| uniform half4 colorGreen, colorRed; |
| |
| half4 main(float2 c) { |
| bool ok = true; |
| |
| // prefix '!' |
| ok = ok && !(colorGreen.r == 1.0); |
| |
| uint val = uint(colorGreen.r); // 0 |
| // Unary bitwise negation '~' (scalar): |
| uint2 mask = uint2(val, ~val); |
| // Unary bitwise negation '~' (vector, uint): |
| int2 imask = int2(~mask); |
| // Unary bitwise negation '~' (vector, int): |
| mask = ~mask & uint2(~imask); |
| ok = ok && (mask == uint2(0)); |
| |
| half one = half(colorGreen.r); |
| half4x4 m = half4x4(one); // identity |
| // prefix '-' |
| return ok ? -m * -colorGreen : colorRed; |
| } |
