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/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2014 Blender Foundation.
* All rights reserved.
*/
/** \file
* \ingroup GHOST
*/
#ifndef __GHOST_CONTEXTGLX_H__
#define __GHOST_CONTEXTGLX_H__
#include "GHOST_Context.h"
#include <GL/glxew.h>
#ifndef GHOST_OPENGL_GLX_CONTEXT_FLAGS
/* leave as convenience define for the future */
# define GHOST_OPENGL_GLX_CONTEXT_FLAGS 0
#endif
#ifndef GHOST_OPENGL_GLX_RESET_NOTIFICATION_STRATEGY
# define GHOST_OPENGL_GLX_RESET_NOTIFICATION_STRATEGY 0
#endif
class GHOST_ContextGLX : public GHOST_Context {
/* XR code needs low level graphics data to send to OpenXR. */
friend class GHOST_XrGraphicsBindingOpenGL;
public:
/**
* Constructor.
*/
GHOST_ContextGLX(bool stereoVisual,
Window window,
Display *display,
GLXFBConfig fbconfig,
int contextProfileMask,
int contextMajorVersion,
int contextMinorVersion,
int contextFlags,
int contextResetNotificationStrategy);
/**
* Destructor.
*/
~GHOST_ContextGLX();
/**
* Swaps front and back buffers of a window.
* \return A boolean success indicator.
*/
GHOST_TSuccess swapBuffers();
/**
* Activates the drawing context of this window.
* \return A boolean success indicator.
*/
GHOST_TSuccess activateDrawingContext();
/**
* Release the drawing context of the calling thread.
* \return A boolean success indicator.
*/
GHOST_TSuccess releaseDrawingContext();
/**
* Call immediately after new to initialize. If this fails then immediately delete the object.
* \return Indication as to whether initialization has succeeded.
*/
GHOST_TSuccess initializeDrawingContext();
/**
* Removes references to native handles from this context and then returns
* \return GHOST_kSuccess if it is OK for the parent to release the handles and
* GHOST_kFailure if releasing the handles will interfere with sharing
*/
GHOST_TSuccess releaseNativeHandles();
/**
* Sets the swap interval for swapBuffers.
* \param interval The swap interval to use.
* \return A boolean success indicator.
*/
GHOST_TSuccess setSwapInterval(int interval);
/**
* Gets the current swap interval for swapBuffers.
* \param intervalOut Variable to store the swap interval if it can be read.
* \return Whether the swap interval can be read.
*/
GHOST_TSuccess getSwapInterval(int &intervalOut);
private:
void initContextGLXEW();
Display *m_display;
GLXFBConfig m_fbconfig;
Window m_window;
const int m_contextProfileMask;
const int m_contextMajorVersion;
const int m_contextMinorVersion;
const int m_contextFlags;
const int m_contextResetNotificationStrategy;
GLXContext m_context;
/** The first created OpenGL context (for sharing display lists) */
static GLXContext s_sharedContext;
static int s_sharedCount;
};
/* used to get GLX info */
int GHOST_X11_GL_GetAttributes(
int *attribs, int attribs_max, bool is_stereo_visual, bool need_alpha, bool for_fb_config);
#endif // __GHOST_CONTEXTGLX_H__
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