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fixed single channel formats (#4435)

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georgemoralis 2026-06-14 12:43:49 +03:00 committed by GitHub
parent cc5d35dc08
commit 7ea310f825
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1 changed files with 18 additions and 0 deletions
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18
src/video_core/amdgpu/pixel_format.h
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@ -288,6 +288,24 @@ constexpr CompMapping RemapSwizzle(const DataFormat format, const CompMapping sw
result.a = swizzle.a;
return result;
}
case DataFormat::Format8:
case DataFormat::Format16:
case DataFormat::Format32: {
// PS4 single-channel formats expose the texel as either R or A depending on dst_sel,
// but Vulkan single-channel formats expose it only via R. Redirect any selector
// that points at Alpha to Red so the texel is read correctly.
CompMapping result = swizzle;
const auto remap_alpha_to_red = [](CompSwizzle& c) {
if (c == CompSwizzle::Alpha) {
c = CompSwizzle::Red;
}
};
remap_alpha_to_red(result.r);
remap_alpha_to_red(result.g);
remap_alpha_to_red(result.b);
remap_alpha_to_red(result.a);
return result;
}
default:
return swizzle;
}