yum-mirror/slang

Making it easier to work with shaders

git clone https://git.yummers.dev/yum-mirror/slang

James Helferty (NVIDIA)render-test: Change D3D12 default to sm_6_5 (#8320)f02b08490

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1//TEST(compute):COMPARE_COMPUTE_EX(filecheck-buffer=CHECK): -task -output-using-type -dx12 -profile sm_6_6 -render-features mesh-shader
2//TEST(compute):COMPARE_COMPUTE_EX(filecheck-buffer=CHECK): -task -output-using-type -vk -profile sm_6_5 -render-features mesh-shader
3
4// Similar to task-simple, except that the payload is declared as a groupshared
5// variable. During lowerin to GLSL and SPIR-V we'll have to identify this as
6// the variable being passed to DispatchMesh and emit it using the
7// taskPayloadSharedEXT rate.
8
9// CHECK:      0
10// CHECK-NEXT: 1
11// CHECK-NEXT: 8
12// CHECK-NEXT: 27
13
14//TEST_INPUT: ubuffer(data=[0 0 0 0], stride=4):out,name outputBuffer
15
16RWStructuredBuffer<float> outputBuffer;
17
18cbuffer Uniforms
19{
20    float4x4 modelViewProjection;
21}
22
23//
24// Task shader
25//
26
27struct MeshPayload
28{
29    int exponent;
30};
31
32groupshared MeshPayload p;
33
34[numthreads(1, 1, 1)]
35[shader("amplification")]
36void taskMain(in uint tig : SV_GroupIndex)
37{
38    p.exponent = 3;
39    DispatchMesh(1,1,1,p);
40}
41
42
43//
44// Mesh shader
45//
46
47const static float2 positions[3] = {
48  float2(0.0, -0.5),
49  float2(0.5, 0.5),
50  float2(-0.5, 0.5)
51};
52
53const static float3 colors[3] = {
54  float3(1.0, 1.0, 0.0),
55  float3(0.0, 1.0, 1.0),
56  float3(1.0, 0.0, 1.0)
57};
58
59struct Vertex
60{
61  float4 pos : SV_Position;
62  float3 color : Color;
63  int index : Index;
64  int value : Value;
65};
66
67const static uint MAX_VERTS = 12;
68const static uint MAX_PRIMS = 4;
69
70[outputtopology("triangle")]
71[numthreads(12, 1, 1)]
72void meshMain(
73    in uint tig : SV_GroupIndex,
74    in payload MeshPayload meshPayload,
75    OutputVertices<Vertex, MAX_VERTS> verts,
76    OutputIndices<uint3, MAX_PRIMS> triangles)
77{
78    const uint numVertices = 12;
79    const uint numPrimitives = 4;
80    SetMeshOutputCounts(numVertices, numPrimitives);
81
82    if(tig < numVertices)
83    {
84        const int tri = tig / 3;
85        verts[tig] = {float4(positions[tig % 3], 0, 1), colors[tig % 3], tri, int(pow(tri, meshPayload.exponent))};
86    }
87
88    if(tig < numPrimitives)
89        triangles[tig] = tig * 3 + uint3(0,1,2);
90}
91
92//
93// Fragment Shader
94//
95
96struct Fragment
97{
98    float4 color : SV_Target;
99};
100
101Fragment fragmentMain(Vertex input)
102{
103    outputBuffer[input.index] = input.value;
104
105    Fragment output;
106    output.color = float4(input.color, 1.0);
107    return output;
108}
109