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Fix overflow that caused flickering when upscaling many games

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This commit is contained in:
Lionel Flandrin 2016-01-30 14:30:49 +01:00
parent 864d0fadfd
commit 7798e1e46f
1 changed files with 2 additions and 1 deletions
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3
mednafen/psx/gpu_common.cpp
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@ -1,7 +1,8 @@
template<int BlendMode, bool MaskEval_TA, bool textured>
INLINE void PS_GPU::PlotPixel(int32_t x, int32_t y, uint16_t fore_pix)
{
y &= 511; // More Y precision bits than GPU RAM installed in (non-arcade, at least) Playstation hardware.
// More Y precision bits than GPU RAM installed in (non-arcade, at least) Playstation hardware.
y &= (512 << UPSCALE_SHIFT) - 1;
if(BlendMode >= 0 && (fore_pix & 0x8000))
{