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Making it easier to work with shaders

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Harsh Aggarwal (NVIDIA)cluster acceleration structure optix 6431 (#7028)64a43b17a

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1//TEST:SIMPLE(filecheck=CHECK_GLSL): -allow-glsl -stage anyhit -entry main -target glsl -capability GL_EXT_ray_tracing -capability GL_NV_cluster_acceleration_structure
2
3//TEST:SIMPLE(filecheck=CHECK_SPV): -allow-glsl -emit-spirv-directly -stage anyhit -entry main -target spirv-assembly -capability SPV_KHR_ray_tracing -capability SPV_NV_cluster_acceleration_structure
4
5// CHECK_GLSL: #extension GL_EXT_ray_tracing : require
6// CHECK_GLSL: #extension GL_NV_cluster_acceleration_structure : require
7__glsl_extension(GL_EXT_ray_tracing)
8__glsl_extension(GL_NV_cluster_acceleration_structure)
9
10layout(binding = 0) uniform accelerationStructureEXT as;
11
12//TEST_INPUT:ubuffer(data=[0], stride=4):out,name=outBuffer
13//TEST_INPUT:end
14
15// This test demonstrates the usage of cluster acceleration structure intrinsics
16// in ray tracing for the NVIDIA extension.
17
18void main()
19{
20    // CHECK_GLSL-DAG: gl_ClusterIDNV
21    // CHECK_SPV-DAG: ClusterIDNV
22
23    // Get the cluster ID of the current hit
24    int clusterId = gl_ClusterIDNV;
25
26    // Check if the hit is part of a cluster
27    bool isClusterHit = (clusterId != gl_ClusterIDNoneNV);
28
29    // Skip hits for certain cluster IDs (example: skip cluster ID 5)
30    if (isClusterHit && clusterId == 5)
31    {
32        ignoreIntersectionEXT;
33    }
34}