common/r_data.h

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// Emacs style mode select   -*- C++ -*-
//-----------------------------------------------------------------------------
//
// $Id: r_data.h 1837 2010-09-02 04:21:09Z spleen $
//
// Copyright (C) 1993-1996 by id Software, Inc.
// Copyright (C) 2006-2010 by The Odamex Team.
//
// 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:
//  Refresh module, data I/O, caching, retrieval of graphics
//  by name.
//
//-----------------------------------------------------------------------------


#ifndef __R_DATA__
#define __R_DATA__

#include "r_defs.h"
#include "r_state.h"

// Retrieve column data for span blitting.
byte*
R_GetColumn
( int           tex,
  int           col );


// I/O, setting up the stuff.
void R_InitData (void);
void R_PrecacheLevel (void);


// Retrieval.
// Floor/ceiling opaque texture tiles,
// lookup by name. For animation?
int R_FlatNumForName (const char *name);
inline int R_FlatNumForName (const byte *name) { return R_FlatNumForName ((const char *)name); }


// Called by P_Ticker for switches and animations,
// returns the texture number for the texture name.
int R_TextureNumForName (const char *name);
int R_CheckTextureNumForName (const char *name);

inline int R_TextureNumForName (const byte *name) { return R_TextureNumForName ((const char *)name); }
inline int R_CheckTextureNumForName (const byte *name) { return R_CheckTextureNumForName ((const char *)name); }

int R_ColormapNumForName(const char *name);             // killough 4/4/98
void R_SetDefaultColormap (const char *name);   // [RH] change normal fadetable
unsigned int R_BlendForColormap (int map);              // [RH] return calculated blend for a colormap
extern byte *realcolormaps;                                             // [RH] make the colormaps externally visible
extern size_t numfakecmaps;

int R_FindSkin (const char *name);      // [RH] Find a skin

unsigned int SlopeDiv(unsigned int num, unsigned int den);

// [RH] Tutti-Frutti fix
extern "C" unsigned int         dc_mask;

#endif