mirror of
https://git.code.sf.net/p/quake/quakeforge-old
synced 2024-12-11 04:40:54 +00:00
103 lines
2.2 KiB
C
103 lines
2.2 KiB
C
/*
|
|
dga_check.c
|
|
|
|
Routines to check for XFree86 DGA and VidMode extensions
|
|
|
|
Copyright (C) 2000 Contributors of the QuakeForge Project
|
|
Copyright (C) 2000 Marcus Sundberg [mackan@stacken.kth.se]
|
|
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.
|
|
*/
|
|
|
|
#include <quakedef.h>
|
|
|
|
#include <stdlib.h>
|
|
#include <X11/Xlib.h>
|
|
|
|
#if defined(HAS_DGA)
|
|
#include <X11/extensions/xf86dga.h>
|
|
#include <X11/extensions/xf86vmode.h>
|
|
#endif
|
|
|
|
#include "dga_check.h"
|
|
|
|
|
|
/*
|
|
VID_CheckDGA
|
|
|
|
Check for the presence of the XFree86-DGA X server extension
|
|
*/
|
|
int
|
|
VID_CheckDGA(Display *dpy, int *maj_ver, int *min_ver, int *hasvideo)
|
|
{
|
|
#if defined(HAS_DGA)
|
|
int event_base, error_base, dgafeat, dummy;
|
|
|
|
if (! XF86DGAQueryExtension(dpy, &event_base, &error_base)) {
|
|
return 0;
|
|
}
|
|
|
|
if (maj_ver == NULL) maj_ver = &dummy;
|
|
if (min_ver == NULL) min_ver = &dummy;
|
|
|
|
if (! XF86DGAQueryVersion(dpy, maj_ver, min_ver)) {
|
|
return 0;
|
|
}
|
|
if (! XF86DGAQueryDirectVideo(dpy, DefaultScreen(dpy), &dgafeat)) {
|
|
*hasvideo = 0;
|
|
} else {
|
|
*hasvideo = (dgafeat & XF86DGADirectPresent);
|
|
}
|
|
|
|
return 1;
|
|
#else
|
|
return 0;
|
|
#endif // HAS_DGA
|
|
}
|
|
|
|
|
|
/*
|
|
VID_CheckVMode
|
|
|
|
Check for the presence of the XFree86-VidMode X server extension
|
|
*/
|
|
int
|
|
VID_CheckVMode(Display *dpy, int *maj_ver, int *min_ver)
|
|
{
|
|
#if defined(HAS_DGA)
|
|
int event_base, error_base;
|
|
int dummy;
|
|
|
|
if (! XF86VidModeQueryExtension(dpy, &event_base, &error_base)) {
|
|
return 0;
|
|
}
|
|
|
|
if (maj_ver == NULL) maj_ver = &dummy;
|
|
if (min_ver == NULL) min_ver = &dummy;
|
|
|
|
if (! XF86VidModeQueryVersion(dpy, maj_ver, min_ver)) {
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
#else
|
|
return 0;
|
|
#endif // HAS_DGA
|
|
}
|