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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 |
(...skipping 15 matching lines...) Expand all Loading... |
26 class GrEffectRef; | 26 class GrEffectRef; |
27 class GrGLEffect; | 27 class GrGLEffect; |
28 class GrGLCaps; | 28 class GrGLCaps; |
29 class GrDrawEffect; | 29 class GrDrawEffect; |
30 | 30 |
31 class GrBackendEffectFactory : public SkNoncopyable { | 31 class GrBackendEffectFactory : public SkNoncopyable { |
32 public: | 32 public: |
33 typedef uint32_t EffectKey; | 33 typedef uint32_t EffectKey; |
34 enum { | 34 enum { |
35 kNoEffectKey = 0, | 35 kNoEffectKey = 0, |
36 kEffectKeyBits = 15, | 36 kEffectKeyBits = 10, |
37 /** | 37 /** |
38 * Some aspects of the generated code may be determined by the particula
r textures that are | 38 * The framework automatically includes coord transforms and texture acc
esses in their |
39 * associated with the effect. These manipulations are performed by GrGL
ShaderBuilder beyond | 39 * effect's EffectKey, so effects don't need to account for them in GenK
ey(). |
40 * GrGLEffects' control. So there is a dedicated part of the key which i
s combined | |
41 * automatically with the bits produced by GrGLEffect::GenKey(). | |
42 */ | 40 */ |
43 kTextureKeyBits = 4, | 41 kTextureKeyBits = 4, |
44 kAttribKeyBits = 6 | 42 kTransformKeyBits = 6, |
| 43 kAttribKeyBits = 6, |
| 44 kClassIDBits = 6 |
45 }; | 45 }; |
46 | 46 |
47 virtual EffectKey glEffectKey(const GrDrawEffect&, const GrGLCaps&) const =
0; | 47 virtual EffectKey glEffectKey(const GrDrawEffect&, const GrGLCaps&) const =
0; |
48 virtual GrGLEffect* createGLInstance(const GrDrawEffect&) const = 0; | 48 virtual GrGLEffect* createGLInstance(const GrDrawEffect&) const = 0; |
49 | 49 |
50 bool operator ==(const GrBackendEffectFactory& b) const { | 50 bool operator ==(const GrBackendEffectFactory& b) const { |
51 return fEffectClassID == b.fEffectClassID; | 51 return fEffectClassID == b.fEffectClassID; |
52 } | 52 } |
53 bool operator !=(const GrBackendEffectFactory& b) const { | 53 bool operator !=(const GrBackendEffectFactory& b) const { |
54 return !(*this == b); | 54 return !(*this == b); |
55 } | 55 } |
56 | 56 |
57 virtual const char* name() const = 0; | 57 virtual const char* name() const = 0; |
58 | 58 |
| 59 static EffectKey GetTransformKey(EffectKey key) { |
| 60 return key >> (kEffectKeyBits + kTextureKeyBits) & ((1U << kTransformKey
Bits) - 1); |
| 61 } |
| 62 |
59 protected: | 63 protected: |
60 enum { | 64 enum { |
61 kIllegalEffectClassID = 0, | 65 kIllegalEffectClassID = 0, |
62 }; | 66 }; |
63 | 67 |
64 GrBackendEffectFactory() { | 68 GrBackendEffectFactory() { |
65 fEffectClassID = kIllegalEffectClassID; | 69 fEffectClassID = kIllegalEffectClassID; |
66 } | 70 } |
67 virtual ~GrBackendEffectFactory() {} | 71 virtual ~GrBackendEffectFactory() {} |
68 | 72 |
69 static EffectKey GenID() { | 73 static EffectKey GenID() { |
70 SkDEBUGCODE(static const int32_t kClassIDBits = 8 * sizeof(EffectKey) - | 74 SkDEBUGCODE(static const int32_t kClassIDBits = 8 * sizeof(EffectKey) - |
71 kTextureKeyBits - kEffectKeyBits - kAttribKeyBits); | 75 kTextureKeyBits - kEffectKeyBits - kAttribKeyBits); |
72 // fCurrEffectClassID has been initialized to kIllegalEffectClassID. The | 76 // fCurrEffectClassID has been initialized to kIllegalEffectClassID. The |
73 // atomic inc returns the old value not the incremented value. So we add | 77 // atomic inc returns the old value not the incremented value. So we add |
74 // 1 to the returned value. | 78 // 1 to the returned value. |
75 int32_t id = sk_atomic_inc(&fCurrEffectClassID) + 1; | 79 int32_t id = sk_atomic_inc(&fCurrEffectClassID) + 1; |
76 SkASSERT(id < (1 << kClassIDBits)); | 80 SkASSERT(id < (1 << kClassIDBits)); |
77 return static_cast<EffectKey>(id); | 81 return static_cast<EffectKey>(id); |
78 } | 82 } |
79 | 83 |
80 EffectKey fEffectClassID; | 84 EffectKey fEffectClassID; |
81 | 85 |
82 private: | 86 private: |
83 static int32_t fCurrEffectClassID; | 87 static int32_t fCurrEffectClassID; |
84 }; | 88 }; |
85 | 89 |
86 #endif | 90 #endif |
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