/* | |
* Copyright 2017 Google Inc. | |
* | |
* Use of this source code is governed by a BSD-style license that can be | |
* found in the LICENSE file. | |
*/ | |
in fragmentProcessor inputFP; | |
half4 main() { | |
half inputAlpha = sample(inputFP).a; | |
half factor = 1.0 - inputAlpha; | |
factor = half(exp(-factor * factor * 4.0) - 0.018); | |
return half4(factor); | |
} |