1#version 450 2#extension GL_EXT_mesh_shader : enable 3 4struct PositionColor { 5 vec4 position; 6 vec4 color; 7}; 8 9layout(set=0, binding=0, std430) readonly buffer PositionColorBlock { 10 PositionColor posColor[]; 11} vtxData; 12 13layout(push_constant, std430) uniform PushConstantBlock { 14 uint vertexOffset; 15} pc; 16 17layout(local_size_x=1) in; 18layout(triangles) out; 19layout(max_vertices=3, max_primitives=1) out; 20 21layout(location = 0) out vec4 outColor[]; 22 23void main() { 24 SetMeshOutputsEXT(3u, 1u); 25 const uint firstVertex = uint(gl_WorkGroupID.x) + pc.vertexOffset; 26 for (uint i = 0u; i < 3u; ++i) 27 { 28 const uint srcIdx = firstVertex + i; 29 gl_MeshVerticesEXT[i].gl_Position = vtxData.posColor[srcIdx].position; 30 outColor[i] = vtxData.posColor[srcIdx].color; 31 } 32 gl_PrimitiveTriangleIndicesEXT[0] = uvec3(0, 1, 2); 33 gl_MeshPrimitivesEXT[0].gl_ViewportIndex = int(round(vtxData.posColor[firstVertex].position.z * 3.0)); 34} 35