| ### Compilation failed: |
| |
| error: 3: 'main' must return: 'vec4', 'float4', or 'half4' |
| void main() { |
| ^^^^^^^^^^^ |
| error: 4: unknown identifier 'sk_FragColor' |
| sk_FragColor.x = refract(a, b, c); |
| ^^^^^^^^^^^^ |
| error: 5: unknown identifier 'sk_FragColor' |
| sk_FragColor = refract(d, e, c); |
| ^^^^^^^^^^^^ |
| error: 7: unknown identifier 'sk_FragColor' |
| sk_FragColor.xy = refract(half2(1,0), half2(0,1), 0.5); |
| ^^^^^^^^^^^^ |
| error: 8: unknown identifier 'sk_FragColor' |
| sk_FragColor.xyz = refract(half3(1,0,0), half3(0,0,1), 0.5); |
| ^^^^^^^^^^^^ |
| error: 9: unknown identifier 'sk_FragColor' |
| sk_FragColor.xyzw = refract(half4(1,0,0,0), half4(0,0,0,1), 0.5); |
| ^^^^^^^^^^^^ |
| 6 errors |
