diff options
Diffstat (limited to 'src/gpu/effects/GrSimpleTextureEffect.h')
-rw-r--r-- | src/gpu/effects/GrSimpleTextureEffect.h | 67 |
1 files changed, 52 insertions, 15 deletions
diff --git a/src/gpu/effects/GrSimpleTextureEffect.h b/src/gpu/effects/GrSimpleTextureEffect.h index ffc05e5b52..661f40f037 100644 --- a/src/gpu/effects/GrSimpleTextureEffect.h +++ b/src/gpu/effects/GrSimpleTextureEffect.h @@ -14,25 +14,50 @@ class GrGLSimpleTextureEffect; /** * The output color of this effect is a modulation of the input color and a sample from a texture. - * The coord to sample the texture is determine by a matrix. It allows explicit specification of - * the filtering and wrap modes (GrTextureParams). + * It allows explicit specification of the filtering and wrap modes (GrTextureParams). It can use + * local coords, positions, or a custom vertex attribute as input texture coords. The input coords + * can have a matrix applied in the VS in both the local and position cases but not with a custom + * attribute coords at this time. It will add a varying to input interpolate texture coords to the + * FS. */ class GrSimpleTextureEffect : public GrSingleTextureEffect { public: /* unfiltered, clamp mode */ - static GrEffectRef* Create(GrTexture* tex, const SkMatrix& matrix) { - AutoEffectUnref effect(SkNEW_ARGS(GrSimpleTextureEffect, (tex, matrix))); + static GrEffectRef* Create(GrTexture* tex, + const SkMatrix& matrix, + CoordsType coordsType = kLocal_CoordsType) { + GrAssert(kLocal_CoordsType == coordsType || kPosition_CoordsType == coordsType); + AutoEffectUnref effect(SkNEW_ARGS(GrSimpleTextureEffect, (tex, matrix, false, coordsType))); return CreateEffectRef(effect); } /* clamp mode */ - static GrEffectRef* Create(GrTexture* tex, const SkMatrix& matrix, bool bilerp) { - AutoEffectUnref effect(SkNEW_ARGS(GrSimpleTextureEffect, (tex, matrix, bilerp))); + static GrEffectRef* Create(GrTexture* tex, + const SkMatrix& matrix, + bool bilerp, + CoordsType coordsType = kLocal_CoordsType) { + GrAssert(kLocal_CoordsType == coordsType || kPosition_CoordsType == coordsType); + AutoEffectUnref effect( + SkNEW_ARGS(GrSimpleTextureEffect, (tex, matrix, bilerp, coordsType))); return CreateEffectRef(effect); } - static GrEffectRef* Create(GrTexture* tex, const SkMatrix& matrix, const GrTextureParams& p) { - AutoEffectUnref effect(SkNEW_ARGS(GrSimpleTextureEffect, (tex, matrix, p))); + static GrEffectRef* Create(GrTexture* tex, + const SkMatrix& matrix, + const GrTextureParams& p, + CoordsType coordsType = kLocal_CoordsType) { + GrAssert(kLocal_CoordsType == coordsType || kPosition_CoordsType == coordsType); + AutoEffectUnref effect(SkNEW_ARGS(GrSimpleTextureEffect, (tex, matrix, p, coordsType))); + return CreateEffectRef(effect); + } + + /** Variant that requires the client to install a custom kVec2 vertex attribute that will be + the source of the coords. No matrix is allowed in this mode. */ + static GrEffectRef* CreateWithCustomCoords(GrTexture* tex, const GrTextureParams& p) { + AutoEffectUnref effect(SkNEW_ARGS(GrSimpleTextureEffect, (tex, + SkMatrix::I(), + p, + kCustom_CoordsType))); return CreateEffectRef(effect); } @@ -47,16 +72,28 @@ public: virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE; private: - GrSimpleTextureEffect(GrTexture* texture, const SkMatrix& matrix) - : GrSingleTextureEffect(texture, matrix) {} - GrSimpleTextureEffect(GrTexture* texture, const SkMatrix& matrix, bool bilerp) - : GrSingleTextureEffect(texture, matrix, bilerp) {} - GrSimpleTextureEffect(GrTexture* texture, const SkMatrix& matrix, const GrTextureParams& params) - : GrSingleTextureEffect(texture, matrix, params) {} + GrSimpleTextureEffect(GrTexture* texture, + const SkMatrix& matrix, + bool bilerp, + CoordsType coordsType) + : GrSingleTextureEffect(texture, matrix, bilerp, coordsType) { + GrAssert(kLocal_CoordsType == coordsType || kPosition_CoordsType == coordsType); + } + + GrSimpleTextureEffect(GrTexture* texture, + const SkMatrix& matrix, + const GrTextureParams& params, + CoordsType coordsType) + : GrSingleTextureEffect(texture, matrix, params, coordsType) { + if (kCustom_CoordsType == coordsType) { + GrAssert(matrix.isIdentity()); + this->addVertexAttrib(kVec2f_GrSLType); + } + } virtual bool onIsEqual(const GrEffect& other) const SK_OVERRIDE { const GrSimpleTextureEffect& ste = CastEffect<GrSimpleTextureEffect>(other); - return this->hasSameTextureParamsAndMatrix(ste); + return this->hasSameTextureParamsMatrixAndCoordsType(ste); } GR_DECLARE_EFFECT_TEST; |