Line data    Source code

       1             : /*
       2             :  * Copyright 2016 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             : #ifndef GrSRGBEffect_DEFINED
       9             : #define GrSRGBEffect_DEFINED
      10             : 
      11             : #include "GrFragmentProcessor.h"
      12             : 
      13           0 : class GrSRGBEffect : public GrFragmentProcessor {
      14             : public:
      15             :     enum class Mode {
      16             :         kLinearToSRGB,
      17             :         kSRGBToLinear,
      18             :     };
      19             : 
      20             :     /**
      21             :      * Creates an effect that applies the sRGB transfer function (or its inverse)
      22             :      */
      23             :     static sk_sp<GrFragmentProcessor> Make(Mode mode);
      24             : 
      25           0 :     const char* name() const override { return "sRGB"; }
      26             : 
      27           0 :     Mode mode() const { return fMode; }
      28             : 
      29             : private:
      30             :     GrSRGBEffect(Mode mode);
      31             : 
      32             :     GrGLSLFragmentProcessor* onCreateGLSLInstance() const override;
      33             :     void onGetGLSLProcessorKey(const GrShaderCaps&, GrProcessorKeyBuilder*) const override;
      34             :     bool onIsEqual(const GrFragmentProcessor&) const override;
      35             : 
      36             :     GrColor4f constantOutputForConstantInput(GrColor4f input) const override;
      37             : 
      38             :     Mode fMode;
      39             : 
      40             :     GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
      41             : 
      42             :     typedef GrFragmentProcessor INHERITED;
      43             : };
      44             : 
      45             : #endif