1### Compilation failed: 2 3error: 1: invalid type 4layout(binding=0) sampler2D t; 5^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 6error: 2: 'main' must return: 'vec4', 'float4', or 'half4' 7void main() 8^^^^^^^^^^^ 9error: 4: unknown identifier 'sample' 10 half4 c = sample(t, half2(0)); 11 ^^^^^^ 12error: 4: unknown identifier 't' 13 half4 c = sample(t, half2(0)); 14 ^ 15error: 5: unknown identifier 'sk_FragColor' 16 sk_FragColor = c * sample(t, half3(1)); 17 ^^^^^^^^^^^^ 18error: 5: unknown identifier 'c' 19 sk_FragColor = c * sample(t, half3(1)); 20 ^ 21error: 5: unknown identifier 'sample' 22 sk_FragColor = c * sample(t, half3(1)); 23 ^^^^^^ 24error: 5: unknown identifier 't' 25 sk_FragColor = c * sample(t, half3(1)); 26 ^ 278 errors 28