#version 450
#extension GL_EXT_mesh_shader : require
layout(local_size_x = 2, local_size_y = 3, local_size_z = 4) in;
layout(triangles, max_vertices = 24, max_primitives = 22) out;

out gl_MeshPerVertexEXT
{
	vec4 gl_Position;
	float gl_PointSize;
	float gl_ClipDistance[1];
	float gl_CullDistance[2];
} gl_MeshVerticesEXT[];

layout(location = 0) out vec4 vOut[];

layout(location = 2) out BlockOut
{
	vec4 a;
	vec4 b;
} outputs[];

shared float shared_float[16];

struct TaskPayload
{
	float a;
	float b;
	int c;
};

layout(constant_id = 0) const int spec_const_index = 1;

taskPayloadSharedEXT TaskPayload payload;

void main()
{
	SetMeshOutputsEXT(24, 22);

	gl_MeshVerticesEXT[gl_LocalInvocationIndex].gl_Position = vec4(gl_GlobalInvocationID, 1.0);
	gl_MeshVerticesEXT[gl_LocalInvocationIndex].gl_Position.y = float(gl_WorkGroupID);
	gl_MeshVerticesEXT[gl_LocalInvocationIndex].gl_Position.xzw = vec3(gl_GlobalInvocationID);
	gl_MeshVerticesEXT[gl_LocalInvocationIndex].gl_Position[gl_LocalInvocationIndex % 4] = float(gl_GlobalInvocationID.z);
	gl_MeshVerticesEXT[gl_LocalInvocationIndex].gl_Position[spec_const_index] = float(gl_GlobalInvocationID.z);

	gl_MeshVerticesEXT[gl_LocalInvocationIndex].gl_ClipDistance[0] = 4.0;
	gl_MeshVerticesEXT[gl_LocalInvocationIndex].gl_CullDistance[0] = 3.0;
	gl_MeshVerticesEXT[gl_LocalInvocationIndex].gl_CullDistance[1] = 5.0;

	barrier();
	if (gl_LocalInvocationIndex < 22)
	{
		gl_PrimitiveTriangleIndicesEXT[gl_LocalInvocationIndex] = uvec3(0, 1, 2) + gl_LocalInvocationIndex;
	}
}