#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 inoutBufer { uint v[]; };

void main() {    
    uint gIDx = gl_GlobalInvocationID.x;
    if (gIDx >= p.size) {
        return;
    }

    v[gIDx] = v[gIDx] + v[gIDx + p.offset];
}