#version 450

/* built in:
in uvec3 gl_NumWorkGroups;
in uvec3 gl_WorkGroupID;
in uvec3 gl_LocalInvocationID;
in uvec3 gl_GlobalInvocationID;
in uint  gl_LocalInvocationIndex;
*/

layout(local_size_x_id = 0, local_size_y = 1, local_size_z = 1) in;

layout(push_constant) uniform PushStruct {
    uint size;
    uint offset;
} p;

layout(binding = 0) buffer inBuffer { uint v[]; };
layout(binding = 1) buffer outBufer { uint g_v[]; };

void main() {
    uint gid = gl_GlobalInvocationID.x;
    
    if (gid >= p.size) {
        return;
    }
    
    if (gid < p.offset)
        g_v[gid] = v[gid];
    else
        g_v[gid] = v[gid - p.offset] + v[gid];
}