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