mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-12-22 02:20:46 +00:00
140 lines
3 KiB
C
140 lines
3 KiB
C
/*
|
|
qfgl_ext.c
|
|
|
|
QuakeForge OpenGL extension interface definitions
|
|
|
|
Copyright (C) 2000 Jeff Teunissen <deek@dusknet.dhs.org>
|
|
|
|
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
|
|
|
|
*/
|
|
#ifdef HAVE_CONFIG_H
|
|
# include "config.h"
|
|
#endif
|
|
|
|
#ifdef HAVE_DLFCN_H
|
|
# include <dlfcn.h>
|
|
#endif
|
|
#ifndef RTLD_LAZY
|
|
# ifdef DL_LAZY
|
|
# define RTLD_LAZY DL_LAZY
|
|
# else
|
|
# define RTLD_LAZY 0
|
|
# endif
|
|
#endif
|
|
|
|
#ifdef _WIN32
|
|
// must be BEFORE include gl/gl.h
|
|
# include "winquake.h"
|
|
#endif
|
|
#ifdef HAVE_WINDOWS_H
|
|
# include <windows.h>
|
|
#endif
|
|
|
|
#ifdef HAVE_STRING_H
|
|
# include <string.h>
|
|
#endif
|
|
#ifdef HAVE_STRINGS_H
|
|
# include <strings.h>
|
|
#endif
|
|
|
|
#include "QF/cvar.h"
|
|
#include "QF/qtypes.h"
|
|
#include "QF/sys.h"
|
|
#include "QF/GL/extensions.h"
|
|
#include "QF/GL/funcs.h"
|
|
|
|
#include "r_internal.h"
|
|
|
|
// First we need to get all the function pointers declared.
|
|
#define QFGL_WANT(ret, name, args) \
|
|
ret (GLAPIENTRY * qf##name) args;
|
|
#define QFGL_NEED(ret, name, args) \
|
|
ret (GLAPIENTRY * qf##name) args;
|
|
#include "QF/GL/qf_funcs_list.h"
|
|
#undef QFGL_NEED
|
|
#undef QFGL_WANT
|
|
|
|
qboolean
|
|
GLF_FindFunctions (void)
|
|
{
|
|
#define QFGL_WANT(ret, name, args) \
|
|
qf##name = vid.get_proc_address (#name, false);
|
|
#define QFGL_NEED(ret, name, args) \
|
|
qf##name = vid.get_proc_address (#name, true);
|
|
#include "QF/GL/qf_funcs_list.h"
|
|
#undef QFGL_NEED
|
|
#undef QFGL_WANT
|
|
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
ParseExtensionList
|
|
|
|
It takes a bit of care to be fool-proof about parsing an OpenGL extensions
|
|
string. Don't be fooled by sub-strings, etc.
|
|
*/
|
|
static qboolean
|
|
QFGL_ParseExtensionList (const GLubyte *list, const char *name)
|
|
{
|
|
const char *start;
|
|
char *where, *terminator;
|
|
|
|
if (!list)
|
|
return 0;
|
|
|
|
// Extension names must not have spaces.
|
|
where = strchr (name, ' ');
|
|
if (where || *name == '\0')
|
|
return 0;
|
|
|
|
start = (const char *) list;
|
|
for (;;) {
|
|
where = strstr (start, name);
|
|
if (!where)
|
|
break;
|
|
terminator = where + strlen (name);
|
|
if (where == start || *(where - 1) == ' ')
|
|
if (*terminator == ' ' || *terminator == '\0')
|
|
return 1;
|
|
start = terminator;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
qboolean
|
|
QFGL_ExtensionPresent (const char *name)
|
|
{
|
|
static const GLubyte *gl_extensions = NULL;
|
|
|
|
if (!gl_extensions) { // get and save GL extension list
|
|
gl_extensions = qfglGetString (GL_EXTENSIONS);
|
|
}
|
|
|
|
return QFGL_ParseExtensionList (gl_extensions, name);
|
|
}
|
|
|
|
void *
|
|
QFGL_ExtensionAddress (const char *name)
|
|
{
|
|
if (name)
|
|
return vid.get_proc_address (name, false);
|
|
return NULL;
|
|
}
|