yum-mirror/slang

Making it easier to work with shaders

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

kaizhangNVFeature/initialize list side branch (#6058)9ec6b9168

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1//DISABLE_TEST:SIMPLE(filecheck=HLSL): -target hlsl -stage compute -entry computeMain -zero-initialize
2//DISABLE_TEST:SIMPLE(filecheck=GLSL): -target glsl -stage compute -entry computeMain -zero-initialize
3
4// HLSL-NOT: RayQuery{{.*}} {{.*}} =
5// GLSL-NOT: rayQueryEXT {{.*}} =
6
7uniform RaytracingAccelerationStructure scene;
8RWStructuredBuffer<float> outputBuffer;
9
10bool traceRayClosestHit(
11    float3 rayOrigin,
12    float3 rayDir,
13    out float t)
14{
15    RayDesc ray;
16    ray.Origin = rayOrigin;
17    ray.TMin = 0.01f;
18    ray.Direction = rayDir;
19    ray.TMax = 1e4f;
20    RayQuery<RAY_FLAG_NONE> q;
21    let rayFlags = RAY_FLAG_NONE;
22
23    q.TraceRayInline(
24        scene,
25        rayFlags,
26        0xff,
27        ray);
28
29    q.Proceed();
30    if(q.CommittedStatus() == COMMITTED_TRIANGLE_HIT)
31    {
32        t = q.CommittedRayT();
33        return true;
34    }
35    unused(t);
36    return false;
37}
38
39[shader("compute")]
40[numthreads(1,1,1)]
41void computeMain(
42    uint3 threadIdx : SV_DispatchThreadID)
43{
44    float t = 0.0;
45    traceRayClosestHit(float3(0.1, 0.1, 0.0), float3(0,0,1), t);
46    outputBuffer[threadIdx.x] = t;
47}