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/*
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SDL - Simple DirectMedia Layer
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Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; if not, write to the Free
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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Sam Lantinga
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slouken@devolution.com
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*/
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#ifdef SAVE_RCSID
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static char rcsid =
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"@(#) $Id$";
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#endif
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#ifdef HAVE_OPENGL
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#include <GL/glx.h>
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#include <dlfcn.h>
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#if defined(__OpenBSD__) && !defined(__ELF__)
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#define dlsym(x,y) dlsym(x, "_" y)
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#endif
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#endif
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#include "SDL_sysvideo.h"
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struct SDL_PrivateGLData {
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int gl_active; /* to stop switching drivers while we have a valid context */
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#ifdef HAVE_OPENGL
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GLXContext glx_context; /* Current GL context */
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XVisualInfo* glx_visualinfo; /* XVisualInfo* returned by glXChooseVisual */
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void * (*glXGetProcAddress)(const GLubyte *procName);
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XVisualInfo* (*glXChooseVisual)
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( Display* dpy,
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int screen,
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int* attribList );
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GLXContext (*glXCreateContext)
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( Display* dpy,
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XVisualInfo* vis,
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GLXContext shareList,
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Bool direct );
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void (*glXDestroyContext)
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( Display* dpy,
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GLXContext ctx );
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Bool (*glXMakeCurrent)
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( Display* dpy,
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GLXDrawable drawable,
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GLXContext ctx );
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void (*glXSwapBuffers)
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( Display* dpy,
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GLXDrawable drawable );
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int (*glXGetConfig)
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( Display* dpy,
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XVisualInfo* visual_info,
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int attrib,
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int* value );
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void (*glXReleaseBuffersMESA)
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( Display* dpy,
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GLXDrawable drawable );
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#endif /* HAVE_OPENGL */
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};
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/* Old variable names */
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#define gl_active (this->gl_data->gl_active)
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#define glx_context (this->gl_data->glx_context)
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#define glx_visualinfo (this->gl_data->glx_visualinfo)
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/* OpenGL functions */
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extern XVisualInfo *X11_GL_GetVisual(_THIS);
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extern int X11_GL_CreateWindow(_THIS, int w, int h);
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extern int X11_GL_CreateContext(_THIS);
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extern void X11_GL_Shutdown(_THIS);
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#ifdef HAVE_OPENGL
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extern int X11_GL_MakeCurrent(_THIS);
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extern int X11_GL_GetAttribute(_THIS, SDL_GLattr attrib, int* value);
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extern void X11_GL_SwapBuffers(_THIS);
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extern int X11_GL_LoadLibrary(_THIS, const char* path);
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extern void *X11_GL_GetProcAddress(_THIS, const char* proc);
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#endif
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extern void X11_GL_UnloadLibrary(_THIS);
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