yum-mirror/slang

Making it easier to work with shaders

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davli-nvFix noperspective modifier for SV_Barycentrics in SPIRV and GLSL (#8067)5074c4948

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1// get-attribute-at-vertex-struct.slang
2
3// Test GetAttributeAtVertex and SV_Barycentrics on struct members
4
5//TEST:SIMPLE(filecheck=CHECK-SPIRV):-target spirv -entry main -stage fragment -profile glsl_450+GL_EXT_fragment_shader_barycentric
6//TEST:SIMPLE(filecheck=CHECK-GLSL):-target glsl -entry main -stage fragment -profile glsl_450+GL_EXT_fragment_shader_barycentric
7
8// CHECK-SPIRV: OpCapability FragmentBarycentricKHR
9// CHECK-SPIRV: OpExtension "SPV_KHR_fragment_shader_barycentric"
10
11// CHECK-SPIRV: OpEntryPoint Fragment %main "main"
12// CHECK-SPIRV: OpDecorate %{{.*}} BuiltIn BaryCoordKHR
13// CHECK-SPIRV: OpDecorate %{{.*}} BuiltIn BaryCoordNoPerspKHR
14// CHECK-SPIRV: %{{.*}} = OpAccessChain %_ptr_Input_{{.*}} %{{.*}} %uint_0
15// CHECK-SPIRV: %{{.*}} = OpAccessChain %_ptr_Input_{{.*}} %{{.*}} %uint_1
16// CHECK-SPIRV: %{{.*}} = OpAccessChain %_ptr_Input_{{.*}} %{{.*}} %uint_2
17
18// CHECK-GLSL: #extension GL_EXT_fragment_shader_barycentric : require
19// CHECK-GLSL-DAG: gl_BaryCoordEXT
20// CHECK-GLSL-DAG: gl_BaryCoordNoPerspEXT
21
22struct Input
23{
24    pervertex float4 color : COLOR;
25    float3 bary : SV_Barycentrics;
26    noperspective float3 baryNoPerspective : SV_Barycentrics;
27}
28
29[shader("fragment")]
30void main(
31    Input input,
32    out float4 result : SV_Target)
33{
34    result = input.bary.x * GetAttributeAtVertex(input.color, 0)
35        + input.bary.y * GetAttributeAtVertex(input.color, 1)
36        + input.bary.z * GetAttributeAtVertex(input.color, 2)
37        + input.baryNoPerspective.x * 0.1f;
38}