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implement proper blending

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This commit is contained in:
Samuliak 2024-07-03 11:37:44 +02:00
parent da8f2ff45d
commit dff6f5bf3f
3 changed files with 81 additions and 8 deletions
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40
include/renderer_mtl/pica_to_mtl.hpp
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@ -41,4 +41,44 @@ inline MTL::CompareFunction toMTLCompareFunc(u8 func) {
return MTL::CompareFunctionAlways;
}
inline MTL::BlendOperation toMTLBlendOperation(u8 op) {
switch (op) {
case 0: return MTL::BlendOperationAdd;
case 1: return MTL::BlendOperationSubtract;
case 2: return MTL::BlendOperationReverseSubtract;
case 3: return MTL::BlendOperationMin;
case 4: return MTL::BlendOperationMax;
case 5: return MTL::BlendOperationAdd; // Unused (same as 0)
case 6: return MTL::BlendOperationAdd; // Unused (same as 0)
case 7: return MTL::BlendOperationAdd; // Unused (same as 0)
default: panic("Unknown blend operation %u", op);
}
return MTL::BlendOperationAdd;
}
inline MTL::BlendFactor toMTLBlendFactor(u8 factor) {
switch (factor) {
case 0: return MTL::BlendFactorZero;
case 1: return MTL::BlendFactorOne;
case 2: return MTL::BlendFactorSourceColor;
case 3: return MTL::BlendFactorOneMinusSourceColor;
case 4: return MTL::BlendFactorDestinationColor;
case 5: return MTL::BlendFactorOneMinusDestinationColor;
case 6: return MTL::BlendFactorSourceAlpha;
case 7: return MTL::BlendFactorOneMinusSourceAlpha;
case 8: return MTL::BlendFactorDestinationAlpha;
case 9: return MTL::BlendFactorOneMinusDestinationAlpha;
case 10: return MTL::BlendFactorBlendColor;
case 11: return MTL::BlendFactorOneMinusBlendColor;
case 12: return MTL::BlendFactorBlendAlpha;
case 13: return MTL::BlendFactorOneMinusBlendAlpha;
case 14: return MTL::BlendFactorSourceAlphaSaturated;
case 15: return MTL::BlendFactorOne; // Undocumented
default: panic("Unknown blend factor %u", factor);
}
return MTL::BlendFactorOne;
}
} // namespace PICA