### Compilation failed:

error: 2: invalid type
layout(binding=0) sampler2D s;
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: 4: 'main' must return: 'vec4', 'float4', or 'half4'
void main() {
^^^^^^^^^^^
error: 6: unknown identifier 'sk_FragColor'
    sk_FragColor =
    ^^^^^^^^^^^^
error: 8: unknown identifier 'sample'
            (tmpColor = sample(s, float2(1)),
                        ^^^^^^
error: 8: unknown identifier 's'
            (tmpColor = sample(s, float2(1)),
                               ^
5 errors