michael@0: /*
michael@0:  * Copyright 2013 Google Inc.
michael@0:  *
michael@0:  * Use of this source code is governed by a BSD-style license that can be
michael@0:  * found in the LICENSE file.
michael@0:  */
michael@0: 
michael@0: #ifndef GrSimpleTextureEffect_DEFINED
michael@0: #define GrSimpleTextureEffect_DEFINED
michael@0: 
michael@0: #include "GrSingleTextureEffect.h"
michael@0: 
michael@0: class GrGLSimpleTextureEffect;
michael@0: 
michael@0: /**
michael@0:  * The output color of this effect is a modulation of the input color and a sample from a texture.
michael@0:  * It allows explicit specification of the filtering and wrap modes (GrTextureParams). It can use
michael@0:  * local coords, positions, or a custom vertex attribute as input texture coords. The input coords
michael@0:  * can have a matrix applied in the VS in both the local and position cases but not with a custom
michael@0:  * attribute coords at this time. It will add a varying to input interpolate texture coords to the
michael@0:  * FS.
michael@0:  */
michael@0: class GrSimpleTextureEffect : public GrSingleTextureEffect {
michael@0: public:
michael@0:     /* unfiltered, clamp mode */
michael@0:     static GrEffectRef* Create(GrTexture* tex,
michael@0:                                const SkMatrix& matrix,
michael@0:                                GrCoordSet coordSet = kLocal_GrCoordSet) {
michael@0:         AutoEffectUnref effect(SkNEW_ARGS(GrSimpleTextureEffect, (tex, matrix, GrTextureParams::kNone_FilterMode, coordSet)));
michael@0:         return CreateEffectRef(effect);
michael@0:     }
michael@0: 
michael@0:     /* clamp mode */
michael@0:     static GrEffectRef* Create(GrTexture* tex,
michael@0:                                const SkMatrix& matrix,
michael@0:                                GrTextureParams::FilterMode filterMode,
michael@0:                                GrCoordSet coordSet = kLocal_GrCoordSet) {
michael@0:         AutoEffectUnref effect(
michael@0:             SkNEW_ARGS(GrSimpleTextureEffect, (tex, matrix, filterMode, coordSet)));
michael@0:         return CreateEffectRef(effect);
michael@0:     }
michael@0: 
michael@0:     static GrEffectRef* Create(GrTexture* tex,
michael@0:                                const SkMatrix& matrix,
michael@0:                                const GrTextureParams& p,
michael@0:                                GrCoordSet coordSet = kLocal_GrCoordSet) {
michael@0:         AutoEffectUnref effect(SkNEW_ARGS(GrSimpleTextureEffect, (tex, matrix, p, coordSet)));
michael@0:         return CreateEffectRef(effect);
michael@0:     }
michael@0: 
michael@0:     virtual ~GrSimpleTextureEffect() {}
michael@0: 
michael@0:     static const char* Name() { return "Texture"; }
michael@0: 
michael@0:     virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE;
michael@0: 
michael@0:     typedef GrGLSimpleTextureEffect GLEffect;
michael@0: 
michael@0:     virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE;
michael@0: 
michael@0: private:
michael@0:     GrSimpleTextureEffect(GrTexture* texture,
michael@0:                           const SkMatrix& matrix,
michael@0:                           GrTextureParams::FilterMode filterMode,
michael@0:                           GrCoordSet coordSet)
michael@0:         : GrSingleTextureEffect(texture, matrix, filterMode, coordSet) {
michael@0:     }
michael@0: 
michael@0:     GrSimpleTextureEffect(GrTexture* texture,
michael@0:                           const SkMatrix& matrix,
michael@0:                           const GrTextureParams& params,
michael@0:                           GrCoordSet coordSet)
michael@0:         : GrSingleTextureEffect(texture, matrix, params, coordSet) {
michael@0:     }
michael@0: 
michael@0:     virtual bool onIsEqual(const GrEffect& other) const SK_OVERRIDE {
michael@0:         const GrSimpleTextureEffect& ste = CastEffect<GrSimpleTextureEffect>(other);
michael@0:         return this->hasSameTextureParamsMatrixAndSourceCoords(ste);
michael@0:     }
michael@0: 
michael@0:     GR_DECLARE_EFFECT_TEST;
michael@0: 
michael@0:     typedef GrSingleTextureEffect INHERITED;
michael@0: };
michael@0: 
michael@0: #endif