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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 GrTBackendEffectFactory_DEFINED | 8 #ifndef GrTBackendEffectFactory_DEFINED |
9 #define GrTBackendEffectFactory_DEFINED | 9 #define GrTBackendEffectFactory_DEFINED |
10 | 10 |
11 #include "GrBackendEffectFactory.h" | 11 #include "GrBackendEffectFactory.h" |
12 #include "GrEffectStage.h" | 12 #include "GrDrawEffect.h" |
13 | 13 |
14 /** | 14 /** |
15 * Implements GrBackendEffectFactory for a GrEffect subclass as a singleton. | 15 * Implements GrBackendEffectFactory for a GrEffect subclass as a singleton. |
16 */ | 16 */ |
17 template <typename EffectClass> | 17 template <typename EffectClass> |
18 class GrTBackendEffectFactory : public GrBackendEffectFactory { | 18 class GrTBackendEffectFactory : public GrBackendEffectFactory { |
19 | 19 |
20 public: | 20 public: |
21 typedef typename EffectClass::GLEffect GLEffect; | 21 typedef typename EffectClass::GLEffect GLEffect; |
22 | 22 |
23 /** Returns a human-readable name that is accessible via GrEffect or | 23 /** Returns a human-readable name that is accessible via GrEffect or |
24 GrGLEffect and is consistent between the two of them. | 24 GrGLEffect and is consistent between the two of them. |
25 */ | 25 */ |
26 virtual const char* name() const SK_OVERRIDE { return EffectClass::Name(); } | 26 virtual const char* name() const SK_OVERRIDE { return EffectClass::Name(); } |
27 | 27 |
28 /** Returns a value that identifies the GLSL shader code generated by | 28 /** Returns a value that identifies the GLSL shader code generated by |
29 a GrEffect. This enables caching of generated shaders. Part of the | 29 a GrEffect. This enables caching of generated shaders. Part of the |
30 id identifies the GrEffect subclass. The remainder is based | 30 id identifies the GrEffect subclass. The remainder is based |
31 on the aspects of the GrEffect object's configuration that affect | 31 on the aspects of the GrEffect object's configuration that affect |
32 GLSL code generation. */ | 32 GLSL code generation. */ |
33 virtual EffectKey glEffectKey(const GrEffectStage& stage, | 33 virtual EffectKey glEffectKey(const GrDrawEffect& drawEffect, |
34 const GrGLCaps& caps) const SK_OVERRIDE { | 34 const GrGLCaps& caps) const SK_OVERRIDE { |
35 GrAssert(kIllegalEffectClassID != fEffectClassID); | 35 GrAssert(kIllegalEffectClassID != fEffectClassID); |
36 EffectKey effectKey = GLEffect::GenKey(stage, caps); | 36 EffectKey effectKey = GLEffect::GenKey(drawEffect, caps); |
37 EffectKey textureKey = GLEffect::GenTextureKey(stage.getEffect(), caps); | 37 EffectKey textureKey = GLEffect::GenTextureKey(drawEffect, caps); |
38 EffectKey attribKey = GLEffect::GenAttribKey(stage); | 38 EffectKey attribKey = GLEffect::GenAttribKey(drawEffect); |
39 #if GR_DEBUG | 39 #if GR_DEBUG |
40 static const EffectKey kIllegalIDMask = (uint16_t) (~((1U << kEffectKeyB
its) - 1)); | 40 static const EffectKey kIllegalIDMask = (uint16_t) (~((1U << kEffectKeyB
its) - 1)); |
41 GrAssert(!(kIllegalIDMask & effectKey)); | 41 GrAssert(!(kIllegalIDMask & effectKey)); |
42 | 42 |
43 static const EffectKey kIllegalTextureKeyMask = (uint16_t) (~((1U << kTe
xtureKeyBits) - 1)); | 43 static const EffectKey kIllegalTextureKeyMask = (uint16_t) (~((1U << kTe
xtureKeyBits) - 1)); |
44 GrAssert(!(kIllegalTextureKeyMask & textureKey)); | 44 GrAssert(!(kIllegalTextureKeyMask & textureKey)); |
45 | 45 |
46 static const EffectKey kIllegalAttribKeyMask = (uint16_t) (~((1U << kAtt
ribKeyBits) - 1)); | 46 static const EffectKey kIllegalAttribKeyMask = (uint16_t) (~((1U << kAtt
ribKeyBits) - 1)); |
47 GrAssert(!(kIllegalAttribKeyMask & textureKey)); | 47 GrAssert(!(kIllegalAttribKeyMask & textureKey)); |
48 #endif | 48 #endif |
49 return fEffectClassID | (attribKey << (kEffectKeyBits+kTextureKeyBits))
| | 49 return fEffectClassID | (attribKey << (kEffectKeyBits+kTextureKeyBits))
| |
50 (textureKey << kEffectKeyBits) | effectKey; | 50 (textureKey << kEffectKeyBits) | effectKey; |
51 } | 51 } |
52 | 52 |
53 /** Returns a new instance of the appropriate *GL* implementation class | 53 /** Returns a new instance of the appropriate *GL* implementation class |
54 for the given GrEffect; caller is responsible for deleting | 54 for the given GrEffect; caller is responsible for deleting |
55 the object. */ | 55 the object. */ |
56 virtual GLEffect* createGLInstance(const GrEffectRef& effect) const SK_OVERR
IDE { | 56 virtual GLEffect* createGLInstance(const GrDrawEffect& drawEffect) const SK_
OVERRIDE { |
57 return SkNEW_ARGS(GLEffect, (*this, effect)); | 57 return SkNEW_ARGS(GLEffect, (*this, drawEffect)); |
58 } | 58 } |
59 | 59 |
60 /** This class is a singleton. This function returns the single instance. | 60 /** This class is a singleton. This function returns the single instance. |
61 */ | 61 */ |
62 static const GrBackendEffectFactory& getInstance() { | 62 static const GrBackendEffectFactory& getInstance() { |
63 static SkAlignedSTStorage<1, GrTBackendEffectFactory> gInstanceMem; | 63 static SkAlignedSTStorage<1, GrTBackendEffectFactory> gInstanceMem; |
64 static const GrTBackendEffectFactory* gInstance; | 64 static const GrTBackendEffectFactory* gInstance; |
65 if (!gInstance) { | 65 if (!gInstance) { |
66 gInstance = SkNEW_PLACEMENT(gInstanceMem.get(), | 66 gInstance = SkNEW_PLACEMENT(gInstanceMem.get(), |
67 GrTBackendEffectFactory); | 67 GrTBackendEffectFactory); |
68 } | 68 } |
69 return *gInstance; | 69 return *gInstance; |
70 } | 70 } |
71 | 71 |
72 protected: | 72 protected: |
73 GrTBackendEffectFactory() { | 73 GrTBackendEffectFactory() { |
74 fEffectClassID = GenID() << (kEffectKeyBits + kTextureKeyBits) ; | 74 fEffectClassID = GenID() << (kEffectKeyBits + kTextureKeyBits) ; |
75 } | 75 } |
76 }; | 76 }; |
77 | 77 |
78 #endif | 78 #endif |
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