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[ShaderCompiler] Reserve a clip plane for position exports

This commit is contained in:
ParantezTech 2026-10-05 18:38:07 +03:00
parent 34a2801a04
commit b56d0da86d
1 changed files with 9 additions and 0 deletions
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9
src/SharpEmu.ShaderCompiler.Vulkan/Gen5SpirvTranslator.cs
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@ -185,6 +185,7 @@ public static partial class Gen5SpirvTranslator
private uint _layerOutput;
private uint _viewportIndexOutput;
private uint _clipDistanceCount;
private uint _invalidPositionClipDistance = uint.MaxValue;
private uint _cullDistanceCount;
private uint _vertexIndexInput;
private uint _instanceIndexInput;
@ -6696,6 +6697,14 @@ public static partial class Gen5SpirvTranslator
}
}
if (_request.SupportsClipDistance && clipCount + cullCount < 8 &&
_request.Program.Instructions.Any(static instruction =>
instruction.Control is Gen5ExportControl { Target: 12, EnableMask: not 0 }))
{
// Use a separate plane so auxiliary position exports keep their own distances.
_invalidPositionClipDistance = clipCount++;
}
if (needPointSize)
{
_pointSizeOutput = DeclareBuiltInOutput(