/*
dga_check.c
Routines to check for XFree86 DGA and VidMode extensions
Copyright (C) 2000 Marcus Sundberg [mackan@stacken.kth.se]
Copyright (C) 2000 contributors of the QuakeForge project
Please see the file "AUTHORS" for a list of contributors
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:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
$Id: dga_check.c,v 1.1.1.1 2001/03/06 09:33:17 lordhavoc Exp $
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdlib.h>
#include <X11/Xlib.h>
#include <X11/Xproto.h>
#ifdef HAVE_DGA
# include <X11/extensions/xf86dga.h>
# include <X11/extensions/xf86dgastr.h>
#endif
#ifdef HAVE_VIDMODE
# include <X11/extensions/xf86vmode.h>
# include <X11/extensions/xf86vmstr.h>
# ifndef XDGA_MAJOR_VERSION
# ifdef XF86DGA_MAJOR_VERSION
# define XDGA_MAJOR_VERSION XF86DGA_MAJOR_VERSION
# else
# error "Neither XDGA_MAJOR_VERSION nor XF86DGA_MAJOR_VERSION found."
# endif
# endif
#endif
#include "console.h"
#include "dga_check.h"
/*
VID_CheckDGA
Check for the presence of the XFree86-DGA X server extension
*/
qboolean
VID_CheckDGA (Display * dpy, int *maj_ver, int *min_ver, int *hasvideo)
{
#ifdef HAVE_DGA
int event_base, error_base, dgafeat;
int dummy, dummy_major, dummy_minor, dummy_video;
if (!XQueryExtension (dpy, XF86DGANAME, &dummy, &dummy, &dummy)) {
return false;
}
if (!XF86DGAQueryExtension (dpy, &event_base, &error_base)) {
return false;
}
if (!maj_ver)
maj_ver = &dummy_major;
if (!min_ver)
min_ver = &dummy_minor;
if (!XF86DGAQueryVersion (dpy, maj_ver, min_ver)) {
return false;
}
if ((!maj_ver) || (*maj_ver != XDGA_MAJOR_VERSION)) {
Con_Printf ("VID: Incorrect DGA version: %d.%d, \n", *maj_ver, *min_ver);
return false;
}
Con_Printf ("VID: DGA version: %d.%d\n", *maj_ver, *min_ver);
if (!hasvideo)
hasvideo = &dummy_video;
if (!XF86DGAQueryDirectVideo (dpy, DefaultScreen (dpy), &dgafeat)) {
*hasvideo = 0;
} else {
*hasvideo = (dgafeat & XF86DGADirectGraphics);
}
if (!(dgafeat & (XF86DGADirectPresent | XF86DGADirectMouse))) {
return false;
}
return true;
#else
return false;
#endif // HAVE_DGA
}
/*
VID_CheckVMode
Check for the presence of the XFree86-VidMode X server extension
*/
qboolean
VID_CheckVMode (Display * dpy, int *maj_ver, int *min_ver)
{
#ifdef HAVE_VIDMODE
int event_base, error_base;
int dummy, dummy_major, dummy_minor;
if (!XQueryExtension (dpy, XF86VIDMODENAME, &dummy, &dummy, &dummy)) {
return false;
}
if (!XF86VidModeQueryExtension (dpy, &event_base, &error_base)) {
return false;
}
if (!maj_ver)
maj_ver = &dummy_major;
if (!min_ver)
min_ver = &dummy_minor;
if (!XF86VidModeQueryVersion (dpy, maj_ver, min_ver))
return false;
if ((!maj_ver) || (*maj_ver != XF86VIDMODE_MAJOR_VERSION)) {
Con_Printf ("VID: Incorrect VidMode version: %d.%d\n", *maj_ver, *min_ver);
return false;
}
Con_Printf ("VID: VidMode version: %d.%d\n", *maj_ver, *min_ver);
return true;
#else
return false;
#endif // HAVE_VIDMODE
}
