@group(0) @binding(0) var<storage> in : array<u32>;
@group(0) @binding(1) var<storage, read_write> out : array<u32>;
const size = 256;
var<workgroup> b : buffer<size>;

@compute @workgroup_size(1)
fn main() {
  let view = bufferArrayView<array<u32>>(&b, 0, size);
  for (var i = 0; i < size / 4; i++) {
    view[i] = in[i];
  }
  workgroupBarrier();
  for (var i = 0; i < size / 4; i++) {
    out[i] = view[i];
  }
}