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1 /* | 1 /* |
2 * Copyright 2013 Google Inc. | 2 * Copyright 2013 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #ifndef GrSimpleTextureEffect_DEFINED | 8 #ifndef GrSimpleTextureEffect_DEFINED |
9 #define GrSimpleTextureEffect_DEFINED | 9 #define GrSimpleTextureEffect_DEFINED |
10 | 10 |
11 #include "GrSingleTextureEffect.h" | 11 #include "GrSingleTextureEffect.h" |
12 | 12 |
13 class GrGLSimpleTextureEffect; | 13 class GrGLSimpleTextureEffect; |
14 | 14 |
15 /** | 15 /** |
16 * The output color of this effect is a modulation of the input color and a samp
le from a texture. | 16 * The output color of this effect is a modulation of the input color and a samp
le from a texture. |
17 * The coord to sample the texture is determine by a matrix. It allows explicit
specification of | 17 * It allows explicit specification of the filtering and wrap modes (GrTexturePa
rams). It can use |
18 * the filtering and wrap modes (GrTextureParams). | 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 tex
ture coords to the |
| 21 * FS. |
19 */ | 22 */ |
20 class GrSimpleTextureEffect : public GrSingleTextureEffect { | 23 class GrSimpleTextureEffect : public GrSingleTextureEffect { |
21 public: | 24 public: |
22 /* unfiltered, clamp mode */ | 25 /* unfiltered, clamp mode */ |
23 static GrEffectRef* Create(GrTexture* tex, const SkMatrix& matrix) { | 26 static GrEffectRef* Create(GrTexture* tex, |
24 AutoEffectUnref effect(SkNEW_ARGS(GrSimpleTextureEffect, (tex, matrix)))
; | 27 const SkMatrix& matrix, |
| 28 CoordsType coordsType = kLocal_CoordsType) { |
| 29 GrAssert(kLocal_CoordsType == coordsType || kPosition_CoordsType == coor
dsType); |
| 30 AutoEffectUnref effect(SkNEW_ARGS(GrSimpleTextureEffect, (tex, matrix, f
alse, coordsType))); |
25 return CreateEffectRef(effect); | 31 return CreateEffectRef(effect); |
26 } | 32 } |
27 | 33 |
28 /* clamp mode */ | 34 /* clamp mode */ |
29 static GrEffectRef* Create(GrTexture* tex, const SkMatrix& matrix, bool bile
rp) { | 35 static GrEffectRef* Create(GrTexture* tex, |
30 AutoEffectUnref effect(SkNEW_ARGS(GrSimpleTextureEffect, (tex, matrix, b
ilerp))); | 36 const SkMatrix& matrix, |
| 37 bool bilerp, |
| 38 CoordsType coordsType = kLocal_CoordsType) { |
| 39 GrAssert(kLocal_CoordsType == coordsType || kPosition_CoordsType == coor
dsType); |
| 40 AutoEffectUnref effect( |
| 41 SkNEW_ARGS(GrSimpleTextureEffect, (tex, matrix, bilerp, coordsType))
); |
31 return CreateEffectRef(effect); | 42 return CreateEffectRef(effect); |
32 } | 43 } |
33 | 44 |
34 static GrEffectRef* Create(GrTexture* tex, const SkMatrix& matrix, const GrT
extureParams& p) { | 45 static GrEffectRef* Create(GrTexture* tex, |
35 AutoEffectUnref effect(SkNEW_ARGS(GrSimpleTextureEffect, (tex, matrix, p
))); | 46 const SkMatrix& matrix, |
| 47 const GrTextureParams& p, |
| 48 CoordsType coordsType = kLocal_CoordsType) { |
| 49 GrAssert(kLocal_CoordsType == coordsType || kPosition_CoordsType == coor
dsType); |
| 50 AutoEffectUnref effect(SkNEW_ARGS(GrSimpleTextureEffect, (tex, matrix, p
, coordsType))); |
| 51 return CreateEffectRef(effect); |
| 52 } |
| 53 |
| 54 /** Variant that requires the client to install a custom kVec2 vertex attrib
ute that will be |
| 55 the source of the coords. No matrix is allowed in this mode. */ |
| 56 static GrEffectRef* CreateWithCustomCoords(GrTexture* tex, const GrTexturePa
rams& p) { |
| 57 AutoEffectUnref effect(SkNEW_ARGS(GrSimpleTextureEffect, (tex, |
| 58 SkMatrix::I(), |
| 59 p, |
| 60 kCustom_Coords
Type))); |
36 return CreateEffectRef(effect); | 61 return CreateEffectRef(effect); |
37 } | 62 } |
38 | 63 |
39 virtual ~GrSimpleTextureEffect() {} | 64 virtual ~GrSimpleTextureEffect() {} |
40 | 65 |
41 static const char* Name() { return "Texture"; } | 66 static const char* Name() { return "Texture"; } |
42 | 67 |
43 virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags
) const SK_OVERRIDE; | 68 virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags
) const SK_OVERRIDE; |
44 | 69 |
45 typedef GrGLSimpleTextureEffect GLEffect; | 70 typedef GrGLSimpleTextureEffect GLEffect; |
46 | 71 |
47 virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE; | 72 virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE; |
48 | 73 |
49 private: | 74 private: |
50 GrSimpleTextureEffect(GrTexture* texture, const SkMatrix& matrix) | 75 GrSimpleTextureEffect(GrTexture* texture, |
51 : GrSingleTextureEffect(texture, matrix) {} | 76 const SkMatrix& matrix, |
52 GrSimpleTextureEffect(GrTexture* texture, const SkMatrix& matrix, bool biler
p) | 77 bool bilerp, |
53 : GrSingleTextureEffect(texture, matrix, bilerp) {} | 78 CoordsType coordsType) |
54 GrSimpleTextureEffect(GrTexture* texture, const SkMatrix& matrix, const GrTe
xtureParams& params) | 79 : GrSingleTextureEffect(texture, matrix, bilerp, coordsType) { |
55 : GrSingleTextureEffect(texture, matrix, params) {} | 80 GrAssert(kLocal_CoordsType == coordsType || kPosition_CoordsType == coor
dsType); |
| 81 } |
| 82 |
| 83 GrSimpleTextureEffect(GrTexture* texture, |
| 84 const SkMatrix& matrix, |
| 85 const GrTextureParams& params, |
| 86 CoordsType coordsType) |
| 87 : GrSingleTextureEffect(texture, matrix, params, coordsType) { |
| 88 if (kCustom_CoordsType == coordsType) { |
| 89 GrAssert(matrix.isIdentity()); |
| 90 this->addVertexAttrib(kVec2f_GrSLType); |
| 91 } |
| 92 } |
56 | 93 |
57 virtual bool onIsEqual(const GrEffect& other) const SK_OVERRIDE { | 94 virtual bool onIsEqual(const GrEffect& other) const SK_OVERRIDE { |
58 const GrSimpleTextureEffect& ste = CastEffect<GrSimpleTextureEffect>(oth
er); | 95 const GrSimpleTextureEffect& ste = CastEffect<GrSimpleTextureEffect>(oth
er); |
59 return this->hasSameTextureParamsAndMatrix(ste); | 96 return this->hasSameTextureParamsMatrixAndCoordsType(ste); |
60 } | 97 } |
61 | 98 |
62 GR_DECLARE_EFFECT_TEST; | 99 GR_DECLARE_EFFECT_TEST; |
63 | 100 |
64 typedef GrSingleTextureEffect INHERITED; | 101 typedef GrSingleTextureEffect INHERITED; |
65 }; | 102 }; |
66 | 103 |
67 #endif | 104 #endif |
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