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1 /* | 1 /* |
2 * Copyright 2013 Google Inc. | 2 * Copyright 2013 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 GrGLExtensions_DEFINED | 8 #ifndef GrGLExtensions_DEFINED |
9 #define GrGLExtensions_DEFINED | 9 #define GrGLExtensions_DEFINED |
10 | 10 |
11 #include "GrGLInterface.h" | 11 #include "GrGLFunctions.h" |
12 #include "SkString.h" | 12 #include "SkString.h" |
13 #include "SkTArray.h" | 13 #include "SkTArray.h" |
14 | 14 |
| 15 struct GrGLInterface; |
| 16 |
15 /** | 17 /** |
16 * This helper queries the current GL context for its extensions, remembers them
, and can be | 18 * This helper queries the current GL context for its extensions, remembers them
, and can be |
17 * queried. It supports both glGetString- and glGetStringi-style extension strin
g APIs and will | 19 * queried. It supports both glGetString- and glGetStringi-style extension strin
g APIs and will |
18 * use the latter if it is available. | 20 * use the latter if it is available. |
19 */ | 21 */ |
20 class GrGLExtensions { | 22 class GrGLExtensions : public SkNoncopyable { |
21 public: | 23 public: |
22 bool init(const GrGLInterface* iface) { | 24 |
23 return this->init(iface->fStandard, | 25 GrGLExtensions() : fInitialized(false), fStrings(SkNEW(SkTArray<SkString>))
{} |
24 iface->fGetString, | 26 |
25 iface->fGetStringi, | 27 void swap(GrGLExtensions* that) { |
26 iface->fGetIntegerv); | 28 fStrings.swap(&that->fStrings); |
27 } | 29 } |
| 30 |
28 /** | 31 /** |
29 * We sometimes need to use this class without having yet created a GrGLInte
rface. This version | 32 * We sometimes need to use this class without having yet created a GrGLInte
rface. This version |
30 * of init expects that getString is always non-NULL while getIntegerv and g
etStringi are non- | 33 * of init expects that getString is always non-NULL while getIntegerv and g
etStringi are non- |
31 * NULL if on desktop GL with version 3.0 or higher. Otherwise it will fail. | 34 * NULL if on desktop GL with version 3.0 or higher. Otherwise it will fail. |
32 */ | 35 */ |
33 bool init(GrGLStandard standard, | 36 bool init(GrGLStandard standard, |
34 GrGLGetStringProc getString, | 37 GrGLGetStringProc getString, |
35 GrGLGetStringiProc getStringi, | 38 GrGLGetStringiProc getStringi, |
36 GrGLGetIntegervProc getIntegerv); | 39 GrGLGetIntegervProc getIntegerv); |
37 | 40 |
| 41 bool isInitialized() const { return fInitialized; } |
| 42 |
38 /** | 43 /** |
39 * Queries whether an extension is present. This will fail if init() has not
been called. | 44 * Queries whether an extension is present. This will fail if init() has not
been called. |
40 */ | 45 */ |
41 bool has(const char*) const; | 46 bool has(const char*) const; |
42 | 47 |
43 void reset() { fStrings.reset(); } | 48 void reset() { fStrings->reset(); } |
44 | 49 |
45 void print(const char* sep = "\n") const; | 50 void print(const char* sep = "\n") const; |
46 | 51 |
47 private: | 52 private: |
48 SkTArray<SkString> fStrings; | 53 bool fInitialized; |
| 54 SkAutoTDelete<SkTArray<SkString> > fStrings; |
49 }; | 55 }; |
50 | 56 |
51 #endif | 57 #endif |
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