glslang/Test/hlsl.clipdistance-6.frag
LoopDawg e2cda3c2d7 HLSL: handle clip and cull distance input builtin type conversion
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.
2017-08-24 08:35:40 -06:00

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GLSL

struct VS_OUTPUT {
float4 Position : SV_Position;
float4 clip0 : SV_ClipDistance0; // multiple semantic IDs, two vec4s (no extra packing)
float4 clip1 : SV_ClipDistance1; // ...
};
float4 main(VS_OUTPUT v) : SV_Target0
{
return v.Position + v.clip0 + v.clip1;
}