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softjit: Fix dithering bug.

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Unknown W. Brackets 2021-11-24 22:48:20 -08:00
parent 3f3e0ea8cf
commit cf888257ab
1 changed files with 2 additions and 1 deletions
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3
GPU/Software/DrawPixelX86.cpp
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@ -953,7 +953,7 @@ bool PixelJitCache::Jit_Dither(const PixelFuncID &id) {
// Load the row dither matrix entry (will still need to get the X.)
MOV(32, R(valueReg), R(argYReg));
AND(8, R(valueReg), Imm8(3));
AND(32, R(valueReg), Imm8(3));
MOVZX(32, 16, valueReg, MComplex(gstateReg, valueReg, 4, offsetof(GPUgstate, dithmtx)));
regCache_.Unlock(gstateReg, PixelRegCache::T_GEN);
@ -990,6 +990,7 @@ bool PixelJitCache::Jit_Dither(const PixelFuncID &id) {
// Now we need to make 0-7 positive, 8-F negative.. so sign extend.
SHL(32, R(valueReg), Imm8(4));
MOVSX(32, 8, valueReg, R(valueReg));
SAR(8, R(valueReg), Imm8(4));
// Copy that value into a vec to add to the color.