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gpu: fix separate alpha blending on swizzled render targets

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Co-authored-by: Çağatay Güçlü <33038942+defektu@users.noreply.github.com>
This commit is contained in:
nmzik
2026-10-04 21:46:38 +04:00
parent 45fab265d5
commit 0bef3fc0d3
11 changed files with 246 additions and 83 deletions
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src/graphics/host_gpu/renderer/pipeline/blendMapping.cpp
+9
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@@ -30,6 +30,15 @@ BlendMappingSupport ClassifyBlendMapping(const HW::BlendControl&
if (mapping.Map(3) == 3u) {
return BlendMappingSupport::Direct;
}
if (blend.separate_alpha_blend &&
blend.color_srcblend == static_cast<uint8_t>(Prospero::BlendFactor::kSrcAlpha) &&
blend.alpha_srcblend == static_cast<uint8_t>(Prospero::BlendFactor::kOne) &&
blend.color_destblend == static_cast<uint8_t>(Prospero::BlendFactor::kOneMinusSrcAlpha) &&
blend.alpha_destblend == blend.color_destblend &&
blend.color_comb_fcn == static_cast<uint8_t>(Prospero::BlendOp::kAdd) &&
blend.alpha_comb_fcn == blend.color_comb_fcn) {
return BlendMappingSupport::SourceAlphaOne;
}
// Moving alpha requires the same equation for all channels.
if (blend.separate_alpha_blend && (blend.alpha_srcblend != blend.color_srcblend ||
blend.alpha_destblend != blend.color_destblend ||