mirror of
https://git.code.sf.net/p/quake/quakeforge
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d743c6c55f
Add GLSL directory to QF and use it for all gsls based code (instead of GL). defines.h, types.h and funcs.h are derived from gl2.h from khronos. Text drawing now uses triangles instead of quads.
124 lines
2.8 KiB
C
124 lines
2.8 KiB
C
/*
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qfglsl.c
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QuakeForge OpenGL extension interface definitions
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Copyright (C) 2000 Jeff Teunissen <deek@dusknet.dhs.org>
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program 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.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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static __attribute__ ((used)) const char rcsid[] =
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"$Id$";
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#ifdef HAVE_DLFCN_H
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# include <dlfcn.h>
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#endif
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#ifndef RTLD_LAZY
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# ifdef DL_LAZY
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# define RTLD_LAZY DL_LAZY
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# else
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# define RTLD_LAZY 0
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# endif
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#endif
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#ifdef _WIN32
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// must be BEFORE include gl/gl.h
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# include "winquake.h"
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#endif
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#ifdef HAVE_WINDOWS_H
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# include <windows.h>
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#endif
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#ifdef HAVE_STRING_H
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# include <string.h>
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#endif
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#ifdef HAVE_STRINGS_H
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# include <strings.h>
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#endif
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#include "QF/cvar.h"
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#include "QF/qtypes.h"
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#include "QF/sys.h"
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#include "QF/GLSL/funcs.h"
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#include "r_cvar.h"
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void *
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QFGL_ProcAddress (void *handle, const char *name, qboolean crit)
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{
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void *glfunc = NULL;
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Sys_MaskPrintf (SYS_VID, "DEBUG: Finding symbol %s ... ", name);
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glfunc = QFGL_GetProcAddress (handle, name);
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if (glfunc) {
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Sys_MaskPrintf (SYS_VID, "found [%p]\n", glfunc);
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return glfunc;
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}
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Sys_MaskPrintf (SYS_VID, "not found\n");
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if (crit) {
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if (strncmp ("fxMesa", name, 6) == 0) {
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Sys_Printf ("This target requires a special version of Mesa with "
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"support for Glide and SVGAlib.\n");
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Sys_Printf ("If you are in X, try using a GLX or SGL target.\n");
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}
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Sys_Error ("Couldn't load critical OpenGL function %s, exiting...",
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name);
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}
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return NULL;
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}
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// First we need to get all the function pointers declared.
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#define QFGL_WANT(ret, name, args) \
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VISIBLE ret (GLAPIENTRY * qf##name) args;
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#define QFGL_NEED(ret, name, args) \
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VISIBLE ret (GLAPIENTRY * qf##name) args;
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#include "QF/GLSL/qf_funcs_list.h"
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#undef QFGL_NEED
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#undef QFGL_WANT
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void *libgl_handle;
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// Then we need to open the libGL and set all the symbols.
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qboolean
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GLF_Init (void)
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{
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libgl_handle = QFGL_LoadLibrary ();
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return true;
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}
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qboolean
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GLF_FindFunctions (void)
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{
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#define QFGL_WANT(ret, name, args) \
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qf##name = QFGL_ProcAddress (libgl_handle, #name, false);
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#define QFGL_NEED(ret, name, args) \
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qf##name = QFGL_ProcAddress (libgl_handle, #name, true);
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#include "QF/GLSL/qf_funcs_list.h"
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#undef QFGL_NEED
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#undef QFGL_WANT
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return true;
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}
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