| /* |
| * Copyright 2018 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| @optimizationFlags { |
| kPreservesOpaqueInput_OptimizationFlag | kConstantOutputForConstantInput_OptimizationFlag |
| } |
| |
| void main() { |
| sk_OutColor = sk_InColor; |
| half invAlpha = sk_InColor.a <= 0 ? 0 : 1 / sk_InColor.a; |
| sk_OutColor.rgb *= invAlpha; |
| } |
| |
| @class { |
| SkPMColor4f constantOutputForConstantInput(const SkPMColor4f& input) const override { |
| SkColor4f upm = input.unpremul(); |
| return { upm.fR, upm.fG, upm.fB, upm.fA }; |
| } |
| } |
