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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 GrBackendEffectFactory_DEFINED | 8 #ifndef GrBackendEffectFactory_DEFINED |
9 #define GrBackendEffectFactory_DEFINED | 9 #define GrBackendEffectFactory_DEFINED |
10 | 10 |
11 #include "GrTypes.h" | 11 #include "GrTypes.h" |
12 #include "SkTemplates.h" | 12 #include "SkTemplates.h" |
13 #include "SkThread_platform.h" | 13 #include "SkThread.h" |
14 #include "SkTypes.h" | 14 #include "SkTypes.h" |
15 | 15 |
16 /** Given a GrEffect of a particular type, creates the corresponding graphics-ba
ckend-specific | 16 /** Given a GrEffect of a particular type, creates the corresponding graphics-ba
ckend-specific |
17 effect object. Also tracks equivalence of shaders generated via a key. Each
factory instance | 17 effect object. Also tracks equivalence of shaders generated via a key. Each
factory instance |
18 is assigned a generation ID at construction. The ID of the return of GrEffec
t::getFactory() | 18 is assigned a generation ID at construction. The ID of the return of GrEffec
t::getFactory() |
19 is used as a type identifier. Thus a GrEffect subclass must return a singlet
on from | 19 is used as a type identifier. Thus a GrEffect subclass must return a singlet
on from |
20 getFactory(). GrEffect subclasses should use the derived class GrTBackendEff
ectFactory that is | 20 getFactory(). GrEffect subclasses should use the derived class GrTBackendEff
ectFactory that is |
21 templated on the GrEffect subclass as their factory object. It requires that
the GrEffect | 21 templated on the GrEffect subclass as their factory object. It requires that
the GrEffect |
22 subclass has a nested class (or typedef) GLEffect which is its GL implementa
tion and a subclass | 22 subclass has a nested class (or typedef) GLEffect which is its GL implementa
tion and a subclass |
23 of GrGLEffect. | 23 of GrGLEffect. |
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81 return static_cast<EffectKey>(id); | 81 return static_cast<EffectKey>(id); |
82 } | 82 } |
83 | 83 |
84 EffectKey fEffectClassID; | 84 EffectKey fEffectClassID; |
85 | 85 |
86 private: | 86 private: |
87 static int32_t fCurrEffectClassID; | 87 static int32_t fCurrEffectClassID; |
88 }; | 88 }; |
89 | 89 |
90 #endif | 90 #endif |
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