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Merge pull request #364 from wheremyfoodat/x64-shader-derp

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Fix cmp in x64 shader JIT
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wheremyfoodat 2024-01-04 03:51:52 +02:00 • committed by GitHub
commit 87ad45788d
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1 changed files with 11 additions and 4 deletions
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15
src/core/PICA/dynapica/shader_rec_emitter_x64.cpp
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@ -403,11 +403,18 @@ void ShaderEmitter::checkCmpRegister(const PICAShader& shader, u32 instruction)
switch (condition) { switch (condition) {
case 0: // Either cmp register matches case 0: // Either cmp register matches
// Z flag is 0 if at least 1 of them is set // Z flag is 0 if at least 1 of them is set
test(word[statePointer + cmpRegXOffset], refX_refY_merged);
// Invert z flag // Check if X matches
setz(al); cmp(byte[statePointer + cmpRegXOffset], refX);
test(al, al); sete(al);
// Or if Y matches
cmp(byte[statePointer + cmpRegYOffset], refY);
sete(cl);
or_(al, cl);
// If either of them matches, set Z to 1, else set it to 0
xor_(al, 1);
break; break;
case 1: // Both cmp registers match case 1: // Both cmp registers match
cmp(word[statePointer + cmpRegXOffset], refX_refY_merged); cmp(word[statePointer + cmpRegXOffset], refX_refY_merged);