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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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32
include/renderer_mtl/mtl_pipeline_cache.hpp
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@ -7,8 +7,13 @@ using namespace PICA;
namespace Metal {
struct PipelineHash {
// Formats
ColorFmt colorFmt;
DepthFmt depthFmt;
// Blending
bool blendEnabled;
u32 blendControl;
};
// Bind the vertex buffer to binding 30 so that it doesn't occupy the lower indices
@ -34,7 +39,7 @@ public:
}
MTL::RenderPipelineState* get(PipelineHash hash) {
u8 intHash = (u8)hash.colorFmt << 4 | (u8)hash.depthFmt;
u64 intHash = ((u64)hash.colorFmt << 36) | ((u64)hash.depthFmt << 33) | ((u64)hash.blendEnabled << 32) | (u64)hash.blendControl;
auto& pipeline = pipelineCache[intHash];
if (!pipeline) {
MTL::RenderPipelineDescriptor* desc = MTL::RenderPipelineDescriptor::alloc()->init();
@ -44,11 +49,24 @@ public:
auto colorAttachment = desc->colorAttachments()->object(0);
colorAttachment->setPixelFormat(toMTLPixelFormatColor(hash.colorFmt));
colorAttachment->setBlendingEnabled(true);
colorAttachment->setSourceRGBBlendFactor(MTL::BlendFactorSourceAlpha);
colorAttachment->setDestinationRGBBlendFactor(MTL::BlendFactorOneMinusSourceAlpha);
colorAttachment->setSourceAlphaBlendFactor(MTL::BlendFactorSourceAlpha);
colorAttachment->setDestinationAlphaBlendFactor(MTL::BlendFactorOneMinusSourceAlpha);
if (hash.blendEnabled) {
const u8 rgbEquation = hash.blendControl & 0x7;
const u8 alphaEquation = Helpers::getBits<8, 3>(hash.blendControl);
// Get blending functions
const u8 rgbSourceFunc = Helpers::getBits<16, 4>(hash.blendControl);
const u8 rgbDestFunc = Helpers::getBits<20, 4>(hash.blendControl);
const u8 alphaSourceFunc = Helpers::getBits<24, 4>(hash.blendControl);
const u8 alphaDestFunc = Helpers::getBits<28, 4>(hash.blendControl);
colorAttachment->setBlendingEnabled(true);
colorAttachment->setRgbBlendOperation(toMTLBlendOperation(rgbEquation));
colorAttachment->setAlphaBlendOperation(toMTLBlendOperation(alphaEquation));
colorAttachment->setSourceRGBBlendFactor(toMTLBlendFactor(rgbSourceFunc));
colorAttachment->setDestinationRGBBlendFactor(toMTLBlendFactor(rgbDestFunc));
colorAttachment->setSourceAlphaBlendFactor(toMTLBlendFactor(alphaSourceFunc));
colorAttachment->setDestinationAlphaBlendFactor(toMTLBlendFactor(alphaDestFunc));
}
desc->setDepthAttachmentPixelFormat(toMTLPixelFormatDepth(hash.depthFmt));
@ -72,7 +90,7 @@ public:
}
private:
std::unordered_map<u8, MTL::RenderPipelineState*> pipelineCache;
std::unordered_map<u64, MTL::RenderPipelineState*> pipelineCache;
MTL::Device* device;
MTL::Function* vertexFunction;