@group(0) @binding(0) var output: texture_storage_2d<bgra8unorm, write>;
@group(0) @binding(1) var texa: texture_2d<f32>;


@compute @workgroup_size(1) fn main(@builtin(global_invocation_id) global_id: vec3<u32>) {
    let p = textureLoad(texa, global_id.xy, 0);
    textureStore(output, global_id.xy, p);
}