1### Compilation failed: 2 3error: 1: functions 'half4 blend_src_over(half4 src, half4 dst)' and '$pure half4 blend_src_over(half4 src, half4 dst)' differ only in modifiers 4half4 blend_src_over(half4 src, half4 dst) { 5^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 6error: 2: unknown identifier 'src' 7 return src + (1 - src.a)*dst; 8 ^^^ 9error: 2: unknown identifier 'src' 10 return src + (1 - src.a)*dst; 11 ^^^ 12error: 2: unknown identifier 'dst' 13 return src + (1 - src.a)*dst; 14 ^^^ 15error: 5: shader 'main' must be main() or main(float2) 16half4 main(half4 src, half4 dst) { 17^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 18error: 6: unknown identifier 'src' 19 return blend_src_over(src, half4(1) - dst); 20 ^^^ 21error: 6: unknown identifier 'dst' 22 return blend_src_over(src, half4(1) - dst); 23 ^^^ 247 errors 25