// Copies the transverse displacement into a plain f32 array (display / movie frame).

@group(0) @binding(0) var<uniform> P: Params;
@group(0) @binding(1) var<storage, read> pos: array<f32>;
@group(0) @binding(2) var<storage, read_write> out: array<f32>;

@compute @workgroup_size(256)
fn main(@builtin(global_invocation_id) gid: vec3u) {
  let k = gid.x;
  if (k >= P.n) { return; }
  out[k] = pos[2u * P.n + k];
}