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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_GL_SCOPED_CGL_H_
#define UI_GL_SCOPED_CGL_H_
#include <OpenGL/OpenGL.h>
#include "base/mac/scoped_typeref.h"
#include "ui/gl/gl_export.h"
namespace base {
template<>
struct ScopedTypeRefTraits<CGLContextObj> {
static void Retain(CGLContextObj object) {
CGLRetainContext(object);
}
static void Release(CGLContextObj object) {
CGLReleaseContext(object);
}
};
template<>
struct ScopedTypeRefTraits<CGLPixelFormatObj> {
static void Retain(CGLPixelFormatObj object) {
CGLRetainPixelFormat(object);
}
static void Release(CGLPixelFormatObj object) {
CGLReleasePixelFormat(object);
}
};
} // namespace base
namespace gfx {
class GL_EXPORT ScopedCGLSetCurrentContext {
public:
explicit ScopedCGLSetCurrentContext(CGLContextObj context);
~ScopedCGLSetCurrentContext();
private:
// Note that if a context is destroyed when it is current, then the current
// context is changed to NULL. Take out a reference on |previous_context_| to
// preserve this behavior (when this falls out of scope, |previous_context_|
// will be made current, then released, so NULL will be current if that
// release destroys the context).
base::ScopedTypeRef<CGLContextObj> previous_context_;
DISALLOW_COPY_AND_ASSIGN(ScopedCGLSetCurrentContext);
};
} // namespace gfx
#endif // UI_GL_SCOPED_CGL_H_
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