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1 /* | 1 /* |
2 * Copyright 2012 Google Inc. | 2 * Copyright 2012 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 GrSingleTextureEffect_DEFINED | 8 #ifndef GrSingleTextureEffect_DEFINED |
9 #define GrSingleTextureEffect_DEFINED | 9 #define GrSingleTextureEffect_DEFINED |
10 | 10 |
11 #include "GrFragmentProcessor.h" | 11 #include "GrFragmentProcessor.h" |
12 #include "GrCoordTransform.h" | 12 #include "GrCoordTransform.h" |
13 #include "GrInvariantOutput.h" | 13 #include "GrInvariantOutput.h" |
14 #include "SkMatrix.h" | 14 #include "SkMatrix.h" |
15 | 15 |
16 class GrTexture; | 16 class GrTexture; |
17 | 17 |
18 /** | 18 /** |
19 * A base class for effects that draw a single texture with a texture matrix. Th
is effect has no | 19 * A base class for effects that draw a single texture with a texture matrix. Th
is effect has no |
20 * backend implementations. One must be provided by the subclass. | 20 * backend implementations. One must be provided by the subclass. |
21 */ | 21 */ |
22 class GrSingleTextureEffect : public GrFragmentProcessor { | 22 class GrSingleTextureEffect : public GrFragmentProcessor { |
23 public: | 23 public: |
24 virtual ~GrSingleTextureEffect(); | 24 virtual ~GrSingleTextureEffect(); |
25 | 25 |
26 protected: | 26 protected: |
27 /** unfiltered, clamp mode */ | 27 /** unfiltered, clamp mode */ |
28 GrSingleTextureEffect(GrTexture*, const SkMatrix&, GrCoordSet = kLocal_GrCoo
rdSet); | 28 GrSingleTextureEffect(GrProcessorDataManager*, GrTexture*, const SkMatrix&, |
| 29 GrCoordSet = kLocal_GrCoordSet); |
29 /** clamp mode */ | 30 /** clamp mode */ |
30 GrSingleTextureEffect(GrTexture*, const SkMatrix&, GrTextureParams::FilterMo
de filterMode, | 31 GrSingleTextureEffect(GrProcessorDataManager*, GrTexture*, const SkMatrix&, |
| 32 GrTextureParams::FilterMode filterMode, |
31 GrCoordSet = kLocal_GrCoordSet); | 33 GrCoordSet = kLocal_GrCoordSet); |
32 GrSingleTextureEffect(GrTexture*, | 34 GrSingleTextureEffect(GrProcessorDataManager*, |
| 35 GrTexture*, |
33 const SkMatrix&, | 36 const SkMatrix&, |
34 const GrTextureParams&, | 37 const GrTextureParams&, |
35 GrCoordSet = kLocal_GrCoordSet); | 38 GrCoordSet = kLocal_GrCoordSet); |
36 | 39 |
37 /** | 40 /** |
38 * Can be used as a helper to implement subclass onComputeInvariantOutput().
It assumes that | 41 * Can be used as a helper to implement subclass onComputeInvariantOutput().
It assumes that |
39 * the subclass output color will be a modulation of the input color with a
value read from the | 42 * the subclass output color will be a modulation of the input color with a
value read from the |
40 * texture. | 43 * texture. |
41 */ | 44 */ |
42 void updateInvariantOutputForModulation(GrInvariantOutput* inout) const { | 45 void updateInvariantOutputForModulation(GrInvariantOutput* inout) const { |
43 if (GrPixelConfigIsAlphaOnly(this->texture(0)->config())) { | 46 if (GrPixelConfigIsAlphaOnly(this->texture(0)->config())) { |
44 inout->mulByUnknownSingleComponent(); | 47 inout->mulByUnknownSingleComponent(); |
45 } else if (GrPixelConfigIsOpaque(this->texture(0)->config())) { | 48 } else if (GrPixelConfigIsOpaque(this->texture(0)->config())) { |
46 inout->mulByUnknownOpaqueFourComponents(); | 49 inout->mulByUnknownOpaqueFourComponents(); |
47 } else { | 50 } else { |
48 inout->mulByUnknownFourComponents(); | 51 inout->mulByUnknownFourComponents(); |
49 } | 52 } |
50 } | 53 } |
51 | 54 |
52 private: | 55 private: |
53 GrCoordTransform fCoordTransform; | 56 GrCoordTransform fCoordTransform; |
54 GrTextureAccess fTextureAccess; | 57 GrTextureAccess fTextureAccess; |
55 | 58 |
56 typedef GrFragmentProcessor INHERITED; | 59 typedef GrFragmentProcessor INHERITED; |
57 }; | 60 }; |
58 | 61 |
59 #endif | 62 #endif |
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