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  1. // Emacs style mode select   -*- C++ -*-
  2. //-----------------------------------------------------------------------------
  3. //
  4. // $Id:$
  5. //
  6. // Copyright (C) 1993-1996 by id Software, Inc.
  7. //
  8. // This source is available for distribution and/or modification
  9. // only under the terms of the DOOM Source Code License as
  10. // published by id Software. All rights reserved.
  11. //
  12. // The source is distributed in the hope that it will be useful,
  13. // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14. // FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License
  15. // for more details.
  16. //
  17. // DESCRIPTION:
  18. //      Gamma correction LUT.
  19. //      Functions to draw patches (by post) directly to screen.
  20. //      Functions to blit a block to the screen.
  21. //
  22. //-----------------------------------------------------------------------------
  23.  
  24.  
  25. #ifndef __V_VIDEO__
  26. #define __V_VIDEO__
  27.  
  28. #include "doomtype.h"
  29.  
  30. #include "doomdef.h"
  31.  
  32. // Needed because we are refering to patches.
  33. #include "r_data.h"
  34.  
  35. //
  36. // VIDEO
  37. //
  38.  
  39. #define CENTERY                 (SCREENHEIGHT/2)
  40.  
  41.  
  42. // Screen 0 is the screen updated by I_Update screen.
  43. // Screen 1 is an extra buffer.
  44.  
  45.  
  46.  
  47. extern  byte*           screens[5];
  48.  
  49. extern  int     dirtybox[4];
  50.  
  51. extern  byte    gammatable[5][256];
  52. extern  int     usegamma;
  53.  
  54.  
  55.  
  56. // Allocates buffer screens, call before R_Init.
  57. void V_Init (void);
  58.  
  59.  
  60. void
  61. V_CopyRect
  62. ( int           srcx,
  63.   int           srcy,
  64.   int           srcscrn,
  65.   int           width,
  66.   int           height,
  67.   int           destx,
  68.   int           desty,
  69.   int           destscrn );
  70.  
  71. void
  72. V_DrawPatch
  73. ( int           x,
  74.   int           y,
  75.   int           scrn,
  76.   patch_t*      patch);
  77.  
  78. void
  79. V_DrawPatchDirect
  80. ( int           x,
  81.   int           y,
  82.   int           scrn,
  83.   patch_t*      patch );
  84.  
  85.  
  86. // Draw a linear block of pixels into the view buffer.
  87. void
  88. V_DrawBlock
  89. ( int           x,
  90.   int           y,
  91.   int           scrn,
  92.   int           width,
  93.   int           height,
  94.   byte*         src );
  95.  
  96. // Reads a linear block of pixels into the view buffer.
  97. void
  98. V_GetBlock
  99. ( int           x,
  100.   int           y,
  101.   int           scrn,
  102.   int           width,
  103.   int           height,
  104.   byte*         dest );
  105.  
  106.  
  107. void
  108. V_MarkRect
  109. ( int           x,
  110.   int           y,
  111.   int           width,
  112.   int           height );
  113.  
  114. #endif
  115. //-----------------------------------------------------------------------------
  116. //
  117. // $Log:$
  118. //
  119. //-----------------------------------------------------------------------------
  120.