mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-11-11 07:42:18 +00:00
42ab0a7dbb
The software renderers force the console size to be the same as the window size (no scaling), but they weren't telling the console of the resize. oops. Fixes the crash when running the software renderers with default sizes.
273 lines
6.4 KiB
C
273 lines
6.4 KiB
C
/*
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vid_common_sw32.c
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general video driver functions
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Copyright (C) 1996-1997 Id Software, Inc.
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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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#include "QF/console.h"
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#include "QF/cvar.h"
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#include "QF/qargs.h"
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#include "QF/sys.h"
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#include "QF/va.h"
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#include "QF/vid.h"
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#include "compat.h"
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VISIBLE unsigned short d_8to16table[256];
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unsigned char d_15to8table[65536];
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/*
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lhfindcolor
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LordHavoc: finds nearest matching color in a palette
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*/
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static int
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lhfindcolor (byte *pal, int colors, int r, int g, int b)
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{
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int i, dist, best, bestdist, rd, gd, bd;
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best = 0;
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bestdist = 1000000000;
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for (i = 0;i < colors;i++)
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{
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rd = pal[i*3+0] - r;
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gd = pal[i*3+1] - g;
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bd = pal[i*3+2] - b;
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dist = rd*rd+gd*gd+bd*bd;
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if (dist < bestdist)
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{
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if (!dist) // exact match
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return i;
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best = i;
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bestdist = dist;
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}
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}
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return best;
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}
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/*
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VID_MakeColormap32
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LordHavoc: makes a 32bit color*light table, RGBA order, no endian,
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may need to be re-ordered to hardware at display time
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*/
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static void
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VID_MakeColormap32 (void *outcolormap, byte *pal)
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{
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int c, l;
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byte *out;
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out = (byte *)&d_8to24table;
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for (c = 0; c < 256; c++) {
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*out++ = pal[c*3+0];
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*out++ = pal[c*3+1];
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*out++ = pal[c*3+2];
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*out++ = 255;
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}
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d_8to24table[255] = 0; // 255 is transparent
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out = (byte *) outcolormap;
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for (l = 0;l < VID_GRADES;l++)
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{
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for (c = 0;c < vid.fullbright;c++)
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{
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out[(l*256+c)*4+0] = bound(0, (pal[c*3+0] * l) >> (VID_CBITS - 1),
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255);
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out[(l*256+c)*4+1] = bound(0, (pal[c*3+1] * l) >> (VID_CBITS - 1),
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255);
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out[(l*256+c)*4+2] = bound(0, (pal[c*3+2] * l) >> (VID_CBITS - 1),
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255);
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out[(l*256+c)*4+3] = 255;
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}
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for (;c < 255;c++)
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{
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out[(l*256+c)*4+0] = pal[c*3+0];
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out[(l*256+c)*4+1] = pal[c*3+1];
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out[(l*256+c)*4+2] = pal[c*3+2];
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out[(l*256+c)*4+3] = 255;
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}
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out[(l*256+255)*4+0] = 0;
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out[(l*256+255)*4+1] = 0;
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out[(l*256+255)*4+2] = 0;
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out[(l*256+255)*4+3] = 0;
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}
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}
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static unsigned short
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lh24to16bit (int red, int green, int blue)
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{
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red = bound(0, red, 255);
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green = bound(0, green, 255);
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blue = bound(0, blue, 255);
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red >>= 3;
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green >>= 2;
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blue >>= 3;
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red <<= 11;
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green <<= 5;
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return (unsigned short) (red | green | blue);
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}
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/*
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VID_MakeColormap16
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LordHavoc: makes a 16bit color*light table, RGB order, native endian,
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may need to be translated to hardware order at display time
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*/
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static void
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VID_MakeColormap16 (void *outcolormap, byte *pal)
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{
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int c, l;
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unsigned short *out;
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out = (unsigned short *)&d_8to16table;
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for (c = 0; c < 256; c++)
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*out++ = lh24to16bit(pal[c*3+0], pal[c*3+1], pal[c*3+2]);
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d_8to16table[255] = 0; // 255 is transparent
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out = (unsigned short *) outcolormap;
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for (l = 0;l < VID_GRADES;l++)
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{
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for (c = 0;c < vid.fullbright;c++)
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out[l*256+c] = lh24to16bit(
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(pal[c*3+0] * l) >> (VID_CBITS - 1),
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(pal[c*3+1] * l) >> (VID_CBITS - 1),
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(pal[c*3+2] * l) >> (VID_CBITS - 1));
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for (;c < 255;c++)
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out[l*256+c] = lh24to16bit(pal[c*3+0], pal[c*3+1], pal[c*3+2]);
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out[l*256+255] = 0;
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}
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}
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/*
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VID_MakeColormap8
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LordHavoc: makes a 8bit color*light table
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*/
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static void
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VID_MakeColormap8 (void *outcolormap, byte *pal)
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{
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int c, l;
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byte *out;
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out = (byte *) outcolormap;
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for (l = 0;l < VID_GRADES;l++)
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{
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for (c = 0;c < vid.fullbright;c++)
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out[l*256+c] = lhfindcolor(pal, 256,
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(pal[c*3+0] * l) >> (VID_CBITS - 1),
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(pal[c*3+1] * l) >> (VID_CBITS - 1),
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(pal[c*3+2] * l) >> (VID_CBITS - 1));
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for (;c < 256;c++)
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out[l*256+c] = c;
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}
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}
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/*
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VID_MakeColormaps
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LordHavoc: makes 8bit, 16bit, and 32bit colormaps and palettes
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*/
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void
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VID_MakeColormaps (int fullbrights, byte *pal)
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{
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vid.fullbright = fullbrights;
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vid.colormap8 = malloc (256*VID_GRADES * sizeof (byte));
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vid.colormap16 = malloc (256*VID_GRADES * sizeof (short));
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vid.colormap32 = malloc (256*VID_GRADES * sizeof (int));
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SYS_CHECKMEM (vid.colormap8 && vid.colormap16 && vid.colormap32);
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VID_MakeColormap8(vid.colormap8, pal);
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VID_MakeColormap16(vid.colormap16, pal);
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VID_MakeColormap32(vid.colormap32, pal);
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}
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VISIBLE 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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// No console scaling in the sw renderer
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vid.conwidth = vid.width;
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vid.conheight = vid.height;
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Con_CheckResize ();
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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");
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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");
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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.zbuffer = NULL;
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Sys_Error ("Not enough memory for video mode");
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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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VISIBLE void
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VID_ShiftPalette (unsigned char *p)
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{
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VID_SetPalette (p);
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}
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