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comparison: gfx/skia/trunk/include/gpu/gl/GrGLExtensions.h
gfx/skia/trunk/include/gpu/gl/GrGLExtensions.h
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| -1:000000000000 | 0:ec875dc3f8ec |
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| 1 /* | |
| 2 * Copyright 2013 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 GrGLExtensions_DEFINED | |
| 9 #define GrGLExtensions_DEFINED | |
| 10 | |
| 11 #include "GrGLFunctions.h" | |
| 12 #include "SkString.h" | |
| 13 #include "SkTArray.h" | |
| 14 | |
| 15 struct GrGLInterface; | |
| 16 | |
| 17 /** | |
| 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 string APIs and will | |
| 20 * use the latter if it is available. | |
| 21 */ | |
| 22 class SK_API GrGLExtensions { | |
| 23 public: | |
| 24 GrGLExtensions() : fInitialized(false), fStrings(SkNEW(SkTArray<SkString>)) {} | |
| 25 | |
| 26 GrGLExtensions(const GrGLExtensions&); | |
| 27 | |
| 28 GrGLExtensions& operator=(const GrGLExtensions&); | |
| 29 | |
| 30 void swap(GrGLExtensions* that) { | |
| 31 fStrings.swap(&that->fStrings); | |
| 32 SkTSwap(fInitialized, that->fInitialized); | |
| 33 } | |
| 34 | |
| 35 /** | |
| 36 * We sometimes need to use this class without having yet created a GrGLInterface. This version | |
| 37 * of init expects that getString is always non-NULL while getIntegerv and getStringi are non- | |
| 38 * NULL if on desktop GL with version 3.0 or higher. Otherwise it will fail. | |
| 39 */ | |
| 40 bool init(GrGLStandard standard, | |
| 41 GrGLGetStringProc getString, | |
| 42 GrGLGetStringiProc getStringi, | |
| 43 GrGLGetIntegervProc getIntegerv); | |
| 44 | |
| 45 bool isInitialized() const { return fInitialized; } | |
| 46 | |
| 47 /** | |
| 48 * Queries whether an extension is present. This will fail if init() has not been called. | |
| 49 */ | |
| 50 bool has(const char[]) const; | |
| 51 | |
| 52 /** | |
| 53 * Removes an extension if present. Returns true if the extension was present before the call. | |
| 54 */ | |
| 55 bool remove(const char[]); | |
| 56 | |
| 57 /** | |
| 58 * Adds an extension to list | |
| 59 */ | |
| 60 void add(const char[]); | |
| 61 | |
| 62 void reset() { fStrings->reset(); } | |
| 63 | |
| 64 void print(const char* sep = "\n") const; | |
| 65 | |
| 66 private: | |
| 67 bool fInitialized; | |
| 68 SkAutoTDelete<SkTArray<SkString> > fStrings; | |
| 69 }; | |
| 70 | |
| 71 #endif |
