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Merge pull request #1399 from billhollings/e5b9g9r9-disable-blending

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Disable blending for VK_FORMAT_E5B9G9R9_UFLOAT_PACK32 on macOS Apple Silicon.
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Bill Hollings 2021-07-08 22:18:00 -04:00 committed by GitHub
commit a7ffaad975
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2 changed files with 5 additions and 0 deletions
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2
Docs/Whats_New.md
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@ -20,6 +20,8 @@ Released TBD
- Fix incorrect translation of clear color values on Apple Silicon.
- Fix swizzle of depth and stencil values into RGBA (`float4`) variable in shaders.
- Disable `VK_FORMAT_FEATURE_COLOR_ATTACHMENT_BLEND_BIT` for
`VK_FORMAT_E5B9G9R9_UFLOAT_PACK32` on macOS Apple Silicon.

3
MoltenVK/MoltenVK/GPUObjects/MVKPixelFormats.mm
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@ -1546,7 +1546,10 @@ void MVKPixelFormats::modifyMTLFormatCapabilities(id<MTLDevice> mtlDevice) {
addGPUOSMTLPixFmtCaps( Apple5, 10.16, RGBA8Unorm_sRGB, All );
addGPUOSMTLPixFmtCaps( Apple5, 10.16, BGRA8Unorm_sRGB, All );
// Blending is actually supported for this format, but format channels cannot be individually write-enabled during blending.
// Disabling blending is the least-intrusive way to handle this in a Vulkan-friendly way.
addGPUOSMTLPixFmtCaps( Apple5, 10.16, RGB9E5Float, All );
disableMTLPixFmtCaps ( RGB9E5Float, Blend);
addGPUOSMTLPixFmtCaps( Apple5, 10.16, PVRTC_RGBA_2BPP, RF );
addGPUOSMTLPixFmtCaps( Apple5, 10.16, PVRTC_RGBA_2BPP_sRGB, RF );