mirror of
https://git.code.sf.net/p/quake/quakeforge-old
synced 2024-11-22 11:51:17 +00:00
540 lines
11 KiB
C
540 lines
11 KiB
C
/*
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Copyright (C) 1996-1997 Id Software, Inc.
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Copyright (C) 1999-2000 contributors of the QuakeForge project
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Copyright (C) 1999-2000 Nelson Rush.
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Please see the file "AUTHORS" for a list of contributors
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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 the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include <quakedef.h>
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#include <d_local.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <aalib.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#if defined(HAVE_SYS_IO_H)
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# include <sys/io.h>
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#elif defined(HAVE_ASM_IO_H)
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# include <asm/io.h>
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#endif
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static byte *vid_surfcache;
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static int VID_highhunkmark;
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static int num_modes, current_mode;
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static vga_modeinfo *modes;
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static byte vid_current_palette[768];
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static int UseDisplay = 1;
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static cvar_t *vid_mode;
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static cvar_t *vid_redrawfull;
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static cvar_t *vid_waitforrefresh;
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static char *framebuffer_ptr;
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static byte backingbuf[48*24];
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int VID_options_items = 0;
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aa_context *context = NULL;
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unsigned char *buffer;
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aa_palette palette;
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aa_renderparams *params;
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int aaversion=0;
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void
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aa_setpage()
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{
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int x,y;
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unsigned char *img = aa_image(context);
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switch(aaversion) {
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case 11:
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for (y = 0; y < 200; y++)
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memcpy(img+y*aa_imgwidth(context),buffer+y*320,320);
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break;
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case 12:
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for (y=0;y<100;y++)
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memcpy(img+y*aa_imgwidth(context),buffer+y*320*2,320);
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break;
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case 13:
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for (y=0;y<66;y++)
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memcpy(img+y*aa_imgwidth(context),buffer+y*320*3,320);
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break;
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case 14:
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for (y=0;y<50;y++)
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memcpy(img+y*aa_imgwidth(context),buffer+y*320*4,320);
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break;
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case 21:
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for (y = 0; y < 200; y++)
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for (x=0;x<160;x++)
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img[y*aa_imgwidth(context)+x]=buffer[y*320+x*2];
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break;
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case 22:
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for (y=0;y<100;y++)
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for (x=0;x<160;x++)
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img[y*aa_imgwidth(context)+x]=buffer[y*2*320+x*2];
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break;
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case 23:
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for (y=0;y<66;y++)
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for (x=0;x<160;x++)
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img[y*aa_imgwidth(context)+x]=buffer[y*3*320+x*2];
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break;
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case 24:
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for (y=0;y<50;y++)
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for (x=0;x<160;x++)
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img[y*aa_imgwidth(context)+x]=buffer[y*4*320+x*2];
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break;
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default:
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fprintf(stderr,"version = %d, unknown version!\n",aaversion);
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exit(-1);
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break;
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}
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aa_renderpalette(context, palette, params, 0, 0,
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aa_scrwidth(context), aa_scrheight(context));
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aa_flush(context);
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}
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void
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D_BeginDirectRect (int x, int y, byte *pbitmap, int width, int height)
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{
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int i, j, k, plane, reps, repshift, offset, vidpage, off;
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if (vid.aspect > 1.5) {
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reps = 2;
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repshift = 1;
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} else {
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reps = 1;
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repshift = 0;
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}
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vidpage = 0;
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aa_setpage();
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for (i=0 ; i<(height << repshift) ; i += reps) {
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for (j=0 ; j<reps ; j++) {
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offset = x + ((y << repshift) + i + j)
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* vid.rowbytes;
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off = offset % 0x10000;
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if ((offset / 0x10000) != vidpage) {
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vidpage=offset / 0x10000;
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aa_setpage();
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}
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memcpy (&backingbuf[(i + j) * 24],
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vid.direct + off, width);
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memcpy (vid.direct + off,
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&pbitmap[(i >> repshift)*width],
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width);
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}
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}
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}
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void
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D_EndDirectRect (int x, int y, int width, int height)
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{
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int i, j, k, plane, reps, repshift, offset, vidpage, off;
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if (vid.aspect > 1.5) {
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reps = 2;
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repshift = 1;
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} else {
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reps = 1;
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repshift = 0;
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}
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vidpage = 0;
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aa_setpage();
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for (i=0 ; i<(height << repshift) ; i += reps) {
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for (j=0 ; j<reps ; j++) {
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offset = x + ((y << repshift) + i + j)
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* vid.rowbytes;
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off = offset % 0x10000;
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if ((offset / 0x10000) != vidpage) {
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vidpage=offset / 0x10000;
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aa_setpage();
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}
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memcpy (vid.direct + off,
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&backingbuf[(i +j)*24], width);
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}
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}
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}
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#if 0
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static void
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VID_Gamma_f(void)
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{
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float gamma, f, inf;
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unsigned char palette[768];
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int i;
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if (Cmd_Argc () == 2) {
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gamma = Q_atof (Cmd_Argv(1));
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for (i=0 ; i<768 ; i++) {
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f = pow ( (host_basepal[i]+1)/256.0 , gamma );
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inf = f*255 + 0.5;
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if (inf < 0) inf = 0;
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if (inf > 255) inf = 255;
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palette[i] = inf;
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}
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VID_SetPalette (palette);
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/* Force a surface cache flush */
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vid.recalc_refdef = 1;
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}
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}
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#endif
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static void
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VID_DescribeMode_f(void)
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{
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}
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static void
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VID_DescribeModes_f(void)
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{
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}
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/*
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================
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VID_NumModes
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================
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*/
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static int
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VID_NumModes(void)
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{ return 1;
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}
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static void
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VID_NumModes_f(void)
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{
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Con_Printf("%d modes\n", VID_NumModes());
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}
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static void
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VID_Debug_f (void)
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{
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/* Con_Printf("mode: %d\n",current_mode);
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Con_Printf("height x width: %d x %d\n",vid.height,vid.width);
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Con_Printf("bpp: %d\n",modes[current_mode].bytesperpixel*8);
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Con_Printf("vid.aspect: %f\n",vid.aspect);
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*/
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}
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void
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VID_Shutdown(void)
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{
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aa_close(context);
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free(buffer);
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}
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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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void
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VID_SetPalette(byte *palette)
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{
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static int tmppal[256*3];
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int *tp;
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int i;
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memcpy(vid_current_palette, palette, sizeof(vid_current_palette));
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tp = tmppal;
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for (i=256*3 ; i ; i--) {
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*(tp++) = *(palette++) >> 2;
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}
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if (UseDisplay) {
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vga_setpalvec(0, 256, tmppal);
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}
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}
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int
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VID_SetMode(int modenum, unsigned char *palette)
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{
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int bsize, zsize, tsize;
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int err;
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vid.aspect = ((float)vid.height / (float)vid.width) * (320.0 / 240.0);
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vid.colormap = (pixel_t *) host_colormap;
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vid.fullbright = 256 - LittleLong (*((int *)vid.colormap + 2048));
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vid.conrowbytes = vid.rowbytes;
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vid.conwidth = vid.width;
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vid.conheight = vid.height;
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vid.numpages = 1;
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vid.maxwarpwidth = WARP_WIDTH;
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vid.maxwarpheight = WARP_HEIGHT;
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/* alloc zbuffer and surface cache */
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if (d_pzbuffer) {
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D_FlushCaches();
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Hunk_FreeToHighMark (VID_highhunkmark);
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d_pzbuffer = NULL;
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vid_surfcache = NULL;
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}
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bsize = vid.rowbytes * vid.height;
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tsize = D_SurfaceCacheForRes (vid.width, vid.height);
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zsize = vid.width * vid.height * sizeof(*d_pzbuffer);
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VID_highhunkmark = Hunk_HighMark ();
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d_pzbuffer = Hunk_HighAllocName (bsize+tsize+zsize, "video");
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vid_surfcache = ((byte *)d_pzbuffer) + zsize;
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vid.conbuffer = vid.buffer = (pixel_t *)(((byte *)d_pzbuffer) + zsize + tsize);
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D_InitCaches (vid_surfcache, tsize);
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if (!context)
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if (context = aa_autoinit(&aa_defparams)) {
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if (buffer = malloc(64000)) {
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params = aa_getrenderparams();
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params->bright = 100;
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params->contrast = 100;
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memset(aa_image(context), 0,
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aa_imgwidth(context) * aa_imgheight(context));
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fprintf(stderr,"%d,%d\n",
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aa_imgwidth(context),
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aa_imgheight(context));
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if (aa_imgwidth(context)>=320)
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aaversion=10;
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else
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aaversion=20;
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if (aa_imgheight(context)>=200)
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aaversion+=1;
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else if (aa_imgheight(context)>=100)
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aaversion+=2;
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else if (aa_imgheight(context)>=66)
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aaversion+=3;
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else
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aaversion+=4
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} else
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exit((perror("malloc"),-1));
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} else {
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fprintf(stderr, "set video failed!\n", x);
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exit(-1);
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}
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VID_SetPalette(palette);
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aa_setpage();
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/* Force a surface cache flush */
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vid.recalc_refdef = 1;
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return 1;
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}
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void
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VID_Init(unsigned char *palette)
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{
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int w, h, d;
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int err;
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#if 0
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Cmd_AddCommand ("gamma", VID_Gamma_f);
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#endif
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if (UseDisplay) {
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vid_mode = Cvar_Get ("vid_mode","5",0,"None");
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vid_redrawfull = Cvar_Get ("vid_redrawfull","0",0,"None");
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vid_waitforrefresh = Cvar_Get ("vid_waitforrefresh","0",
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CVAR_ARCHIVE,"None");
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Cmd_AddCommand("vid_nummodes", VID_NumModes_f);
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Cmd_AddCommand("vid_describemode", VID_DescribeMode_f);
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Cmd_AddCommand("vid_describemodes", VID_DescribeModes_f);
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Cmd_AddCommand("vid_debug", VID_Debug_f);
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/* Interpret command-line params */
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w = h = d = 0;
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if (getenv("GSVGAMODE")) {
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current_mode = get_mode(getenv("AAMODE"), w, h, d);
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} else if (COM_CheckParm("-mode")) {
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current_mode = get_mode(com_argv[COM_CheckParm("-mode")+1], w, h, d);
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} else if (COM_CheckParm("-w") || COM_CheckParm("-h")
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|| COM_CheckParm("-d")) {
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if (COM_CheckParm("-w")) {
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w = Q_atoi(com_argv[COM_CheckParm("-w")+1]);
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}
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if (COM_CheckParm("-h")) {
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h = Q_atoi(com_argv[COM_CheckParm("-h")+1]);
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}
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if (COM_CheckParm("-d")) {
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d = Q_atoi(com_argv[COM_CheckParm("-d")+1]);
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}
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current_mode = get_mode(0, w, h, d);
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} else {
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current_mode = 5;
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}
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/* Set vid parameters */
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VID_SetMode(current_mode, palette);
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VID_SetPalette(palette);
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}
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}
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void
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VID_Update(vrect_t *rects)
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{
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int ycount;
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int offset;
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int vidpage=0;
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vga_setpage();
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while (rects) {
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ycount = rects->height;
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offset = rects->y * vid.rowbytes + rects->x;
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while (ycount--) {
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register int i = offset % 0x10000;
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if ((offset / 0x10000) != vidpage) {
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vidpage=offset / 0x10000;
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aa_setpage();
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}
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if (rects->width + i > 0x10000) {
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memcpy(framebuffer_ptr + i,
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vid.buffer + offset,
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0x10000 - i);
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aa_setpage();
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memcpy(framebuffer_ptr,
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vid.buffer + offset + 0x10000 - i,
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rects->width - 0x10000 + i);
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} else {
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memcpy(framebuffer_ptr + i,
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vid.buffer + offset,
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rects->width);
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}
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offset += vid.rowbytes;
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}
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rects = rects->pnext;
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}
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}
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if (vid_mode->value != current_mode) {
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VID_SetMode ((int)vid_mode->value, vid_current_palette);
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}
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}
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static int dither = 0;
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void
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VID_DitherOn(void)
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{
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if (dither == 0) {
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#if 0
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R_ViewChanged (&vrect, sb_lines, vid.aspect);
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#endif
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dither = 1;
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}
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}
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void
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VID_DitherOff(void)
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{
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if (dither) {
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#if 0
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R_ViewChanged (&vrect, sb_lines, vid.aspect);
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#endif
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dither = 0;
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}
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}
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/*
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================
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VID_ModeInfo
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================
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*/
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char *
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VID_ModeInfo (int modenum)
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{
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/* static char *badmodestr = "Bad mode number";
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static char modestr[40];
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if (modenum == 0) {
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snprintf(modestr, sizeof(modestr), "%d x %d, %d bpp",
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vid.width, vid.height, modes[current_mode].bytesperpixel*8);
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return (modestr);
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} else {
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return (badmodestr);
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}
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*/
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}
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void
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VID_ExtraOptionDraw(unsigned int options_draw_cursor)
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{
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/* No extra option menu items yet */
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}
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void
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VID_ExtraOptionCmd(int option_cursor)
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{
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#if 0
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switch(option_cursor) {
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case 1: // Always start with 1
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break;
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}
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#endif
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}
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void VID_InitCvars ()
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{
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// It may not look it, but this is important
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}
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