| uniform half4 testInputs; // equals (-1.25, 0, 0.75, 2.25) |
| uniform half4 colorGreen, colorRed; |
| |
| half4 main(float2 coords) { |
| // NOTE: the ES3 spec does not mandate NaN support. This test may not succeed on some GPUs. |
| |
| half4 valueIsNaN = 0 / testInputs.yyyy; |
| half4 valueIsNumber = 1 / testInputs; |
| |
| return ( (isnan(valueIsNaN.x)) && |
| all(isnan(valueIsNaN.xy)) && |
| all(isnan(valueIsNaN.xyz)) && |
| all(isnan(valueIsNaN.xyzw)) && |
| ! (isnan(valueIsNumber.x)) && |
| !any(isnan(valueIsNumber.xy)) && |
| !any(isnan(valueIsNumber.xyz)) && |
| !any(isnan(valueIsNumber.xyzw))) ? colorGreen : colorRed; |
| } |