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quakeforge/libs/video/targets/vid_dos.c

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/*
vid_dos.c
@description@
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:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
$Id$
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <dos.h>
#include <dpmi.h>
#include <go32.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;
cvar_t *vid_wait;
cvar_t *vid_nopageflip;
cvar_t *_vid_wait_override;
cvar_t *_vid_default_mode;
cvar_t *_vid_default_mode_win;
cvar_t *vid_config_x;
cvar_t *vid_config_y;
cvar_t *vid_stretch_by_2;
cvar_t *_windowed_mouse;
cvar_t *vid_fullscreen_mode;
cvar_t *vid_windowed_mode;
cvar_t *block_switch;
cvar_t *vid_window_x;
cvar_t *vid_window_y;
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);
void
VID_InitCvars (void)
{
}
/*
================
VID_Init
================
*/
void
VID_Init (unsigned char *palette)
{
vid_mode = Cvar_Get ("vid_mode", "0", CVAR_NONE, NULL, "None");
vid_wait = Cvar_Get ("vid_wait", "0", CVAR_NONE, NULL, "None");
vid_nopageflip = Cvar_Get ("vid_nopageflip", "0", CVAR_ARCHIVE, NULL,
"None");
_vid_wait_override =
Cvar_Get ("_vid_wait_override", "0", CVAR_ARCHIVE, NULL, "None");
_vid_default_mode =
Cvar_Get ("_vid_default_mode", "0", CVAR_ARCHIVE, NULL, "None");
_vid_default_mode_win =
Cvar_Get ("_vid_default_mode_win", "3", CVAR_ARCHIVE, NULL, "None");
vid_config_x = Cvar_Get ("vid_config_x", "800", CVAR_ARCHIVE, NULL, "None");
vid_config_y = Cvar_Get ("vid_config_y", "600", CVAR_ARCHIVE, NULL, "None");
vid_stretch_by_2 = Cvar_Get ("vid_stretch_by_2", "1", CVAR_ARCHIVE, NULL,
"None");
_windowed_mouse = Cvar_Get ("_windowed_mouse", "0", CVAR_ARCHIVE, NULL,
"None");
vid_fullscreen_mode =
Cvar_Get ("vid_fullscreen_mode", "3", CVAR_ARCHIVE, NULL, "None");
vid_windowed_mode =
Cvar_Get ("vid_windowed_mode", "0", CVAR_ARCHIVE, NULL, "None");
block_switch = Cvar_Get ("block_switch", "0", CVAR_ARCHIVE, NULL, "None");
Cmd_AddCommand ("vid_testmode", VID_TestMode_f, "No Description");
Cmd_AddCommand ("vid_nummodes", VID_NumModes_f, "No Description");
Cmd_AddCommand ("vid_describecurrentmode", VID_DescribeCurrentMode_f,
"No Description");
Cmd_AddCommand ("vid_describemode", VID_DescribeMode_f, "No Description");
Cmd_AddCommand ("vid_describemodes", VID_DescribeModes_f, "No Description");
// 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->int_val;
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->int_val) {
if (_vid_default_mode->int_val >= numvidmodes)
Cvar_SetValue (_vid_default_mode, 0);
firstupdate = 0;
Cvar_SetValue (vid_mode, _vid_default_mode->int_val);
}
(*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->int_val != vid_realmode) {
VID_SetMode (vid_mode->int_val, 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->int_val)) {
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->int_val)) {
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) {
snprintf (temp, sizeof (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);
snprintf (temp, sizeof (temp), "D to make %s the default", ptr);
M_Print (6 * 8, 36 + MAX_COLUMN_SIZE * 8 + 8 * 5, temp);
ptr = VID_GetModeDescription (_vid_default_mode->int_val);
if (ptr) {
snprintf (temp, sizeof (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;
}
}
void
VID_HandlePause (qboolean pause)
{
}
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