1*c8dee2aaSAndroid Build Coastguard Worker### Compilation failed: 2*c8dee2aaSAndroid Build Coastguard Worker 3*c8dee2aaSAndroid Build Coastguard Workererror: 5: 'main' must return: 'vec4', 'float4', or 'half4' 4*c8dee2aaSAndroid Build Coastguard Workervoid main() { 5*c8dee2aaSAndroid Build Coastguard Worker^^^^^^^^^^^ 6*c8dee2aaSAndroid Build Coastguard Workererror: 6: unknown identifier 'sk_FragColor' 7*c8dee2aaSAndroid Build Coastguard Worker sk_FragColor.x = cross_length_2d(ah, bh); 8*c8dee2aaSAndroid Build Coastguard Worker ^^^^^^^^^^^^ 9*c8dee2aaSAndroid Build Coastguard Workererror: 6: unknown identifier 'cross_length_2d' 10*c8dee2aaSAndroid Build Coastguard Worker sk_FragColor.x = cross_length_2d(ah, bh); 11*c8dee2aaSAndroid Build Coastguard Worker ^^^^^^^^^^^^^^^ 12*c8dee2aaSAndroid Build Coastguard Workererror: 7: unknown identifier 'sk_FragColor' 13*c8dee2aaSAndroid Build Coastguard Worker sk_FragColor.y = half(cross_length_2d(af, bf)); 14*c8dee2aaSAndroid Build Coastguard Worker ^^^^^^^^^^^^ 15*c8dee2aaSAndroid Build Coastguard Workererror: 7: unknown identifier 'cross_length_2d' 16*c8dee2aaSAndroid Build Coastguard Worker sk_FragColor.y = half(cross_length_2d(af, bf)); 17*c8dee2aaSAndroid Build Coastguard Worker ^^^^^^^^^^^^^^^ 18*c8dee2aaSAndroid Build Coastguard Worker5 errors 19