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This fixes stereoscopic 3D with XFB enabled, for example in the intro in Animal Crossing GameCube NTSC. 

The maths appears to give crazy impossible answers without this fix, but the cause is all the ints being "promoted" to unsigned because of the single unsigned division at the end.
This commit is contained in:
CarlKenner 2015-01-20 02:31:32 +10:30
parent 7454297820
commit 4768d0f0a8
2 changed files with 8 additions and 8 deletions
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8
Source/Core/VideoBackends/D3D/Render.cpp
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@ -743,10 +743,10 @@ void Renderer::SwapImpl(u32 xfbAddr, u32 fbWidth, u32 fbStride, u32 fbHeight, co
int xfbWidth = xfbSource->srcWidth;
int hOffset = ((s32)xfbSource->srcAddr - (s32)xfbAddr) / ((s32)fbStride * 2);
drawRc.top = targetRc.top + hOffset * targetRc.GetHeight() / fbHeight;
drawRc.bottom = targetRc.top + (hOffset + xfbHeight) * targetRc.GetHeight() / fbHeight;
drawRc.left = targetRc.left + (targetRc.GetWidth() - xfbWidth * targetRc.GetWidth() / fbStride) / 2;
drawRc.right = targetRc.left + (targetRc.GetWidth() + xfbWidth * targetRc.GetWidth() / fbStride) / 2;
drawRc.top = targetRc.top + hOffset * targetRc.GetHeight() / (s32)fbHeight;
drawRc.bottom = targetRc.top + (hOffset + xfbHeight) * targetRc.GetHeight() / (s32)fbHeight;
drawRc.left = targetRc.left + (targetRc.GetWidth() - xfbWidth * targetRc.GetWidth() / (s32)fbStride) / 2;
drawRc.right = targetRc.left + (targetRc.GetWidth() + xfbWidth * targetRc.GetWidth() / (s32)fbStride) / 2;
// The following code disables auto stretch. Kept for reference.
// scale draw area for a 1 to 1 pixel mapping with the draw target

8
Source/Core/VideoBackends/OGL/Render.cpp
View File

@ -1480,10 +1480,10 @@ void Renderer::SwapImpl(u32 xfbAddr, u32 fbWidth, u32 fbStride, u32 fbHeight, co
int xfbWidth = xfbSource->srcWidth;
int hOffset = ((s32)xfbSource->srcAddr - (s32)xfbAddr) / ((s32)fbStride * 2);
drawRc.top = flipped_trc.top - hOffset * flipped_trc.GetHeight() / fbHeight;
drawRc.bottom = flipped_trc.top - (hOffset + xfbHeight) * flipped_trc.GetHeight() / fbHeight;
drawRc.left = flipped_trc.left + (flipped_trc.GetWidth() - xfbWidth * flipped_trc.GetWidth() / fbStride) / 2;
drawRc.right = flipped_trc.left + (flipped_trc.GetWidth() + xfbWidth * flipped_trc.GetWidth() / fbStride) / 2;
drawRc.top = flipped_trc.top - hOffset * flipped_trc.GetHeight() / (s32)fbHeight;
drawRc.bottom = flipped_trc.top - (hOffset + xfbHeight) * flipped_trc.GetHeight() / (s32)fbHeight;
drawRc.left = flipped_trc.left + (flipped_trc.GetWidth() - xfbWidth * flipped_trc.GetWidth() / (s32)fbStride) / 2;
drawRc.right = flipped_trc.left + (flipped_trc.GetWidth() + xfbWidth * flipped_trc.GetWidth() / (s32)fbStride) / 2;
// The following code disables auto stretch. Kept for reference.
// scale draw area for a 1 to 1 pixel mapping with the draw target