| ### Compilation failed: | |
| error: 2: 'main' must return: 'vec4', 'float4', or 'half4' | |
| void main() { n(); sk_FragColor = half4(0); } | |
| ^^^^^^^^^^^ | |
| error: 2: unknown identifier 'sk_FragColor' | |
| void main() { n(); sk_FragColor = half4(0); } | |
| ^^^^^^^^^^^^ | |
| 2 errors |