glslang/Test/spv.meshShaderBuiltins.mesh
Sahil Parmar ab027bef3d Fix resizing of gl_PrimitiveIndicesNV[] to max_primitives*geomSize
- This change also allows redeclaration of gl_PrimitiveIndicesNV and
  adds error checks against incorrect explicit array size.
- Also modifies gtests to check array bound limits and redeclare gl_PrimitiveIndicesNV[].
2019-02-11 15:15:33 -08:00

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#version 460
#define MAX_VER 81
#define MAX_PRIM 32
#define BARRIER() \
memoryBarrierShared(); \
barrier();
#extension GL_NV_mesh_shader : enable
layout(local_size_x = 32) in;
layout(max_vertices=MAX_VER) out;
layout(max_primitives=MAX_PRIM) out;
layout(triangles) out;
// test use of builtins in mesh shaders:
void main()
{
uint iid = gl_LocalInvocationID.x;
uint gid = gl_WorkGroupID.x;
gl_MeshVerticesNV[iid].gl_Position = vec4(1.0);
gl_MeshVerticesNV[iid].gl_PointSize = 2.0;
gl_MeshVerticesNV[iid].gl_ClipDistance[3] = 3.0;
gl_MeshVerticesNV[iid].gl_CullDistance[2] = 4.0;
BARRIER();
gl_MeshVerticesNV[iid+1].gl_Position = gl_MeshVerticesNV[iid].gl_Position;
gl_MeshVerticesNV[iid+1].gl_PointSize = gl_MeshVerticesNV[iid].gl_PointSize;
gl_MeshVerticesNV[iid+1].gl_ClipDistance[3] = gl_MeshVerticesNV[iid].gl_ClipDistance[3];
gl_MeshVerticesNV[iid+1].gl_CullDistance[2] = gl_MeshVerticesNV[iid].gl_CullDistance[2];
BARRIER();
gl_MeshPrimitivesNV[iid].gl_PrimitiveID = 6;
gl_MeshPrimitivesNV[iid].gl_Layer = 7;
gl_MeshPrimitivesNV[iid].gl_ViewportIndex = 8;
gl_MeshPrimitivesNV[iid].gl_ViewportMask[0] = 9;
BARRIER();
gl_MeshPrimitivesNV[iid+1].gl_PrimitiveID = gl_MeshPrimitivesNV[iid].gl_PrimitiveID;
gl_MeshPrimitivesNV[iid+1].gl_Layer = gl_MeshPrimitivesNV[iid].gl_Layer;
gl_MeshPrimitivesNV[iid+1].gl_ViewportIndex = gl_MeshPrimitivesNV[iid].gl_ViewportIndex;
gl_MeshPrimitivesNV[iid+1].gl_ViewportMask[0] = gl_MeshPrimitivesNV[iid].gl_ViewportMask[0];
BARRIER();
// check bound limits
gl_PrimitiveIndicesNV[0] = 257; // should truncate 257 -> 1
gl_PrimitiveIndicesNV[(MAX_PRIM * 3) - 1] = 2;
gl_PrimitiveIndicesNV[gid] = gl_PrimitiveIndicesNV[gid-1];
// writes 4 indices at offset gl_DrawID
writePackedPrimitiveIndices4x8NV(gl_DrawID, 0x01020304);
gl_PrimitiveCountNV = MAX_PRIM * 3;
BARRIER();
}