Test/spv.meshShaderRedeclBuiltins.mesh

   1 #version 460
   2
   3 #define MAX_VER  81
   4 #define MAX_PRIM 32
   5
   6 #define BARRIER() \
   7     memoryBarrierShared(); \
   8     barrier();
   9
  10 #extension GL_NV_mesh_shader : enable
  11
  12 layout(local_size_x = 32) in;
  13
  14 layout(max_vertices=MAX_VER) out;
  15 layout(max_primitives=MAX_PRIM) out;
  16 layout(triangles) out;
  17
  18 // test use of redeclared single-view builtins in mesh shaders:
  19
  20 out gl_MeshPerVertexNV {
  21     vec4 gl_Position;
  22     float gl_PointSize;
  23     float gl_ClipDistance[4];
  24     float gl_CullDistance[4];
  25 } gl_MeshVerticesNV[MAX_VER];                   // explicitly sized to MAX_VER
  26
  27 perprimitiveNV out gl_MeshPerPrimitiveNV {
  28     int gl_PrimitiveID;
  29     int gl_Layer;
  30     int gl_ViewportIndex;
  31     int gl_ViewportMask[];
  32 } gl_MeshPrimitivesNV[];                        // implicitly sized to MAX_PRIM
  33
  34 out uint gl_PrimitiveIndicesNV[MAX_PRIM*3];     // explicitly sized to MAX_PRIM * 3
  35
  36 void main()
  37 {
  38     uint iid = gl_LocalInvocationID.x;
  39     uint gid = gl_WorkGroupID.x;
  40
  41     gl_MeshVerticesNV[iid].gl_Position = vec4(1.0);
  42     gl_MeshVerticesNV[iid].gl_PointSize = 2.0;
  43     gl_MeshVerticesNV[iid].gl_ClipDistance[3] = 3.0;
  44     gl_MeshVerticesNV[iid].gl_CullDistance[2] = 4.0;
  45
  46     BARRIER();
  47
  48     gl_MeshVerticesNV[iid+1].gl_Position = gl_MeshVerticesNV[iid].gl_Position;
  49     gl_MeshVerticesNV[iid+1].gl_PointSize = gl_MeshVerticesNV[iid].gl_PointSize;
  50     gl_MeshVerticesNV[iid+1].gl_ClipDistance[3] = gl_MeshVerticesNV[iid].gl_ClipDistance[3];
  51     gl_MeshVerticesNV[iid+1].gl_CullDistance[2] = gl_MeshVerticesNV[iid].gl_CullDistance[2];
  52
  53     BARRIER();
  54
  55     gl_MeshPrimitivesNV[iid].gl_PrimitiveID = 6;
  56     gl_MeshPrimitivesNV[iid].gl_Layer = 7;
  57     gl_MeshPrimitivesNV[iid].gl_ViewportIndex = 8;
  58     gl_MeshPrimitivesNV[iid].gl_ViewportMask[0] = 9;
  59
  60     BARRIER();
  61
  62     gl_MeshPrimitivesNV[iid+1].gl_PrimitiveID = gl_MeshPrimitivesNV[iid].gl_PrimitiveID;
  63     gl_MeshPrimitivesNV[iid+1].gl_Layer = gl_MeshPrimitivesNV[iid].gl_Layer;
  64     gl_MeshPrimitivesNV[iid+1].gl_ViewportIndex = gl_MeshPrimitivesNV[iid].gl_ViewportIndex;
  65     gl_MeshPrimitivesNV[iid+1].gl_ViewportMask[0] = gl_MeshPrimitivesNV[iid].gl_ViewportMask[0];
  66
  67     BARRIER();
  68
  69     // check bound limits
  70     gl_PrimitiveIndicesNV[0] = 1;
  71     gl_PrimitiveIndicesNV[(MAX_PRIM * 3) - 1] = 2;
  72     gl_PrimitiveCountNV = MAX_PRIM * 3;
  73 }