1 /* 2 Copyright (C) 1996-1997 Id Software, Inc. 3 4 This program is free software; you can redistribute it and/or 5 modify it under the terms of the GNU General Public License 6 as published by the Free Software Foundation; either version 2 7 of the License, or (at your option) any later version. 8 9 This program is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 12 13 See the GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this program; if not, write to the Free Software 17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 18 19 */ 20 // vid_dos.h: header file for DOS-specific video stuff 21 22 typedef struct vmode_s { 23 struct vmode_s *pnext; 24 char *name; 25 char *header; 26 unsigned width; 27 unsigned height; 28 float aspect; 29 unsigned rowbytes; 30 int planar; 31 int numpages; 32 void *pextradata; 33 int (*setmode)(viddef_t *vid, struct vmode_s *pcurrentmode); 34 void (*swapbuffers)(viddef_t *vid, struct vmode_s *pcurrentmode, 35 vrect_t *rects); 36 void (*setpalette)(viddef_t *vid, struct vmode_s *pcurrentmode, 37 unsigned char *palette); 38 void (*begindirectrect)(viddef_t *vid, struct vmode_s *pcurrentmode, 39 int x, int y, byte *pbitmap, int width, 40 int height); 41 void (*enddirectrect)(viddef_t *vid, struct vmode_s *pcurrentmode, 42 int x, int y, int width, int height); 43 } vmode_t; 44 45 // vid_wait settings 46 #define VID_WAIT_NONE 0 47 #define VID_WAIT_VSYNC 1 48 #define VID_WAIT_DISPLAY_ENABLE 2 49 50 extern int numvidmodes; 51 extern vmode_t *pvidmodes; 52 53 extern int VGA_width, VGA_height, VGA_rowbytes, VGA_bufferrowbytes; 54 extern byte *VGA_pagebase; 55 extern vmode_t *VGA_pcurmode; 56 57 extern cvar_t vid_wait; 58 extern cvar_t vid_nopageflip; 59 extern cvar_t _vid_wait_override; 60 61 extern unsigned char colormap256[32][256]; 62 63 extern void *vid_surfcache; 64 extern int vid_surfcachesize; 65 66 void VGA_Init (void); 67 void VID_InitVESA (void); 68 void VID_InitExtra (void); 69 void VGA_WaitVsync (void); 70 void VGA_ClearVideoMem (int planar); 71 void VGA_SetPalette(viddef_t *vid, vmode_t *pcurrentmode, unsigned char *pal); 72 void VGA_SwapBuffersCopy (viddef_t *vid, vmode_t *pcurrentmode, 73 vrect_t *rects); 74 qboolean VGA_FreeAndAllocVidbuffer (viddef_t *vid, int allocnewbuffer); 75 qboolean VGA_CheckAdequateMem (int width, int height, int rowbytes, 76 int allocnewbuffer); 77 void VGA_BeginDirectRect (viddef_t *vid, struct vmode_s *pcurrentmode, int x, 78 int y, byte *pbitmap, int width, int height); 79 void VGA_EndDirectRect (viddef_t *vid, struct vmode_s *pcurrentmode, int x, 80 int y, int width, int height); 81 void VGA_UpdateLinearScreen (void *srcptr, void *destptr, int width, 82 int height, int srcrowbytes, int destrowbytes); 83 84
