscreenModeHeight;
_activeFullscreenMode = i;
return true;
}
if (mode->w == _desktopWidth && mode->h == _desktopHeight)
desktopModeIndex = i;
if (mode->w < _videoMode.overlayWidth)
continue;
if (mode->h < _videoMode.overlayHeight)
continue;
uint metric = mode->w * mode->h - _videoMode.overlayWidth * _videoMode.overlayHeight;
if (metric < bestMetric) {
bestMode = mode;
bestMetric = metric;
bestModeIndex = i;
}
}
if (desktopModeIndex >= 0) {
_videoMode.hardwareWidth = _desktopWidth;
_videoMode.hardwareHeight = _desktopHeight;
_activeFullscreenMode = desktopModeIndex;
return true;
} else if (bestMode) {
_videoMode.hardwareWidth = bestMode->w;
_videoMode.hardwareHeight = bestMode->h;
_activeFullscreenMode = bestModeIndex;
return true;
}
} else {
// Use last fullscreen mode if looping backwards from the first mode
if (_activeFullscreenMode == -1) {
do {
_activeFullscreenMode++;
} while(availableModes[_activeFullscreenMode]);
_activeFullscreenMode--;
}
// Use first fullscreen mode if looping from last mode
if (!availableModes[_activeFullscreenMode])
_activeFullscreenMode = 0;
// Check if the fullscreen mode is valid
if (availableModes[_activeFullscreenMode]) {
_videoMode.hardwareWidth = availableModes[_activeFullscreenMode]->w;
_videoMode.hardwareHeight = availableModes[_activeFullscreenMode]->h;
return true;
}
}
// Could not find any suiting fullscreen mode, return false.
return false;
}
bool OpenGLSdlGraphicsManager::loadGFXMode() {
// If the screen was resized, do not change its size
if (!_screenResized) {
const int scaleFactor = getScale();
_videoMode.overlayWidth = _videoMode.hardwareWidth = _videoMode.screenWidth * scaleFactor;
_videoMode.overlayHeight = _videoMode.hardwareHeight = _videoMode.screenHeight * scaleFactor;
// The only modes where we need to adapt the aspect ratio are 320x200
// and 640x400. That is since our aspect ratio correction in fact is
// only used to ensure that the original pixel size aspect for these
// modes is used.
// (Non-square pixels on old monitors vs square pixel on new ones).
if (_videoMode.aspectRatioCorrection) {
if (_videoMode.screenWidth == 320 && _videoMode.screenHeight == 200)
_videoMode.overlayHeight = _videoMode.hardwareHeight = 240 * scaleFactor;
else if (_videoMode.screenWidth == 640 && _videoMode.screenHeight == 400)
_videoMode.overlayHeight = _videoMode.hardwareHeight = 480 * scaleFactor;
}
}
_screenResized = false;
// Setup OpenGL attributes for SDL
SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 16);
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
const bool isFullscreen = getFullscreenMode();
// In case we have an fullscreen mode and we are not in a rollback, detect
// a proper mode to use. In case we are in a rollback, we already detected
// a proper mode when setting up that mode, thus there is no need to run
// the detection again.
if (isFullscreen && _transactionMode != kTransactionRollback) {
if (!setupFullscreenMode())
// Failed setuping a fullscreen mode
return false;
}
_videoMode.overlayWidth = _videoMode.hardwareWidth;
_videoMode.overlayHeight = _videoMode.hardwareHeight;
uint32 flags = SDL_OPENGL;
if (isFullscreen)
flags |= SDL_FULLSCREEN;
else
flags |= SDL_RESIZABLE;
// Create our window
_hwscreen = SDL_SetVideoMode(_videoMode.hardwareWidth, _videoMode.hardwareHeight, 32, flags);
#ifdef USE_RGB_COLOR
detectSupportedFormats();
#endif
if (_hwscreen == NULL) {
// DON'T use error(), as this tries to bring up the debug
// console, which WON'T WORK now that _hwscreen is hosed.
if (!_oldVideoMode.setup) {
warning("SDL_SetVideoMode says we can't switch to that mode (%s)", SDL_GetError());
g_system->quit();
} else
// Cancel GFX load, and go back to last mode
return false;
}
// Check if the screen is BGR format
setFormatIsBGR(_hwscreen->format->Rshift != 0);
if (isFullscreen) {
_lastFullscreenModeWidth = _videoMode.hardwareWidth;
_lastFullscreenModeHeight = _videoMode.hardwareHeight;
ConfMan.setInt("last_fullscreen_mode_width", _lastFullscreenModeWidth);
ConfMan.setInt("last_fullscreen_mode_height", _lastFullscreenModeHeight);
}
// Call and return parent implementation of this method
return OpenGLGraphicsManager::loadGFXMode();
}
void OpenGLSdlGraphicsManager::unloadGFXMode() {
if (_hwscreen) {
SDL_FreeSurface(_hwscreen);
_hwscreen = NULL;
}
}
void OpenGLSdlGraphicsManager::internUpdateScreen() {
// Call to parent implementation of this method
OpenGLGraphicsManager::internUpdateScreen();
// Swap OpenGL buffers
SDL_GL_SwapBuffers();
}
#ifdef USE_OSD
void OpenGLSdlGraphicsManager::displayModeChangedMsg() {
const char *newModeName = getCurrentModeName();
if (newModeName) {
const int scaleFactor = getScale();
Common::String osdMessage = Common::String::format(
"%s: %s\n%d x %d -> %d x %d",
_("Current display mode"),
newModeName,
_videoMode.screenWidth * scaleFactor,
_videoMode.screenHeight * scaleFactor,
_hwscreen->w, _hwscreen->h
);
displayMessageOnOSD(osdMessage.c_str());
}
}
void OpenGLSdlGraphicsManager::displayScaleChangedMsg() {
const int scaleFactor = getScale();
Common::String osdMessage = Common::String::format(
"%s: x%d\n%d x %d -> %d x %d",
_("Current scale"),
scaleFactor,
_videoMode.screenWidth, _videoMode.screenHeight,
_videoMode.overlayWidth, _videoMode.overlayHeight
);
displayMessageOnOSD(osdMessage.c_str());
}
#endif
bool OpenGLSdlGraphicsManager::isHotkey(const Common::Event &event) {
if ((event.kbd.flags & (Common::KBD_CTRL|Common::KBD_ALT)) == (Common::KBD_CTRL|Common::KBD_ALT)) {
if (event.kbd.keycode == Common::KEYCODE_PLUS || event.kbd.keycode == Common::KEYCODE_MINUS ||
event.kbd.keycode == Common::KEYCODE_KP_PLUS || event.kbd.keycode == Common::KEYCODE_KP_MINUS ||
event.kbd.keycode == 'a' || event.kbd.keycode == 'f')
return true;
} else if ((event.kbd.flags & (Common::KBD_CTRL|Common::KBD_SHIFT)) == (Common::KBD_CTRL|Common::KBD_SHIFT)) {
if (event.kbd.keycode == 'a' || event.kbd.keycode == 'f')
return true;
} else if ((event.kbd.flags & (Common::KBD_ALT)) == (Common::KBD_ALT) && event.kbd.keycode == 's') {
return true;
}
return false;
}
void OpenGLSdlGraphicsManager::toggleFullScreen(int loop) {
beginGFXTransaction();
const bool isFullscreen = getFullscreenMode();
if (isFullscreen && loop) {
_activeFullscreenMode += loop;
setFullscreenMode(true);
} else {
_activeFullscreenMode = -2;
setFullscreenMode(!isFullscreen);
}
// HACK: We need to force a refresh here, since we change the
// fullscreen mode.
_transactionDetails.needRefresh = true;
endGFXTransaction();
// Ignore resize events for the next 10 frames
_ignoreResizeFrames = 10;
#ifdef USE_OSD
Common::String osdMessage;
if (getFullscreenMode())
osdMessage = Common::String::format("%s\n%d x %d",
_("Fullscreen mode"),
_hwscreen->w, _hwscreen->h
);
else
osdMessage = Common::String::format("%s\n%d x %d",
_("Windowed mode"),
_hwscreen->w, _hwscreen->h
);
displayMessageOnOSD(osdMessage.c_str());
#endif
}
bool OpenGLSdlGraphicsManager::notifyEvent(const Common::Event &event) {
switch (event.type) {
case Common::EVENT_KEYDOWN:
if (event.kbd.hasFlags(Common::KBD_ALT)) {
// Alt-Return and Alt-Enter toggle full screen mode
if (event.kbd.keycode == Common::KEYCODE_RETURN ||
event.kbd.keycode == (Common::KeyCode)SDLK_KP_ENTER) {
toggleFullScreen(0);
return true;
}
// Alt-S create a screenshot
if (event.kbd.keycode == 's') {
Common::String filename;
for (int n = 0;; n++) {
SDL_RWops *file;
filename = Common::String::format("scummvm%05d.bmp", n);
file = SDL_RWFromFile(filename.c_str(), "r");
if (!file)
break;
SDL_RWclose(file);
}
if (saveScreenshot(filename.c_str()))
debug("Saved screenshot '%s'", filename.c_str());
else
warning("Could not save screenshot");
return true;
}
}
if (event.kbd.hasFlags(Common::KBD_CTRL|Common::KBD_ALT)) {
// Ctrl-Alt-Return and Ctrl-Alt-Enter switch between full screen modes
if (event.kbd.keycode == Common::KEYCODE_RETURN ||
event.kbd.keycode == (Common::KeyCode)SDLK_KP_ENTER) {
toggleFullScreen(1);
return true;
}
// Ctrl-Alt-a switch between display modes
if (event.kbd.keycode == 'a') {
beginGFXTransaction();
setFeatureState(OSystem::kFeatureAspectRatioCorrection, !getFeatureState(OSystem::kFeatureAspectRatioCorrection));
endGFXTransaction();
#ifdef USE_OSD
Common::String osdMessage;
if (getFeatureState(OSystem::kFeatureAspectRatioCorrection))
osdMessage = Common::String::format("%s\n%d x %d -> %d x %d",
_("Enabled aspect ratio correction"),
_videoMode.screenWidth, _videoMode.screenHeight,
_hwscreen->w, _hwscreen->h);
else
osdMessage = Common::String::format("%s\n%d x %d -> %d x %d",
_("Disabled aspect ratio correction"),
_videoMode.screenWidth, _videoMode.screenHeight,
_hwscreen->w, _hwscreen->h);
displayMessageOnOSD(osdMessage.c_str());
#endif
internUpdateScreen();
return true;
}
// Ctrl-Alt-f toggles antialiasing
if (event.kbd.keycode == 'f') {
beginGFXTransaction();
toggleAntialiasing();
endGFXTransaction();
#ifdef USE_OSD
// TODO: This makes guesses about what internal antialiasing
// modes we use, we might want to consider a better way of
// displaying information to the user.
if (getAntialiasingState())
displayMessageOnOSD(_("Active filter mode: Linear"));
else
displayMessageOnOSD(_("Active filter mode: Nearest"));
#endif
return true;
}
SDLKey sdlKey = (SDLKey)event.kbd.keycode;
// Ctrl+Alt+Plus/Minus Increase/decrease the scale factor
if ((sdlKey == SDLK_EQUALS || sdlKey == SDLK_PLUS || sdlKey == SDLK_MINUS ||
sdlKey == SDLK_KP_PLUS || sdlKey == SDLK_KP_MINUS)) {
int factor = getScale();
factor += (sdlKey == SDLK_MINUS || sdlKey == SDLK_KP_MINUS) ? -1 : +1;
if (0 < factor && factor < 4) {
// Check if the desktop resolution has been detected
if (_desktopWidth > 0 && _desktopHeight > 0)
// If the new scale factor is too big, do not scale
if (_videoMode.screenWidth * factor > _desktopWidth ||
_videoMode.screenHeight * factor > _desktopHeight)
return false;
beginGFXTransaction();
setScale(factor);
endGFXTransaction();
#ifdef USE_OSD
displayScaleChangedMsg();
#endif
return true;
}
}
const bool isNormalNumber = (SDLK_1 <= sdlKey && sdlKey <= SDLK_3);
const bool isKeypadNumber = (SDLK_KP1 <= sdlKey && sdlKey <= SDLK_KP3);
// Ctrl-Alt-<number key> will change the GFX mode
if (isNormalNumber || isKeypadNumber) {
if (sdlKey - (isNormalNumber ? SDLK_1 : SDLK_KP1) <= 3) {
#ifdef USE_OSD
int lastMode = _videoMode.mode;
#endif
// We need to query the scale and set it up, because
// setGraphicsMode sets the default scale to 2
int oldScale = getScale();
beginGFXTransaction();
setGraphicsMode(sdlKey - (isNormalNumber ? SDLK_1 : SDLK_KP1));
setScale(oldScale);
endGFXTransaction();
#ifdef USE_OSD
if (lastMode != _videoMode.mode)
displayModeChangedMsg();
#endif
internUpdateScreen();
}
}
}
if (event.kbd.hasFlags(Common::KBD_CTRL|Common::KBD_SHIFT)) {
// Ctrl-Shift-Return and Ctrl-Shift-Enter switch backwards between full screen modes
if (event.kbd.keycode == Common::KEYCODE_RETURN ||
event.kbd.keycode == (Common::KeyCode)SDLK_KP_ENTER) {
toggleFullScreen(-1);
return true;
}
}
break;
case Common::EVENT_KEYUP:
return isHotkey(event);
default:
break;
}
return false;
}
void OpenGLSdlGraphicsManager::notifyVideoExpose() {
}
void OpenGLSdlGraphicsManager::notifyResize(const uint width, const uint height) {
// Do not resize if ignoring resize events.
if (!_ignoreResizeFrames && !getFullscreenMode()) {
bool scaleChanged = false;
beginGFXTransaction();
_videoMode.hardwareWidth = width;
_videoMode.hardwareHeight = height;
_screenResized = true;
int scale = MIN(_videoMode.hardwareWidth / _videoMode.screenWidth,
_videoMode.hardwareHeight / _videoMode.screenHeight);
if (getScale() != scale) {
scaleChanged = true;
setScale(MAX(MIN(scale, 3), 1));
}
_transactionDetails.sizeChanged = true;
endGFXTransaction();
#ifdef USE_OSD
if (scaleChanged)
displayScaleChangedMsg();
#endif
}
}
void OpenGLSdlGraphicsManager::transformMouseCoordinates(Common::Point &point) {
adjustMousePosition(point.x, point.y);
}
void OpenGLSdlGraphicsManager::notifyMousePos(Common::Point mouse) {
setMousePosition(mouse.x, mouse.y);
}
#endif
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