ref: 83d4cf3fd1a257df21468f5bb3b4329e5cf8a40f
dir: /u/vid_dos.c/
/*
Copyright (C) 1996-1997 Id Software, Inc.
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 the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
//
// vid_dos.c: DOS-specific video routines
//
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <dos.h>
#include <dpmi.h>
#include <go32.h>
#include "quakedef.h"
#include "d_local.h"
#include "dosisms.h"
#include "vid_dos.h"
int vid_modenum;
vmode_t *pcurrentmode = NULL;
int vid_testingmode, vid_realmode;
double vid_testendtime;
cvar_t vid_mode = {"vid_mode","0", false};
cvar_t vid_wait = {"vid_wait","0"};
cvar_t vid_nopageflip = {"vid_nopageflip","0", true};
cvar_t _vid_wait_override = {"_vid_wait_override", "0", true};
cvar_t _vid_default_mode = {"_vid_default_mode","0", true};
cvar_t _vid_default_mode_win = {"_vid_default_mode_win","1", true};
cvar_t vid_config_x = {"vid_config_x","800", true};
cvar_t vid_config_y = {"vid_config_y","600", true};
cvar_t vid_stretch_by_2 = {"vid_stretch_by_2","1", true};
cvar_t _windowed_mouse = {"_windowed_mouse","0", true};
cvar_t vid_fullscreen_mode = {"vid_fullscreen_mode","3", true};
cvar_t vid_windowed_mode = {"vid_windowed_mode","0", true};
cvar_t block_switch = {"block_switch","0", true};
cvar_t vid_window_x = {"vid_window_x", "0", true};
cvar_t vid_window_y = {"vid_window_y", "0", true};
int d_con_indirect = 0;
int numvidmodes;
vmode_t *pvidmodes;
static int firstupdate = 1;
extern regs_t regs;
void VID_TestMode_f (void);
void VID_NumModes_f (void);
void VID_DescribeCurrentMode_f (void);
void VID_DescribeMode_f (void);
void VID_DescribeModes_f (void);
byte vid_current_palette[768]; // save for mode changes
static qboolean nomodecheck = false;
unsigned short d_8to16table[256]; // not used in 8 bpp mode
unsigned d_8to24table[256]; // not used in 8 bpp mode
void VID_MenuDraw (void);
void VID_MenuKey (int key);
/*
================
VID_Init
================
*/
void VID_Init (unsigned char *palette)
{
Cvar_RegisterVariable (&vid_mode);
Cvar_RegisterVariable (&vid_wait);
Cvar_RegisterVariable (&vid_nopageflip);
Cvar_RegisterVariable (&_vid_wait_override);
Cvar_RegisterVariable (&_vid_default_mode);
Cvar_RegisterVariable (&_vid_default_mode_win);
Cvar_RegisterVariable (&vid_config_x);
Cvar_RegisterVariable (&vid_config_y);
Cvar_RegisterVariable (&vid_stretch_by_2);
Cvar_RegisterVariable (&_windowed_mouse);
Cvar_RegisterVariable (&vid_fullscreen_mode);
Cvar_RegisterVariable (&vid_windowed_mode);
Cvar_RegisterVariable (&block_switch);
Cmd_AddCommand ("vid_testmode", VID_TestMode_f);
Cmd_AddCommand ("vid_nummodes", VID_NumModes_f);
Cmd_AddCommand ("vid_describecurrentmode", VID_DescribeCurrentMode_f);
Cmd_AddCommand ("vid_describemode", VID_DescribeMode_f);
Cmd_AddCommand ("vid_describemodes", VID_DescribeModes_f);
// set up the mode list; note that later inits link in their modes ahead of
// earlier ones, so the standard VGA modes are always first in the list. This
// is important because mode 0 must always be VGA mode 0x13
if (!COM_CheckParm ("-stdvid"))
VID_InitExtra ();
VGA_Init ();
vid_testingmode = 0;
vid_modenum = vid_mode.value;
VID_SetMode (vid_modenum, palette);
vid_realmode = vid_modenum;
vid_menudrawfn = VID_MenuDraw;
vid_menukeyfn = VID_MenuKey;
}
/*
=================
VID_GetModePtr
=================
*/
vmode_t *VID_GetModePtr (int modenum)
{
vmode_t *pv;
pv = pvidmodes;
if (!pv)
Sys_Error ("VID_GetModePtr: empty vid mode list");
while (modenum--)
{
pv = pv->pnext;
if (!pv)
Sys_Error ("VID_GetModePtr: corrupt vid mode list");
}
return pv;
}
/*
================
VID_NumModes
================
*/
int VID_NumModes ()
{
return (numvidmodes);
}
/*
================
VID_ModeInfo
================
*/
char *VID_ModeInfo (int modenum, char **ppheader)
{
static char *badmodestr = "Bad mode number";
vmode_t *pv;
pv = VID_GetModePtr (modenum);
if (!pv)
{
if (ppheader)
*ppheader = NULL;
return badmodestr;
}
else
{
if (ppheader)
*ppheader = pv->header;
return pv->name;
}
}
/*
================
VID_SetMode
================
*/
int VID_SetMode (int modenum, unsigned char *palette)
{
int stat;
vmode_t *pnewmode, *poldmode;
if ((modenum >= numvidmodes) || (modenum < 0))
{
Cvar_SetValue ("vid_mode", (float)vid_modenum);
nomodecheck = true;
Con_Printf ("No such video mode: %d\n", modenum);
nomodecheck = false;
if (pcurrentmode == NULL)
{
modenum = 0; // mode hasn't been set yet, so initialize to base
// mode since they gave us an invalid initial mode
}
else
{
return 0;
}
}
pnewmode = VID_GetModePtr (modenum);
if (pnewmode == pcurrentmode)
return 1; // already in the desired mode
// initialize the new mode
poldmode = pcurrentmode;
pcurrentmode = pnewmode;
vid.width = pcurrentmode->width;
vid.height = pcurrentmode->height;
vid.aspect = pcurrentmode->aspect;
vid.rowbytes = pcurrentmode->rowbytes;
stat = (*pcurrentmode->setmode) (&vid, pcurrentmode);
if (stat < 1)
{
if (stat == 0)
{
// real, hard failure that requires resetting the mode
if (!VID_SetMode (vid_modenum, palette)) // restore prior mode
Sys_Error ("VID_SetMode: Unable to set any mode, probably "
"because there's not enough memory available");
Con_Printf ("Failed to set mode %d\n", modenum);
return 0;
}
else if (stat == -1)
{
// not enough memory; just put things back the way they were
pcurrentmode = poldmode;
vid.width = pcurrentmode->width;
vid.height = pcurrentmode->height;
vid.aspect = pcurrentmode->aspect;
vid.rowbytes = pcurrentmode->rowbytes;
return 0;
}
else
{
Sys_Error ("VID_SetMode: invalid setmode return code %d");
}
}
(*pcurrentmode->setpalette) (&vid, pcurrentmode, palette);
vid_modenum = modenum;
Cvar_SetValue ("vid_mode", (float)vid_modenum);
nomodecheck = true;
Con_Printf ("%s\n", VID_ModeInfo (vid_modenum, NULL));
nomodecheck = false;
vid.recalc_refdef = 1;
return 1;
}
/*
================
VID_SetPalette
================
*/
void VID_SetPalette (unsigned char *palette)
{
if (palette != vid_current_palette)
Q_memcpy(vid_current_palette, palette, 768);
(*pcurrentmode->setpalette)(&vid, pcurrentmode, vid_current_palette);
}
/*
================
VID_ShiftPalette
================
*/
void VID_ShiftPalette (unsigned char *palette)
{
VID_SetPalette (palette);
}
/*
================
VID_Shutdown
================
*/
void VID_Shutdown (void)
{
regs.h.ah = 0;
regs.h.al = 0x3;
dos_int86(0x10);
vid_testingmode = 0;
}
/*
================
VID_Update
================
*/
void VID_Update (vrect_t *rects)
{
if (firstupdate && _vid_default_mode.value)
{
if(_vid_default_mode.value >= numvidmodes)
Cvar_SetValue ("_vid_default_mode", 0);
firstupdate = 0;
Cvar_SetValue ("vid_mode", _vid_default_mode.value);
}
(*pcurrentmode->swapbuffers)(&vid, pcurrentmode, rects);
if (!nomodecheck)
{
if (vid_testingmode)
{
if (realtime >= vid_testendtime)
{
VID_SetMode (vid_realmode, vid_current_palette);
vid_testingmode = 0;
}
}
else
{
if (vid_mode.value != vid_realmode)
{
VID_SetMode ((int)vid_mode.value, vid_current_palette);
Cvar_SetValue ("vid_mode", (float)vid_modenum);
// so if mode set fails, we don't keep on
// trying to set that mode
vid_realmode = vid_modenum;
}
}
}
}
/*
=================
VID_NumModes_f
=================
*/
void VID_NumModes_f (void)
{
int nummodes;
nummodes = VID_NumModes ();
if (nummodes == 1)
Con_Printf ("%d video mode is available\n", VID_NumModes ());
else
Con_Printf ("%d video modes are available\n", VID_NumModes ());
}
/*
=================
VID_DescribeCurrentMode_f
=================
*/
void VID_DescribeCurrentMode_f (void)
{
Con_Printf ("%s\n", VID_ModeInfo (vid_modenum, NULL));
}
/*
=================
VID_DescribeMode_f
=================
*/
void VID_DescribeMode_f (void)
{
int modenum;
modenum = Q_atoi (Cmd_Argv(1));
Con_Printf ("%s\n", VID_ModeInfo (modenum, NULL));
}
/*
=================
VID_DescribeModes_f
=================
*/
void VID_DescribeModes_f (void)
{
int i, nummodes;
char *pinfo, *pheader;
vmode_t *pv;
qboolean na;
na = false;
nummodes = VID_NumModes ();
for (i=0 ; i<nummodes ; i++)
{
pv = VID_GetModePtr (i);
pinfo = VID_ModeInfo (i, &pheader);
if (pheader)
Con_Printf ("\n%s\n", pheader);
if (VGA_CheckAdequateMem (pv->width, pv->height, pv->rowbytes,
(pv->numpages == 1) || vid_nopageflip.value))
{
Con_Printf ("%2d: %s\n", i, pinfo);
}
else
{
Con_Printf ("**: %s\n", pinfo);
na = true;
}
}
if (na)
{
Con_Printf ("\n[**: not enough system RAM for mode]\n");
}
}
/*
=================
VID_GetModeDescription
=================
*/
char *VID_GetModeDescription (int mode)
{
char *pinfo, *pheader;
vmode_t *pv;
pv = VID_GetModePtr (mode);
pinfo = VID_ModeInfo (mode, &pheader);
if (VGA_CheckAdequateMem (pv->width, pv->height, pv->rowbytes,
(pv->numpages == 1) || vid_nopageflip.value))
{
return pinfo;
}
else
{
return NULL;
}
}
/*
=================
VID_TestMode_f
=================
*/
void VID_TestMode_f (void)
{
int modenum;
double testduration;
if (!vid_testingmode)
{
modenum = Q_atoi (Cmd_Argv(1));
if (VID_SetMode (modenum, vid_current_palette))
{
vid_testingmode = 1;
testduration = Q_atof (Cmd_Argv(2));
if (testduration == 0)
testduration = 5.0;
vid_testendtime = realtime + testduration;
}
}
}
/*
================
D_BeginDirectRect
================
*/
void D_BeginDirectRect (int x, int y, byte *pbitmap, int width, int height)
{
if (!vid.direct || !pcurrentmode)
return;
if ((width > 24) || (height > 24) || (width < 1) || (height < 1))
return;
if (width & 0x03)
return;
(*pcurrentmode->begindirectrect) (&vid, pcurrentmode, x, y, pbitmap, width,
height);
}
/*
================
D_EndDirectRect
================
*/
void D_EndDirectRect (int x, int y, int width, int height)
{
if (!vid.direct || !pcurrentmode)
return;
if ((width > 24) || (height > 24) || (width < 1) || (height < 1))
return;
if ((width & 0x03) || (height & 0x03))
return;
(*pcurrentmode->enddirectrect) (&vid, pcurrentmode, x, y, width, height);
}
//===========================================================================
extern void M_Menu_Options_f (void);
extern void M_Print (int cx, int cy, char *str);
extern void M_PrintWhite (int cx, int cy, char *str);
extern void M_DrawCharacter (int cx, int line, int num);
extern void M_DrawTransPic (int x, int y, qpic_t *pic);
extern void M_DrawPic (int x, int y, qpic_t *pic);
static int vid_line, vid_wmodes, vid_column_size;
typedef struct
{
int modenum;
char *desc;
int iscur;
} modedesc_t;
#define MAX_COLUMN_SIZE 11
#define MAX_MODEDESCS (MAX_COLUMN_SIZE*3)
static modedesc_t modedescs[MAX_MODEDESCS];
/*
================
VID_MenuDraw
================
*/
void VID_MenuDraw (void)
{
qpic_t *p;
char *ptr;
int nummodes, i, j, column, row, dup;
char temp[100];
vid_wmodes = 0;
nummodes = VID_NumModes ();
p = Draw_CachePic ("gfx/vidmodes.lmp");
M_DrawPic ( (320-p->width)/2, 4, p);
for (i=0 ; i<nummodes ; i++)
{
if (vid_wmodes < MAX_MODEDESCS)
{
if (i != 1)
{
ptr = VID_GetModeDescription (i);
if (ptr)
{
dup = 0;
for (j=0 ; j<vid_wmodes ; j++)
{
if (!strcmp (modedescs[j].desc, ptr))
{
if (modedescs[j].modenum != 0)
{
modedescs[j].modenum = i;
dup = 1;
if (i == vid_modenum)
modedescs[j].iscur = 1;
}
else
{
dup = 1;
}
break;
}
}
if (!dup)
{
modedescs[vid_wmodes].modenum = i;
modedescs[vid_wmodes].desc = ptr;
modedescs[vid_wmodes].iscur = 0;
if (i == vid_modenum)
modedescs[vid_wmodes].iscur = 1;
vid_wmodes++;
}
}
}
}
}
vid_column_size = (vid_wmodes + 2) / 3;
column = 16;
row = 36;
for (i=0 ; i<vid_wmodes ; i++)
{
if (modedescs[i].iscur)
M_PrintWhite (column, row, modedescs[i].desc);
else
M_Print (column, row, modedescs[i].desc);
row += 8;
if ((i % vid_column_size) == (vid_column_size - 1))
{
column += 13*8;
row = 36;
}
}
// line cursor
if (vid_testingmode)
{
sprintf (temp, "TESTING %s",
modedescs[vid_line].desc);
M_Print (13*8, 36 + MAX_COLUMN_SIZE * 8 + 8*4, temp);
M_Print (9*8, 36 + MAX_COLUMN_SIZE * 8 + 8*6,
"Please wait 5 seconds...");
}
else
{
M_Print (9*8, 36 + MAX_COLUMN_SIZE * 8 + 8,
"Press Enter to set mode");
M_Print (6*8, 36 + MAX_COLUMN_SIZE * 8 + 8*3,
"T to test mode for 5 seconds");
ptr = VID_GetModeDescription (vid_modenum);
sprintf (temp, "D to make %s the default", ptr);
M_Print (6*8, 36 + MAX_COLUMN_SIZE * 8 + 8*5, temp);
ptr = VID_GetModeDescription ((int)_vid_default_mode.value);
if (ptr)
{
sprintf (temp, "Current default is %s", ptr);
M_Print (7*8, 36 + MAX_COLUMN_SIZE * 8 + 8*6, temp);
}
M_Print (15*8, 36 + MAX_COLUMN_SIZE * 8 + 8*8,
"Esc to exit");
row = 36 + (vid_line % vid_column_size) * 8;
column = 8 + (vid_line / vid_column_size) * 13*8;
M_DrawCharacter (column, row, 12+((int)(realtime*4)&1));
}
}
/*
================
VID_MenuKey
================
*/
void VID_MenuKey (int key)
{
if (vid_testingmode)
return;
switch (key)
{
case K_ESCAPE:
S_LocalSound ("misc/menu1.wav");
M_Menu_Options_f ();
break;
case K_UPARROW:
S_LocalSound ("misc/menu1.wav");
vid_line--;
if (vid_line < 0)
vid_line = vid_wmodes - 1;
break;
case K_DOWNARROW:
S_LocalSound ("misc/menu1.wav");
vid_line++;
if (vid_line >= vid_wmodes)
vid_line = 0;
break;
case K_LEFTARROW:
S_LocalSound ("misc/menu1.wav");
vid_line -= vid_column_size;
if (vid_line < 0)
{
vid_line += ((vid_wmodes + (vid_column_size - 1)) /
vid_column_size) * vid_column_size;
while (vid_line >= vid_wmodes)
vid_line -= vid_column_size;
}
break;
case K_RIGHTARROW:
S_LocalSound ("misc/menu1.wav");
vid_line += vid_column_size;
if (vid_line >= vid_wmodes)
{
vid_line -= ((vid_wmodes + (vid_column_size - 1)) /
vid_column_size) * vid_column_size;
while (vid_line < 0)
vid_line += vid_column_size;
}
break;
case K_ENTER:
S_LocalSound ("misc/menu1.wav");
VID_SetMode (modedescs[vid_line].modenum, vid_current_palette);
break;
case 'T':
case 't':
S_LocalSound ("misc/menu1.wav");
if (VID_SetMode (modedescs[vid_line].modenum, vid_current_palette))
{
vid_testingmode = 1;
vid_testendtime = realtime + 5.0;
}
break;
case 'D':
case 'd':
S_LocalSound ("misc/menu1.wav");
firstupdate = 0;
Cvar_SetValue ("_vid_default_mode", vid_modenum);
break;
default:
break;
}
}