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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 |
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| 60 enum { | 60 enum { |
| 61 kIllegalEffectClassID = 0, | 61 kIllegalEffectClassID = 0, |
| 62 }; | 62 }; |
| 63 | 63 |
| 64 GrBackendEffectFactory() { | 64 GrBackendEffectFactory() { |
| 65 fEffectClassID = kIllegalEffectClassID; | 65 fEffectClassID = kIllegalEffectClassID; |
| 66 } | 66 } |
| 67 virtual ~GrBackendEffectFactory() {} | 67 virtual ~GrBackendEffectFactory() {} |
| 68 | 68 |
| 69 static EffectKey GenID() { | 69 static EffectKey GenID() { |
| 70 GR_DEBUGCODE(static const int32_t kClassIDBits = 8 * sizeof(EffectKey) - | 70 SkDEBUGCODE(static const int32_t kClassIDBits = 8 * sizeof(EffectKey) - |
| 71 kTextureKeyBits - kEffectKeyBits - kAttribKeyBits); | 71 kTextureKeyBits - kEffectKeyBits - kAttribKeyBits); |
| 72 // fCurrEffectClassID has been initialized to kIllegalEffectClassID. The | 72 // fCurrEffectClassID has been initialized to kIllegalEffectClassID. The |
| 73 // atomic inc returns the old value not the incremented value. So we add | 73 // atomic inc returns the old value not the incremented value. So we add |
| 74 // 1 to the returned value. | 74 // 1 to the returned value. |
| 75 int32_t id = sk_atomic_inc(&fCurrEffectClassID) + 1; | 75 int32_t id = sk_atomic_inc(&fCurrEffectClassID) + 1; |
| 76 SkASSERT(id < (1 << kClassIDBits)); | 76 SkASSERT(id < (1 << kClassIDBits)); |
| 77 return static_cast<EffectKey>(id); | 77 return static_cast<EffectKey>(id); |
| 78 } | 78 } |
| 79 | 79 |
| 80 EffectKey fEffectClassID; | 80 EffectKey fEffectClassID; |
| 81 | 81 |
| 82 private: | 82 private: |
| 83 static int32_t fCurrEffectClassID; | 83 static int32_t fCurrEffectClassID; |
| 84 }; | 84 }; |
| 85 | 85 |
| 86 #endif | 86 #endif |
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