diff options
Diffstat (limited to 'backends/platform/sdl/graphics.cpp')
| -rw-r--r-- | backends/platform/sdl/graphics.cpp | 58 |
1 files changed, 53 insertions, 5 deletions
diff --git a/backends/platform/sdl/graphics.cpp b/backends/platform/sdl/graphics.cpp index ffdcd675e6..b207f4c2af 100644 --- a/backends/platform/sdl/graphics.cpp +++ b/backends/platform/sdl/graphics.cpp @@ -358,6 +358,50 @@ void OSystem_SDL::initSize(uint w, uint h) { _dirtyChecksums = (uint32 *)calloc(_cksumNum * 2, sizeof(uint32)); } + +static void fixupResolutionForAspectRatio(AspectRatio desiredAspectRatio, int &width, int &height) { + assert(&width != &height); + + if (desiredAspectRatio.isAuto()) + return; + + int kw = desiredAspectRatio.kw(); + int kh = desiredAspectRatio.kh(); + + const int w = width; + const int h = height; + + SDL_Rect const* const*availableModes = SDL_ListModes(NULL, SDL_FULLSCREEN|SDL_SWSURFACE); //TODO : Maybe specify a pixel format + assert(availableModes); + + const SDL_Rect *bestMode = NULL; + uint bestMetric = (uint)-1; // Metric is wasted space + while (const SDL_Rect *mode = *availableModes++) { + if (mode->w < w) + continue; + if (mode->h < h) + continue; + if (mode->h * kw != mode->w * kh) + continue; + //printf("%d %d\n", mode->w, mode->h); + + uint metric = mode->w * mode->h - w * h; + if (metric > bestMetric) + continue; + + bestMetric = metric; + bestMode = mode; + } + + if (!bestMode) { + warning("Unable to enforce the desired aspect ratio!"); + return; + } + //printf("%d %d\n", bestMode->w, bestMode->h); + width = bestMode->w; + height = bestMode->h; +} + bool OSystem_SDL::loadGFXMode() { assert(_inited); _forceFull = true; @@ -374,11 +418,11 @@ bool OSystem_SDL::loadGFXMode() { if (_videoMode.aspectRatioCorrection) _videoMode.overlayHeight = real2Aspect(_videoMode.overlayHeight); - hwW = _videoMode.screenWidth * _videoMode.scaleFactor; - hwH = effectiveScreenHeight(); + _videoMode.hardwareWidth = _videoMode.screenWidth * _videoMode.scaleFactor; + _videoMode.hardwareHeight = effectiveScreenHeight(); #else - hwW = _videoMode.overlayWidth; - hwH = _videoMode.overlayHeight; + _videoMode.hardwareWidth = _videoMode.overlayWidth; + _videoMode.hardwareHeight = _videoMode.overlayHeight; #endif // @@ -392,7 +436,11 @@ bool OSystem_SDL::loadGFXMode() { // Create the surface that contains the scaled graphics in 16 bit mode // - _hwscreen = SDL_SetVideoMode(hwW, hwH, 16, + if(_videoMode.fullscreen) { + fixupResolutionForAspectRatio(_videoMode.desiredAspectRatio, _videoMode.hardwareWidth, _videoMode.hardwareHeight); + } + + _hwscreen = SDL_SetVideoMode(_videoMode.hardwareWidth, _videoMode.hardwareHeight, 16, _videoMode.fullscreen ? (SDL_FULLSCREEN|SDL_SWSURFACE) : SDL_SWSURFACE ); if (_hwscreen == NULL) { |