| ### Compilation failed: | |
| error: 1: 'main' must return: 'vec4', 'float4', or 'half4' | |
| void main() { | |
| ^^^^^^^^^^^ | |
| error: 5: discard statement is only permitted in fragment shaders | |
| default: x = 1; discard; | |
| ^^^^^^^ | |
| error: 7: unknown identifier 'sk_FragColor' | |
| sk_FragColor = half4(x); | |
| ^^^^^^^^^^^^ | |
| 3 errors |