First Commit

externals/glslang/Test/spv.ext.meshShaderRedeclBuiltins.mesh

@@ -0,0 +1,75 @@
+#version 460
+
+#define MAX_VER  81
+#define MAX_PRIM 32
+
+#define BARRIER() \
+    memoryBarrierShared(); \
+    barrier();
+
+#extension GL_EXT_mesh_shader : enable
+
+layout(local_size_x = 32, local_size_y = 1, local_size_z = 1) in;
+
+layout(max_vertices=MAX_VER) out;
+layout(max_primitives=MAX_PRIM) out;
+layout(points) out;
+
+// test use of redeclared single-view builtins in mesh shaders:
+
+out gl_MeshPerVertexEXT {
+    vec4 gl_Position;
+    float gl_PointSize;
+    float gl_ClipDistance[4];
+    float gl_CullDistance[4];
+} gl_MeshVerticesEXT[MAX_VER];                   // explicitly sized to MAX_VER
+
+perprimitiveEXT out gl_MeshPerPrimitiveEXT {
+    int gl_PrimitiveID;
+    int gl_Layer;
+    int gl_ViewportIndex;
+    bool gl_CullPrimitiveEXT;
+    int  gl_PrimitiveShadingRateEXT;
+} gl_MeshPrimitivesEXT[];                        // implicitly sized to MAX_PRIM
+
+out uint gl_PrimitivePointIndicesEXT[MAX_PRIM];     // explicitly sized to MAX_PRIM
+
+void main()
+{
+    uint iid = gl_LocalInvocationID.x;
+    uint gid = gl_WorkGroupID.x;
+
+    SetMeshOutputsEXT(MAX_VER, MAX_PRIM);
+
+    gl_MeshVerticesEXT[iid].gl_Position = vec4(1.0);
+    gl_MeshVerticesEXT[iid].gl_PointSize = 2.0;
+    gl_MeshVerticesEXT[iid].gl_ClipDistance[3] = 3.0;
+    gl_MeshVerticesEXT[iid].gl_CullDistance[2] = 4.0;
+
+    BARRIER();
+
+    gl_MeshVerticesEXT[iid+1].gl_Position = gl_MeshVerticesEXT[iid].gl_Position;
+    gl_MeshVerticesEXT[iid+1].gl_PointSize = gl_MeshVerticesEXT[iid].gl_PointSize;
+    gl_MeshVerticesEXT[iid+1].gl_ClipDistance[3] = gl_MeshVerticesEXT[iid].gl_ClipDistance[3];
+    gl_MeshVerticesEXT[iid+1].gl_CullDistance[2] = gl_MeshVerticesEXT[iid].gl_CullDistance[2];
+
+    BARRIER();
+
+    gl_MeshPrimitivesEXT[iid].gl_PrimitiveID = 6;
+    gl_MeshPrimitivesEXT[iid].gl_Layer = 7;
+    gl_MeshPrimitivesEXT[iid].gl_ViewportIndex = 8;
+    gl_MeshPrimitivesEXT[iid].gl_CullPrimitiveEXT = false;
+
+    BARRIER();
+
+    gl_MeshPrimitivesEXT[iid+1].gl_PrimitiveID = gl_MeshPrimitivesEXT[iid].gl_PrimitiveID;
+    gl_MeshPrimitivesEXT[iid+1].gl_Layer = gl_MeshPrimitivesEXT[iid].gl_Layer;
+    gl_MeshPrimitivesEXT[iid+1].gl_ViewportIndex = gl_MeshPrimitivesEXT[iid].gl_ViewportIndex;
+    gl_MeshPrimitivesEXT[iid+1].gl_CullPrimitiveEXT = gl_MeshPrimitivesEXT[iid].gl_CullPrimitiveEXT;
+
+    BARRIER();
+
+    // check bound limits
+    gl_PrimitivePointIndicesEXT[0] = 1;
+    gl_PrimitivePointIndicesEXT[MAX_PRIM - 1] = 2;
+}