e2cda3c2d7
HLSL allows a range of types for clip and cull distances. There are three dimensions, including arrayness, vectorness, and semantic ID. SPIR-V requires clip and cull distance be a single array of floats in all cases. This code provides input side conversion between the SPIR-V form and the HLSL form. (Output conversion was added in PR #947 and #997). This PR extends HlslParseContext::assignClipCullDistance to cope with the input side conversion. Not as much changed as appears: there was also a lot of renaming to reflect the fact that the code now handles either direction. Currently, non-{frag,vert} stages are not handled, and are explicitly rejected. Fixes #1026.
23 lines
540 B
GLSL
23 lines
540 B
GLSL
struct S {
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float4 pos : SV_Position;
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float clip : SV_ClipDistance0;
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float cull : SV_CullDistance0;
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};
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[maxvertexcount(3)]
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void main(triangle in float4 pos[3] : SV_Position,
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triangle in uint VertexID[3] : VertexID,
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inout LineStream<S> OutputStream,
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triangle in float clip[3] : SV_ClipDistance, // scalar float
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triangle in float cull[3] : SV_CullDistance) // scalar float
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{
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S s;
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s.pos = pos[0];
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s.clip = clip[0];
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s.cull = cull[0];
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OutputStream.Append(s);
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}
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