ref: 02611e064eceed8d8cda8cc4d6e60f8f1833ea72
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; } }