src/gpu/effects/GrSimpleTextureEffect.h

   1 /*
   2  * Copyright 2013 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 GrSimpleTextureEffect_DEFINED
   9 #define GrSimpleTextureEffect_DEFINED
  10
  11 #include "GrSingleTextureEffect.h"
  12
  13 class GrInvariantOutput;
  14
  15 /**
  16  * The output color of this effect is a modulation of the input color and a sample from a texture.
  17  * It allows explicit specification of the filtering and wrap modes (GrTextureParams). It can use
  18  * local coords or device space coords as input texture coords. The input coords may be transformed
  19  * by a matrix.
  20  */
  21 class GrSimpleTextureEffect : public GrSingleTextureEffect {
  22 public:
  23     /* unfiltered, clamp mode */
  24     static const GrFragmentProcessor* Create(GrProcessorDataManager* procDataManager,
  25                                              GrTexture* tex,
  26                                              const SkMatrix& matrix,
  27                                              GrCoordSet coordSet = kLocal_GrCoordSet) {
  28         return new GrSimpleTextureEffect(procDataManager, tex, matrix,
  29                                          GrTextureParams::kNone_FilterMode, coordSet);
  30     }
  31
  32     /* clamp mode */
  33     static GrFragmentProcessor* Create(GrProcessorDataManager* procDataManager,
  34                                        GrTexture* tex,
  35                                        const SkMatrix& matrix,
  36                                        GrTextureParams::FilterMode filterMode,
  37                                        GrCoordSet coordSet = kLocal_GrCoordSet) {
  38         return new GrSimpleTextureEffect(procDataManager, tex, matrix, filterMode, coordSet);
  39     }
  40
  41     static GrFragmentProcessor* Create(GrProcessorDataManager* procDataManager,
  42                                        GrTexture* tex,
  43                                        const SkMatrix& matrix,
  44                                        const GrTextureParams& p,
  45                                        GrCoordSet coordSet = kLocal_GrCoordSet) {
  46         return new GrSimpleTextureEffect(procDataManager, tex, matrix, p, coordSet);
  47     }
  48
  49     virtual ~GrSimpleTextureEffect() {}
  50
  51     const char* name() const override { return "SimpleTexture"; }
  52
  53 private:
  54     GrSimpleTextureEffect(GrProcessorDataManager* procDataManager,
  55                           GrTexture* texture,
  56                           const SkMatrix& matrix,
  57                           GrTextureParams::FilterMode filterMode,
  58                           GrCoordSet coordSet)
  59         : GrSingleTextureEffect(procDataManager, texture, matrix, filterMode, coordSet) {
  60         this->initClassID<GrSimpleTextureEffect>();
  61     }
  62
  63     GrSimpleTextureEffect(GrProcessorDataManager* procDataManager,
  64                           GrTexture* texture,
  65                           const SkMatrix& matrix,
  66                           const GrTextureParams& params,
  67                           GrCoordSet coordSet)
  68         : GrSingleTextureEffect(procDataManager, texture, matrix, params, coordSet) {
  69         this->initClassID<GrSimpleTextureEffect>();
  70     }
  71
  72     GrGLFragmentProcessor* onCreateGLInstance() const override;
  73
  74     void onGetGLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override;
  75
  76     bool onIsEqual(const GrFragmentProcessor& other) const override { return true; }
  77
  78     void onComputeInvariantOutput(GrInvariantOutput* inout) const override;
  79
  80     GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
  81
  82     typedef GrSingleTextureEffect INHERITED;
  83 };
  84
  85 #endif