quakeforge/libs/video/targets/vid_common_sw.c

112 lines
2.7 KiB
C
Raw Normal View History

/*
vid_common_sw.c
Common software video driver functions
Copyright (C) 2001 Jeff Teunissen <deek@quakeforge.net>
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
static __attribute__ ((used)) const char rcsid[] =
"$Id$";
#include <stdlib.h>
#include <math.h>
#include "QF/console.h"
#include "QF/mathlib.h"
#include "QF/sys.h"
#include "QF/vid.h"
unsigned short d_8to16table[256];
void
VID_InitBuffers (void)
{
int buffersize, zbuffersize, cachesize = 1;
2009-12-22 13:12:03 +00:00
// No console scaling in the sw renderer
vid.conwidth = vid.width;
vid.conheight = vid.height;
Con_CheckResize ();
2009-12-22 13:12:03 +00:00
// Calculate the sizes we want first
buffersize = vid.rowbytes * vid.height;
zbuffersize = vid.width * vid.height * sizeof (*vid.zbuffer);
if (vid.surf_cache_size)
cachesize = vid.surf_cache_size (vid.width, vid.height);
// Free the old z-buffer
if (vid.zbuffer) {
free (vid.zbuffer);
vid.zbuffer = NULL;
}
// Free the old surface cache
if (vid.surfcache) {
if (vid.flush_caches)
vid.flush_caches ();
free (vid.surfcache);
vid.surfcache = NULL;
}
2001-04-16 19:25:55 +00:00
if (vid.do_screen_buffer) {
vid.do_screen_buffer ();
} else {
// Free the old screen buffer
if (vid.buffer) {
free (vid.buffer);
vid.conbuffer = vid.buffer = NULL;
}
// Allocate the new screen buffer
vid.conbuffer = vid.buffer = calloc (buffersize, 1);
if (!vid.conbuffer) {
Sys_Error ("Not enough memory for video mode");
2001-04-16 19:25:55 +00:00
}
}
// Allocate the new z-buffer
vid.zbuffer = calloc (zbuffersize, 1);
if (!vid.zbuffer) {
free (vid.buffer);
vid.conbuffer = vid.buffer = NULL;
Sys_Error ("Not enough memory for video mode");
}
// Allocate the new surface cache; free the z-buffer if we fail
vid.surfcache = calloc (cachesize, 1);
if (!vid.surfcache) {
free (vid.buffer);
free (vid.zbuffer);
vid.conbuffer = vid.buffer = NULL;
vid.zbuffer = NULL;
Sys_Error ("Not enough memory for video mode");
}
if (vid.init_caches)
vid.init_caches (vid.surfcache, cachesize);
}
void
VID_ShiftPalette (unsigned char *p)
{
VID_SetPalette (p);
}