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      1 /*
      2  * Copyright 2018 Google Inc.
      3  *
      4  * Use of this source code is governed by a BSD-style license that can be
      5  * found in the LICENSE file.
      6  */
      7 
      8 in float k1;
      9 in float k2;
     10 in float k3;
     11 in float k4;
     12 layout(key) in bool enforcePMColor;
     13 in fragmentProcessor child;
     14 
     15 uniform float4 k;
     16 
     17 void main() {
     18     half4 dst = process(child);
     19     sk_OutColor = clamp(k.x * sk_InColor * dst + k.y * sk_InColor + k.z * dst + k.w, 0, 1);
     20     if (enforcePMColor) {
     21         sk_OutColor.rgb = min(sk_OutColor.rgb, sk_OutColor.a);
     22     }
     23 }
     24 
     25 @setData(pdman) {
     26     pdman.set4f(k, k1, k2, k3, k4);
     27 }
     28