GlContext.hpp

//
// SFML - Simple and Fast Multimedia Library
// Copyright (C) 2007-2015 Laurent Gomila (laurent@sfml-dev.org)
//
// This software is provided 'as-is', without any express or implied warranty.
// In no event will the authors be held liable for any damages arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it freely,
// subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented;
//    you must not claim that you wrote the original software.
//    If you use this software in a product, an acknowledgment
//    in the product documentation would be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such,
//    and must not be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source distribution.
//

#ifndef CPP3DS_GLCONTEXT_HPP
#define CPP3DS_GLCONTEXT_HPP

// Headers
#include <cpp3ds/Config.hpp>
#include <cpp3ds/OpenGL.hpp>
#include <cpp3ds/Window/Context.hpp>
#include <cpp3ds/Window/ContextSettings.hpp>
#include <cpp3ds/System/NonCopyable.hpp>


namespace cpp3ds
{
namespace priv
{

class GlContext : NonCopyable
{
public:
    GlContext(GlContext* shared);

    GlContext(GlContext* shared, const ContextSettings& settings, unsigned int width, unsigned int height);


    static void globalInit();

    static void globalCleanup();

    static void ensureContext();

    static GlContext* create();

    static GlContext* create(const ContextSettings& settings, unsigned int width, unsigned int height);

public:
    virtual ~GlContext();

    const ContextSettings& getSettings() const;

    GLuint getHandle() const;

    bool setActive(bool active);

    void display();

    void setVerticalSyncEnabled(bool enabled);

protected:
    bool makeCurrent();

    static int evaluateFormat(unsigned int bitsPerPixel, const ContextSettings& settings, int colorBits, int depthBits, int stencilBits, int antialiasing, bool accelerated);

    // Member data
    ContextSettings m_settings; 

private:

    void initialize();

    void checkSettings(const ContextSettings& requestedSettings);

    // Member data
    GLuint m_context; 
};

} // namespace priv

} // namespace cpp3ds


#endif // CPP3DS_GLCONTEXT_HPP