1### Compilation failed: 2 3error: 3: 'main' must return: 'vec4', 'float4', or 'half4' 4void main() { 5^^^^^^^^^^^ 6error: 47: unknown identifier 'sk_FragColor' 7 sk_FragColor.r = half(s) + half(i) + half(us) + half(ui) + half(h) + half(f) + half(s2s) + 8 ^^^^^^^^^^^^ 9error: 51: unknown identifier 'sk_FragColor' 10 sk_FragColor.r += half(ui2us) + half(h2us) + half(f2us) + half(b2us) + half(s2ui) + half(i2ui) + 11 ^^^^^^^^^^^^ 123 errors 13