#version 450

#define MAX_VER  81
#define MAX_PRIM 32
#define MAX_VIEWS gl_MaxMeshViewCountNV

#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 user-defined per-view attributes

// mix of single-view and per-view attributes
layout(location=0) out block {
    perprimitiveNV perviewNV vec4 color1[][3];  // Implicitly sized
    perprimitiveNV vec4 color2[3];
    perviewNV vec4 color3[MAX_VIEWS][3];          // Explicitly sized
    vec4 color4;
} b[];

// per-view block
perviewNV layout(location=10) out perviewBlock {
    perprimitiveNV vec4 color5[];              // Implicitly sized
    perprimitiveNV vec4 color6[MAX_VIEWS][3];  // Explicitly sized
    vec4 color7[][3];                            // Implicitly sized
    vec4 color8[MAX_VIEWS];                      // Explicitly sized
} b2[];

void main()
{
    uint iid = gl_LocalInvocationID.x;
    uint viewID = gl_MeshViewIndicesNV[gl_MeshViewCountNV%MAX_VIEWS];

    b[iid].color1[viewID][2] = vec4(1.0);
    b[iid].color2[1]         = vec4(2.0);
    b[iid].color3[viewID][2] = vec4(3.0);
    b[iid].color4            = vec4(4.0);

    BARRIER();

    b2[iid].color5[viewID]    = vec4(5.0);
    b2[iid].color6[viewID][1] = vec4(6.0);
    b2[iid].color7[viewID][2] = vec4(7.0);
    b2[iid].color8[viewID]    = vec4(8.0);

    BARRIER();
}