mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-11-06 05:01:26 +00:00
c38ca8e2f1
remove include of glob.h. not needed and causes win32 build to fail plugin.c: include compat.h and cast the return of GetProcAddress gl_funcs.c: fix parse error and type mismatch qfgl_ext.c: half re-write QFGL_ExtensionAddress to use QFGL_ProcAddress vid_wgl.c: fix for the new gl linking
154 lines
3.5 KiB
C
154 lines
3.5 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
|
|
|
|
$Id$
|
|
*/
|
|
|
|
#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/qtypes.h"
|
|
|
|
#include "QF/GL/extensions.h"
|
|
#include "QF/GL/funcs.h"
|
|
#include "QF/cvar.h"
|
|
#include "QF/sys.h"
|
|
|
|
#include "r_cvar.h"
|
|
|
|
/*
|
|
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.
|
|
*/
|
|
qboolean
|
|
QFGL_ParseExtensionList (const GLubyte * list, const char *name)
|
|
{
|
|
const char *start;
|
|
char *where, *terminator;
|
|
|
|
// Extension names must not have spaces.
|
|
where = (GLubyte *) strchr (name, ' ');
|
|
if (where || *name == '\0')
|
|
return 0;
|
|
|
|
start = 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)
|
|
{
|
|
void *handle;
|
|
static qboolean glProcAddress_present = true;
|
|
#if defined(HAVE_GLX)
|
|
static QF_glXGetProcAddressARB glGetProcAddress = NULL;
|
|
#else
|
|
static void * (* glGetProcAddress) (const char *) = NULL;
|
|
#endif
|
|
|
|
#if defined(HAVE_DLOPEN)
|
|
if (!(handle = dlopen (gl_libgl->string, RTLD_NOW))) {
|
|
Sys_Error ("Couldn't load OpenGL library %s: %s\n", gl_libgl->string, dlerror ());
|
|
return 0;
|
|
}
|
|
#elif defined(_WIN32)
|
|
if (!(handle = LoadLibrary (gl_libgl->string))) {
|
|
Sys_Error ("Couldn't load OpenGL library %s!\n", gl_libgl->string);
|
|
return 0;
|
|
}
|
|
#else
|
|
# error "Cannot load libraries: %s was not configured with DSO support"
|
|
#endif
|
|
|
|
if (glProcAddress_present && !glGetProcAddress) {
|
|
if (QFGL_ExtensionPresent ("GLX_ARB_get_proc_address")) {
|
|
#if defined(HAVE_GLX)
|
|
glGetProcAddress = QFGL_ProcAddress (handle, "glXGetProcAddressARB", false);
|
|
#elif defined (_WIN32)
|
|
glGetProcAddress = QFGL_ProcAddress (handle, "wglGetProcAddress", false);
|
|
#endif
|
|
if (!glGetProcAddress)
|
|
glProcAddress_present = false;
|
|
} else {
|
|
glProcAddress_present = false;
|
|
}
|
|
}
|
|
|
|
if (name && glProcAddress_present)
|
|
return glGetProcAddress (name);
|
|
return NULL;
|
|
}
|