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#version 450 layout(local_size_x_id = 18, local_size_z_id = 19) in; layout(local_size_x = 32, local_size_y = 32) in; buffer bn { uint a; } bi; void foo(uvec3 wgs) { bi.a = wgs.x * gl_WorkGroupSize.y * wgs.z; } void main() { foo(gl_WorkGroupSize); }