1*c8dee2aaSAndroid Build Coastguard Worker### Compilation failed: 2*c8dee2aaSAndroid Build Coastguard Worker 3*c8dee2aaSAndroid Build Coastguard Workererror: 7: 'main' must return: 'vec4', 'float4', or 'half4' 4*c8dee2aaSAndroid Build Coastguard Workervoid main() { 5*c8dee2aaSAndroid Build Coastguard Worker^^^^^^^^^^^ 6*c8dee2aaSAndroid Build Coastguard Workererror: 10: unknown identifier 'sk_FragColor' 7*c8dee2aaSAndroid Build Coastguard Worker sk_FragColor.r = half(t.x); 8*c8dee2aaSAndroid Build Coastguard Worker ^^^^^^^^^^^^ 9*c8dee2aaSAndroid Build Coastguard Worker2 errors 10