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Fix wrong size generated of FBO for some games which uses it as render-to-texture

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raven02 committed 2013-08-12 02:20:55 +08:00
1 parent e03acc4c58
commit c2a86d647f
3 files changed
+47 -39
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GPU/GLES/Framebuffer.cpp
+26 -21
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@@ -375,35 +375,40 @@ VirtualFramebuffer *FramebufferManager::GetDisplayFBO() {
return 0;
}
void GetViewportDimensions(int &w, int &h) {
float vpXa = getFloat24(gstate.viewportx1);
float vpYa = getFloat24(gstate.viewporty1);
w = (int)fabsf(vpXa * 2);
h = (int)fabsf(vpYa * 2);
}
// Heuristics to figure out the size of FBO to create.
void GuessDrawingSize(int &drawing_width, int &drawing_height) {
int viewport_width, viewport_height;
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);
int viewport_width = (int) gstate.getViewportX1();
int viewport_height = (int) gstate.getViewportY1();
int region_width = (gstate.getRegionX2() + 1) ;
int region_height = (gstate.getRegionY2() + 1) ;
int fb_width = gstate.fbwidth & 0x3C0;
// Generated FBO shouldn't greate than 512x512
if ( viewport_width > 512 && viewport_height > 512 ) {
viewport_width = default_width;
viewport_height = default_height;
DEBUG_LOG(HLE,"Viewport : %ix%i, Region : %ix%i, Stride: %i", viewport_width,viewport_height, region_width, region_height, fb_width);
// Just in case viewport return as 0x0 like FF Type-0
if (viewport_width <= 1 && viewport_height <=1) {
drawing_width = default_width;
drawing_height = default_height;
}
if (fb_stride < 512) {
drawing_width = std::min(viewport_width, regionX2);
drawing_height = std::min(viewport_height, regionY2);
if (fb_width < 512) {
if (fb_width != viewport_width) {
drawing_width = viewport_width;
drawing_height = viewport_height;
} else {
drawing_width = region_width;
drawing_height = region_height;
}
} else {
drawing_width = std::max(viewport_width, default_width);
drawing_height = std::max(viewport_height, default_height);
if (fb_width != region_width) {
drawing_width = default_width;
drawing_height = default_height;
} else {
drawing_width = region_width;
drawing_height = region_height;
}
}
}