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, positions, or a custom vertex attribute as input texture coords. The input coords
  19  * can have a matrix applied in the VS in both the local and position cases but not with a custom
  20  * attribute coords at this time. It will add a varying to input interpolate texture coords to the
  21  * FS.
  22  */
  23 class GrSimpleTextureEffect : public GrSingleTextureEffect {
  24 public:
  25     /* unfiltered, clamp mode */
  26     static GrFragmentProcessor* Create(GrProcessorDataManager* procDataManager,
  27                                        GrTexture* tex,
  28                                        const SkMatrix& matrix,
  29                                        GrCoordSet coordSet = kLocal_GrCoordSet) {
  30         return SkNEW_ARGS(GrSimpleTextureEffect, (procDataManager, tex, matrix,
  31                                                   GrTextureParams::kNone_FilterMode, coordSet));
  32     }
  33
  34     /* clamp mode */
  35     static GrFragmentProcessor* Create(GrProcessorDataManager* procDataManager,
  36                                        GrTexture* tex,
  37                                        const SkMatrix& matrix,
  38                                        GrTextureParams::FilterMode filterMode,
  39                                        GrCoordSet coordSet = kLocal_GrCoordSet) {
  40         return SkNEW_ARGS(GrSimpleTextureEffect, (procDataManager, tex, matrix, filterMode,
  41                                                   coordSet));
  42     }
  43
  44     static GrFragmentProcessor* Create(GrProcessorDataManager* procDataManager,
  45                                        GrTexture* tex,
  46                                        const SkMatrix& matrix,
  47                                        const GrTextureParams& p,
  48                                        GrCoordSet coordSet = kLocal_GrCoordSet) {
  49         return SkNEW_ARGS(GrSimpleTextureEffect, (procDataManager, tex, matrix, p, coordSet));
  50     }
  51
  52     virtual ~GrSimpleTextureEffect() {}
  53
  54     const char* name() const override { return "SimpleTexture"; }
  55
  56     void getGLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override;
  57
  58     GrGLFragmentProcessor* createGLInstance() const override;
  59
  60 private:
  61     GrSimpleTextureEffect(GrProcessorDataManager* procDataManager,
  62                           GrTexture* texture,
  63                           const SkMatrix& matrix,
  64                           GrTextureParams::FilterMode filterMode,
  65                           GrCoordSet coordSet)
  66         : GrSingleTextureEffect(procDataManager, texture, matrix, filterMode, coordSet) {
  67         this->initClassID<GrSimpleTextureEffect>();
  68     }
  69
  70     GrSimpleTextureEffect(GrProcessorDataManager* procDataManager,
  71                           GrTexture* texture,
  72                           const SkMatrix& matrix,
  73                           const GrTextureParams& params,
  74                           GrCoordSet coordSet)
  75         : GrSingleTextureEffect(procDataManager, texture, matrix, params, coordSet) {
  76         this->initClassID<GrSimpleTextureEffect>();
  77     }
  78
  79     bool onIsEqual(const GrFragmentProcessor& other) const override { return true; }
  80
  81     void onComputeInvariantOutput(GrInvariantOutput* inout) const override;
  82
  83     GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
  84
  85     typedef GrSingleTextureEffect INHERITED;
  86 };
  87
  88 #endif