1 // Copyright 2014 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef UI_GL_SCOPED_CGL_H_ 6 #define UI_GL_SCOPED_CGL_H_ 7 8 #include <OpenGL/OpenGL.h> 9 10 #include "base/mac/scoped_typeref.h" 11 #include "ui/gl/gl_export.h" 12 13 namespace base { 14 15 template<> 16 struct ScopedTypeRefTraits<CGLContextObj> { 17 static void Retain(CGLContextObj object) { 18 CGLRetainContext(object); 19 } 20 static void Release(CGLContextObj object) { 21 CGLReleaseContext(object); 22 } 23 }; 24 25 template<> 26 struct ScopedTypeRefTraits<CGLPixelFormatObj> { 27 static void Retain(CGLPixelFormatObj object) { 28 CGLRetainPixelFormat(object); 29 } 30 static void Release(CGLPixelFormatObj object) { 31 CGLReleasePixelFormat(object); 32 } 33 }; 34 35 } // namespace base 36 37 namespace gfx { 38 39 class GL_EXPORT ScopedCGLSetCurrentContext { 40 public: 41 explicit ScopedCGLSetCurrentContext(CGLContextObj context); 42 ~ScopedCGLSetCurrentContext(); 43 private: 44 // Note that if a context is destroyed when it is current, then the current 45 // context is changed to NULL. Take out a reference on |previous_context_| to 46 // preserve this behavior (when this falls out of scope, |previous_context_| 47 // will be made current, then released, so NULL will be current if that 48 // release destroys the context). 49 base::ScopedTypeRef<CGLContextObj> previous_context_; 50 51 DISALLOW_COPY_AND_ASSIGN(ScopedCGLSetCurrentContext); 52 }; 53 54 } // namespace gfx 55 56 #endif // UI_GL_SCOPED_CGL_H_ 57
