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1 /* | |
2 * Copyright 2012 Google Inc. | |
3 * | |
4 * Use of this source code is governed by a BSD-style license that can be | |
5 * found in the LICENSE file. | |
6 */ | |
7 | |
8 #ifndef GrEffectUnitTest_DEFINED | |
9 #define GrEffectUnitTest_DEFINED | |
10 | |
11 #include "SkRandom.h" | |
12 #include "SkTArray.h" | |
13 #include "SkTypes.h" | |
14 | |
15 class SkMatrix; | |
16 class GrDrawTargetCaps; | |
17 | |
18 namespace GrEffectUnitTest { | |
19 // Used to access the dummy textures in TestCreate procs. | |
20 enum { | |
21 kSkiaPMTextureIdx = 0, | |
22 kAlphaTextureIdx = 1, | |
23 }; | |
24 | |
25 /** | |
26 * A helper for use in GrEffect::TestCreate functions. | |
27 */ | |
28 const SkMatrix& TestMatrix(SkRandom*); | |
29 | |
30 } | |
31 | |
32 #if SK_ALLOW_STATIC_GLOBAL_INITIALIZERS | |
33 | |
34 class GrContext; | |
35 class GrEffect; | |
36 class GrTexture; | |
37 | |
38 class GrEffectTestFactory : SkNoncopyable { | |
39 public: | |
40 | |
41 typedef GrEffect* (*CreateProc)(SkRandom*, | |
42 GrContext*, | |
43 const GrDrawTargetCaps& caps, | |
44 GrTexture* dummyTextures[]); | |
45 | |
46 GrEffectTestFactory(CreateProc createProc) { | |
47 fCreateProc = createProc; | |
48 GetFactories()->push_back(this); | |
49 } | |
50 | |
51 static GrEffect* CreateStage(SkRandom* random, | |
52 GrContext* context, | |
53 const GrDrawTargetCaps& caps, | |
54 GrTexture* dummyTextures[]) { | |
55 uint32_t idx = random->nextRangeU(0, GetFactories()->count() - 1); | |
56 GrEffectTestFactory* factory = (*GetFactories())[idx]; | |
57 return factory->fCreateProc(random, context, caps, dummyTextures); | |
58 } | |
59 | |
60 private: | |
61 CreateProc fCreateProc; | |
62 static SkTArray<GrEffectTestFactory*, true>* GetFactories(); | |
63 }; | |
64 | |
65 /** GrEffect subclasses should insert this macro in their declaration to be incl
uded in the | |
66 * program generation unit test. | |
67 */ | |
68 #define GR_DECLARE_EFFECT_TEST
\ | |
69 static GrEffectTestFactory gTestFactory;
\ | |
70 static GrEffect* TestCreate(SkRandom*,
\ | |
71 GrContext*,
\ | |
72 const GrDrawTargetCaps&,
\ | |
73 GrTexture* dummyTextures[2]) | |
74 | |
75 /** GrEffect subclasses should insert this macro in their implementation file. T
hey must then | |
76 * also implement this static function: | |
77 * GrEffect* TestCreate(SkRandom*, | |
78 * GrContext*, | |
79 * const GrDrawTargetCaps&, | |
80 * GrTexture* dummyTextures[2]); | |
81 * dummyTextures[] are valid textures that can optionally be used to construct G
rTextureAccesses. | |
82 * The first texture has config kSkia8888_GrPixelConfig and the second has | |
83 * kAlpha_8_GrPixelConfig. TestCreate functions are also free to create addition
al textures using | |
84 * the GrContext. | |
85 */ | |
86 #define GR_DEFINE_EFFECT_TEST(Effect)
\ | |
87 GrEffectTestFactory Effect :: gTestFactory(Effect :: TestCreate) | |
88 | |
89 #else // !SK_ALLOW_STATIC_GLOBAL_INITIALIZERS | |
90 | |
91 // The unit test relies on static initializers. Just declare the TestCreate func
tion so that | |
92 // its definitions will compile. | |
93 #define GR_DECLARE_EFFECT_TEST
\ | |
94 static GrEffect* TestCreate(SkRandom*,
\ | |
95 GrContext*,
\ | |
96 const GrDrawTargetCaps&,
\ | |
97 GrTexture* dummyTextures[2]) | |
98 #define GR_DEFINE_EFFECT_TEST(X) | |
99 | |
100 #endif // !SK_ALLOW_STATIC_GLOBAL_INITIALIZERS | |
101 #endif | |
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