r_draw.h

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//
// Copyright(C) 1993-1996 Id Software, Inc.
// Copyright(C) 2005-2014 Simon Howard
//
// 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.
//
// DESCRIPTION:
//  System specific interface stuff.
//
 
 
#ifndef __R_DRAW__
#define __R_DRAW__
 
 
 
 
extern lighttable_t*    dc_colormap;
extern int      dc_x;
extern int      dc_yl;
extern int      dc_yh;
extern fixed_t      dc_iscale;
extern fixed_t      dc_texturemid;
 
// first pixel in a column
extern byte*        dc_source;      
 
 
// The span blitting interface.
// Hook in assembler or system specific BLT
//  here.
void    R_DrawColumn (void);
void    R_DrawColumnLow (void);
 
// The Spectre/Invisibility effect.
void    R_DrawFuzzColumn (void);
void    R_DrawFuzzColumnLow (void);
 
// Draw with color translation tables,
//  for player sprite rendering,
//  Green/Red/Blue/Indigo shirts.
void    R_DrawTranslatedColumn (void);
void    R_DrawTranslatedColumnLow (void);
 
void
R_VideoErase
( unsigned  ofs,
  int       count );
 
extern int      ds_y;
extern int      ds_x1;
extern int      ds_x2;
 
extern lighttable_t*    ds_colormap;
 
extern fixed_t      ds_xfrac;
extern fixed_t      ds_yfrac;
extern fixed_t      ds_xstep;
extern fixed_t      ds_ystep;
 
// start of a 64*64 tile image
extern byte*        ds_source;      
 
extern byte*        translationtables;
extern byte*        dc_translation;
 
 
// Span blitting for rows, floor/ceiling.
// No Sepctre effect needed.
void    R_DrawSpan (void);
 
// Low resolution mode, 160x200?
void    R_DrawSpanLow (void);
 
 
void
R_InitBuffer
( int       width,
  int       height );
 
 
// Initialize color translation tables,
//  for player rendering etc.
void    R_InitTranslationTables (void);
 
 
 
// Rendering function.
void R_FillBackScreen (void);
 
// If the view size is not full screen, draws a border around it.
void R_DrawViewBorder (void);
 
 
 
#endif