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// Copyright (c) 2009 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 CHROME_BROWSER_RENDERER_HOST_BACKING_STORE_MANAGER_GLX_H_
#define CHROME_BROWSER_RENDERER_HOST_BACKING_STORE_MANAGER_GLX_H_
#include <GL/glx.h>
#include <X11/Xlib.h>
#include "base/basictypes.h"
class BackingStoreManagerGlx {
public:
BackingStoreManagerGlx();
~BackingStoreManagerGlx();
Display* display() const { return display_; }
// Returns the context, creating it if necessary, and binding it to the given
// display and window identified by the XID. This will avoid duplicate calls
// to MakeCurrent if the display/XID hasn't changed from the last call.
// Returns NULL on failure.
GLXContext BindContext(XID window_id);
private:
Display* display_;
// Set to true when we've tried to create the context. This prevents us from
// trying to initialize the OpenGL context over and over in the failure case.
bool tried_to_init_;
// The OpenGL context. Non-NULL when initialized.
GLXContext context_;
// The last window we've bound our context to. This allows us to avoid
// duplicate "MakeCurrent" calls which are expensive.
XID previous_window_id_;
DISALLOW_COPY_AND_ASSIGN(BackingStoreManagerGlx);
};
#endif // CHROME_BROWSER_RENDERER_HOST_BACKING_STORE_MANAGER_GLX_H_
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