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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 "GrGLFunctions.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; | 15 struct GrGLInterface; |
16 | 16 |
17 /** | 17 /** |
18 * 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 |
19 * 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 |
20 * use the latter if it is available. | 20 * use the latter if it is available. |
21 */ | 21 */ |
22 class GrGLExtensions : public SkNoncopyable { | 22 class GrGLExtensions { |
23 public: | 23 public: |
24 GrGLExtensions() : fInitialized(false), fStrings(SkNEW(SkTArray<SkString>))
{} | 24 GrGLExtensions() : fInitialized(false), fStrings(SkNEW(SkTArray<SkString>))
{} |
25 | 25 |
| 26 GrGLExtensions(const GrGLExtensions&); |
| 27 |
| 28 GrGLExtensions& operator=(const GrGLExtensions&); |
| 29 |
26 void swap(GrGLExtensions* that) { | 30 void swap(GrGLExtensions* that) { |
27 fStrings.swap(&that->fStrings); | 31 fStrings.swap(&that->fStrings); |
| 32 SkTSwap(fInitialized, that->fInitialized); |
28 } | 33 } |
29 | 34 |
30 /** | 35 /** |
31 * We sometimes need to use this class without having yet created a GrGLInte
rface. This version | 36 * We sometimes need to use this class without having yet created a GrGLInte
rface. This version |
32 * of init expects that getString is always non-NULL while getIntegerv and g
etStringi are non- | 37 * of init expects that getString is always non-NULL while getIntegerv and g
etStringi are non- |
33 * NULL if on desktop GL with version 3.0 or higher. Otherwise it will fail. | 38 * NULL if on desktop GL with version 3.0 or higher. Otherwise it will fail. |
34 */ | 39 */ |
35 bool init(GrGLStandard standard, | 40 bool init(GrGLStandard standard, |
36 GrGLGetStringProc getString, | 41 GrGLGetStringProc getString, |
37 GrGLGetStringiProc getStringi, | 42 GrGLGetStringiProc getStringi, |
38 GrGLGetIntegervProc getIntegerv); | 43 GrGLGetIntegervProc getIntegerv); |
39 | 44 |
40 bool isInitialized() const { return fInitialized; } | 45 bool isInitialized() const { return fInitialized; } |
41 | 46 |
42 /** | 47 /** |
43 * Queries whether an extension is present. This will fail if init() has not
been called. | 48 * Queries whether an extension is present. This will fail if init() has not
been called. |
44 */ | 49 */ |
45 bool has(const char*) const; | 50 bool has(const char[]) const; |
| 51 |
| 52 /** |
| 53 * Removes an extension if present. Returns true if the extension was presen
t before the call. |
| 54 */ |
| 55 bool remove(const char[]); |
46 | 56 |
47 void reset() { fStrings->reset(); } | 57 void reset() { fStrings->reset(); } |
48 | 58 |
49 void print(const char* sep = "\n") const; | 59 void print(const char* sep = "\n") const; |
50 | 60 |
51 private: | 61 private: |
52 bool fInitialized; | 62 bool fInitialized; |
53 SkAutoTDelete<SkTArray<SkString> > fStrings; | 63 SkAutoTDelete<SkTArray<SkString> > fStrings; |
54 }; | 64 }; |
55 | 65 |
56 #endif | 66 #endif |
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