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  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.