mirror of
https://git.code.sf.net/p/quake/quakeforge
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97 lines
2.4 KiB
C
97 lines
2.4 KiB
C
/*
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vid_common_sw.c
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Common software video driver functions
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Copyright (C) 2001 Jeff Teunissen <deek@quakeforge.net>
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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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$Id$
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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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#include <stdlib.h>
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#include <math.h>
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#include "QF/sys.h"
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#include "QF/vid.h"
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unsigned short d_8to16table[256];
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void
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VID_InitBuffers (void)
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{
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int buffersize, zbuffersize, cachesize = 1;
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// Calculate the sizes we want first
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buffersize = vid.rowbytes * vid.height;
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zbuffersize = vid.width * vid.height * sizeof (*vid.zbuffer);
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if (vid.surf_cache_size)
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cachesize = vid.surf_cache_size (vid.width, vid.height);
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// Free the old z-buffer
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if (vid.zbuffer) {
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free (vid.zbuffer);
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vid.zbuffer = NULL;
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}
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// Free the old surface cache
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if (vid.surfcache) {
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if (vid.flush_caches)
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vid.flush_caches ();
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free (vid.surfcache);
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vid.surfcache = NULL;
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}
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if (vid.do_screen_buffer) {
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vid.do_screen_buffer ();
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} else {
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// Free the old screen buffer
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if (vid.buffer) {
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free (vid.buffer);
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vid.conbuffer = vid.buffer = NULL;
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}
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// Allocate the new screen buffer
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vid.conbuffer = vid.buffer = calloc (buffersize, 1);
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if (!vid.conbuffer) {
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Sys_Error ("Not enough memory for video mode\n");
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}
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}
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// Allocate the new z-buffer
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vid.zbuffer = calloc (zbuffersize, 1);
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if (!vid.zbuffer) {
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free (vid.buffer);
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vid.conbuffer = vid.buffer = NULL;
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Sys_Error ("Not enough memory for video mode\n");
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}
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// Allocate the new surface cache; free the z-buffer if we fail
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vid.surfcache = calloc (cachesize, 1);
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if (!vid.surfcache) {
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free (vid.buffer);
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free (vid.zbuffer);
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vid.conbuffer = vid.buffer = NULL;
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vid.zbuffer = NULL;
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Sys_Error ("Not enough memory for video mode\n");
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}
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if (vid.init_caches)
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vid.init_caches (vid.surfcache, cachesize);
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}
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