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New attempt to generate FBO using fb_stride

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raven02 2013-07-15 21:49:43 +08:00
parent bb5a1e434c
commit 07e118b6a1
3 changed files with 19 additions and 21 deletions
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27
GPU/GLES/Framebuffer.cpp
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@ -376,19 +376,26 @@ void GetViewportDimensions(int &w, int &h) {
// Heuristics to figure out the size of FBO to create.
void GuessDrawingSize(int &drawing_width, int &drawing_height) {
int viewport_width, viewport_height;
int regionX2 = (gstate.getRegionX2() + 1) & ~1;
int regionY2 = (gstate.getRegionY2() + 1) & ~1;
int scissorX2 = (gstate.getScissorX2() + 1) & ~1;
int scissorY2 = (gstate.getScissorY2() + 1) & ~1;
int default_width = 480;
int default_height = 272;
int regionX2 = (gstate.getRegionX2() + 1) ;
int regionY2 = (gstate.getRegionY2() + 1) ;
int fb_stride = gstate.fbwidth & 0x3C0;
GetViewportDimensions(viewport_width, viewport_height);
if (viewport_width != 480 && viewport_height != 272) {
drawing_width = std::min(scissorX2, regionX2);
drawing_height = std::min(scissorY2, regionY2);
// Generated FBO shouldn't greate than 512x512
if ( viewport_width > 512 && viewport_height > 512 ) {
viewport_width = default_width;
viewport_height = default_height;
}
if (fb_stride < 512) {
drawing_width = std::min(viewport_width, regionX2);
drawing_height = std::min(viewport_height, regionY2);
} else {
drawing_width = viewport_width;
drawing_height = viewport_height;
}
drawing_width = std::max(viewport_width, default_width);
drawing_height = std::max(viewport_height, default_height);
}
}
void FramebufferManager::DestroyFramebuf(VirtualFramebuffer *v) {