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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.h -- video driver defs
  21.  
  22. #define VID_CBITS       6
  23. #define VID_GRADES      (1 << VID_CBITS)
  24.  
  25. // a pixel can be one, two, or four bytes
  26. typedef byte pixel_t;
  27.  
  28. typedef struct vrect_s
  29. {
  30.         int                             x,y,width,height;
  31.         struct vrect_s  *pnext;
  32. } vrect_t;
  33.  
  34. typedef struct
  35. {
  36.         pixel_t                 *buffer;                // invisible buffer
  37.         pixel_t                 *colormap;              // 256 * VID_GRADES size
  38.         unsigned short  *colormap16;    // 256 * VID_GRADES size
  39.         int                             fullbright;             // index of first fullbright color
  40.         unsigned                rowbytes;       // may be > width if displayed in a window
  41.         unsigned                width;         
  42.         unsigned                height;
  43.         float                   aspect;         // width / height -- < 0 is taller than wide
  44.         int                             numpages;
  45.         int                             recalc_refdef;  // if true, recalc vid-based stuff
  46.         pixel_t                 *conbuffer;
  47.         int                             conrowbytes;
  48.         unsigned                conwidth;
  49.         unsigned                conheight;
  50.         int                             maxwarpwidth;
  51.         int                             maxwarpheight;
  52.         pixel_t                 *direct;                // direct drawing to framebuffer, if not
  53.                                                                         //  NULL
  54. } viddef_t;
  55.  
  56. extern  viddef_t        vid;                            // global video state
  57. extern  unsigned short  d_8to16table[256];
  58. extern  unsigned        d_8to24table[256];
  59. extern void (*vid_menudrawfn)(void);
  60. extern void (*vid_menukeyfn)(int key);
  61.  
  62. void    VID_SetPalette (unsigned char *palette);
  63. // called at startup and after any gamma correction
  64.  
  65. void    VID_ShiftPalette (unsigned char *palette);
  66. // called for bonus and pain flashes, and for underwater color changes
  67.  
  68. void    VID_Init (unsigned char *palette);
  69. // Called at startup to set up translation tables, takes 256 8 bit RGB values
  70. // the palette data will go away after the call, so it must be copied off if
  71. // the video driver will need it again
  72.  
  73. void    VID_Shutdown (void);
  74. // Called at shutdown
  75.  
  76. void    VID_Update (vrect_t *rects);
  77. // flushes the given rectangles from the view buffer to the screen
  78.  
  79. int VID_SetMode (int modenum, unsigned char *palette);
  80. // sets the mode; only used by the Quake engine for resetting to mode 0 (the
  81. // base mode) on memory allocation failures
  82.  
  83. void VID_HandlePause (qboolean pause);
  84. // called only on Win32, when pause happens, so the mouse can be released
  85.  
  86.