Sahil Parmar | 035cbbe | 2018-10-04 16:39:18 -0700 | [diff] [blame] | 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]; |
Sahil Parmar | 9466850 | 2019-02-12 12:27:21 -0800 | [diff] [blame] | 25 | } gl_MeshVerticesNV[MAX_VER]; // explicitly sized to MAX_VER |
Sahil Parmar | 035cbbe | 2018-10-04 16:39:18 -0700 | [diff] [blame] | 26 | |
| 27 | perprimitiveNV out gl_MeshPerPrimitiveNV { |
| 28 | int gl_PrimitiveID; |
| 29 | int gl_Layer; |
| 30 | int gl_ViewportIndex; |
| 31 | int gl_ViewportMask[]; |
Sahil Parmar | 9466850 | 2019-02-12 12:27:21 -0800 | [diff] [blame] | 32 | } gl_MeshPrimitivesNV[]; // implicitly sized to MAX_PRIM |
Sahil Parmar | ab027be | 2019-02-11 15:12:13 -0800 | [diff] [blame] | 33 | |
Sahil Parmar | 9466850 | 2019-02-12 12:27:21 -0800 | [diff] [blame] | 34 | out uint gl_PrimitiveIndicesNV[MAX_PRIM*3]; // explicitly sized to MAX_PRIM * 3 |
Sahil Parmar | 035cbbe | 2018-10-04 16:39:18 -0700 | [diff] [blame] | 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(); |
Sahil Parmar | ab027be | 2019-02-11 15:12:13 -0800 | [diff] [blame] | 68 | |
| 69 | // check bound limits |
| 70 | gl_PrimitiveIndicesNV[0] = 1; |
| 71 | gl_PrimitiveIndicesNV[(MAX_PRIM * 3) - 1] = 2; |
| 72 | gl_PrimitiveCountNV = MAX_PRIM * 3; |
Sahil Parmar | 035cbbe | 2018-10-04 16:39:18 -0700 | [diff] [blame] | 73 | } |