yum-mirror/slang

Making it easier to work with shaders

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Yong HeFix scalar to array conversion for tessellation factors (#7837)b16d4e955

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1//TEST:SIMPLE(filecheck=CHECK): -target spirv -stage hull -entry hullMain -warnings-disable 39001
2
3// Test for issue #7000: scalar tessellation factors should convert to arrays properly
4
5struct VSOutput
6{
7    float4 Pos : SV_POSITION;
8    float3 Normal;
9    float2 UV;
10};
11
12struct HSOutput
13{
14    float4 Pos : SV_POSITION;
15    float3 Normal;
16    float2 UV;
17};
18
19struct ConstantsHSOutput
20{
21    float TessLevelOuter[3] : SV_TessFactor;
22    float TessLevelInner : SV_InsideTessFactor;  // Scalar (should convert to float[2] for GLSL)
23};
24
25ConstantsHSOutput ConstantsHS()
26{
27    ConstantsHSOutput output;
28    output.TessLevelInner = 4.0;
29    output.TessLevelOuter[0] = 4.0;
30    output.TessLevelOuter[1] = 4.0;
31    output.TessLevelOuter[2] = 4.0;
32    return output;
33}
34
35[shader("hull")]
36[domain("tri")]
37[partitioning("integer")]
38[outputtopology("triangle_cw")]
39[outputcontrolpoints(3)]
40[patchconstantfunc("ConstantsHS")]
41HSOutput hullMain(InputPatch<VSOutput, 3> patch, uint InvocationID: SV_OutputControlPointID)
42{
43    HSOutput output;
44    output.Pos = patch[InvocationID].Pos;
45    output.Normal = patch[InvocationID].Normal;
46    output.UV = patch[InvocationID].UV;
47    return output;
48}
49
50// CHECK: OpExecutionMode
51// CHECK-DAG: OpDecorate {{.*}} BuiltIn TessLevelInner
52// CHECK-DAG: OpDecorate {{.*}} BuiltIn TessLevelOuter