1### Compilation failed: 2 3error: 1: invalid type 4layout(binding=0) sampler2D t; 5^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 6error: 4: unknown identifier 'sampleGrad' 7 return sampleGrad(t, coords, dFdx(coords), dFdy(coords)); 8 ^^^^^^^^^^ 9error: 4: unknown identifier 't' 10 return sampleGrad(t, coords, dFdx(coords), dFdy(coords)); 11 ^ 123 errors 13