1*c8dee2aaSAndroid Build Coastguard Worker### Compilation failed: 2*c8dee2aaSAndroid Build Coastguard Worker 3*c8dee2aaSAndroid Build Coastguard Workererror: 1: 'main' must return: 'vec4', 'float4', or 'half4' 4*c8dee2aaSAndroid Build Coastguard Workervoid main() { 5*c8dee2aaSAndroid Build Coastguard Worker^^^^^^^^^^^ 6*c8dee2aaSAndroid Build Coastguard Workererror: 9: unknown identifier 'sk_FragColor' 7*c8dee2aaSAndroid Build Coastguard Worker sk_FragColor = half4(half(x)); 8*c8dee2aaSAndroid Build Coastguard Worker ^^^^^^^^^^^^ 9*c8dee2aaSAndroid Build Coastguard Worker2 errors 10