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////////////////////////////////////////////////////////////
//
// SFML - Simple and Fast Multimedia Library
// Copyright (C) 2013 Jonathan De Wachter (dewachter.jonathan@gmail.com)
//
// 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 SFML_EGLCONTEXT_HPP
#define SFML_EGLCONTEXT_HPP
////////////////////////////////////////////////////////////
// Headers
////////////////////////////////////////////////////////////
#include <SFML/Window/VideoMode.hpp>
#include <SFML/Window/ContextSettings.hpp>
#include <SFML/Window/EGLCheck.hpp>
#include <SFML/Window/GlContext.hpp>
#include <SFML/OpenGL.hpp>
namespace sf
{
namespace priv
{
class EglContext : public GlContext
{
public:
////////////////////////////////////////////////////////////
/// \brief Create a new context, not associated to a window
///
/// \param shared Context to share the new one with (can be NULL)
///
////////////////////////////////////////////////////////////
EglContext(EglContext* shared);
////////////////////////////////////////////////////////////
/// \brief Create a new context attached to a window
///
/// \param shared Context to share the new one with
/// \param settings Creation parameters
/// \param owner Pointer to the owner window
/// \param bitsPerPixel Pixel depth, in bits per pixel
///
////////////////////////////////////////////////////////////
EglContext(EglContext* shared, const ContextSettings& settings, const WindowImpl* owner, unsigned int bitsPerPixel);
////////////////////////////////////////////////////////////
/// \brief Create a new context that embeds its own rendering target
///
/// \param shared Context to share the new one with
/// \param settings Creation parameters
/// \param width Back buffer width, in pixels
/// \param height Back buffer height, in pixels
///
////////////////////////////////////////////////////////////
EglContext(EglContext* shared, const ContextSettings& settings, unsigned int width, unsigned int height);
////////////////////////////////////////////////////////////
/// \brief Destructor
///
////////////////////////////////////////////////////////////
~EglContext();
////////////////////////////////////////////////////////////
/// \brief Activate the context as the current target
/// for rendering
///
/// \return True on success, false if any error happened
///
////////////////////////////////////////////////////////////
virtual bool makeCurrent();
////////////////////////////////////////////////////////////
/// \brief Display what has been rendered to the context so far
///
////////////////////////////////////////////////////////////
virtual void display();
////////////////////////////////////////////////////////////
/// \brief Enable or disable vertical synchronization
///
/// Activating vertical synchronization will limit the number
/// of frames displayed to the refresh rate of the monitor.
/// This can avoid some visual artifacts, and limit the framerate
/// to a good value (but not constant across different computers).
///
/// \param enabled: True to enable v-sync, false to deactivate
///
////////////////////////////////////////////////////////////
virtual void setVerticalSyncEnabled(bool enabled);
////////////////////////////////////////////////////////////
/// \brief Create the context
///
/// \param shared Context to share the new one with (can be NULL)
/// \param bitsPerPixel Pixel depth, in bits per pixel
/// \param settings Creation parameters
///
////////////////////////////////////////////////////////////
void createContext(EglContext* shared);
////////////////////////////////////////////////////////////
/// \brief Create the EGL surface
///
/// This function must be called when the activity (re)start, or
/// when the orientation change.
///
/// \param window: The native window type
///
////////////////////////////////////////////////////////////
void createSurface(EGLNativeWindowType window);
////////////////////////////////////////////////////////////
/// \brief Destroy the EGL surface
///
/// This function must be called when the activity is stopped, or
/// when the orientation change.
///
////////////////////////////////////////////////////////////
void destroySurface();
////////////////////////////////////////////////////////////
/// \brief Get the best EGL visual for a given set of video settings
///
/// \param display EGL display
/// \param bitsPerPixel Pixel depth, in bits per pixel
/// \param settings Requested context settings
///
/// \return The best EGL config
///
////////////////////////////////////////////////////////////
static EGLConfig getBestConfig(EGLDisplay display, unsigned int bitsPerPixel, const ContextSettings& settings);
#ifdef SFML_SYSTEM_LINUX
////////////////////////////////////////////////////////////
/// \brief Select the best EGL visual for a given set of settings
///
/// \param display X display
/// \param bitsPerPixel Pixel depth, in bits per pixel
/// \param settings Requested context settings
///
/// \return The best visual
///
////////////////////////////////////////////////////////////
static XVisualInfo selectBestVisual(::Display* display, unsigned int bitsPerPixel, const ContextSettings& settings);
#endif
private:
////////////////////////////////////////////////////////////
// Member data
////////////////////////////////////////////////////////////
EGLDisplay m_display; ///< The internal EGL display
EGLContext m_context; ///< The internal EGL context
EGLSurface m_surface; ///< The internal EGL surface
EGLConfig m_config; ///< The internal EGL config
};
} // namespace priv
} // namespace sf
#endif // SFML_EGLCONTEXT_HPP
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