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/* Emacs style mode select -*- C++ -*-
*-----------------------------------------------------------------------------
*
*
* PrBoom: a Doom port merged with LxDoom and LSDLDoom
* based on BOOM, a modified and improved DOOM engine
* Copyright (C) 1999 by
* id Software, Chi Hoang, Lee Killough, Jim Flynn, Rand Phares, Ty Halderman
* Copyright (C) 1999-2000 by
* Jess Haas, Nicolas Kalkhof, Colin Phipps, Florian Schulze
* Copyright 2005, 2006 by
* Florian Schulze, Colin Phipps, Neil Stevens, Andrey Budko
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
*-----------------------------------------------------------------------------*/
#ifndef R_PATCH_H
#define R_PATCH_H
// Used to specify the sloping of the top and bottom of a column post
typedef enum {
RDRAW_EDGESLOPE_TOP_UP = (1<<0),
RDRAW_EDGESLOPE_TOP_DOWN = (1<<1),
RDRAW_EDGESLOPE_BOT_UP = (1<<2),
RDRAW_EDGESLOPE_BOT_DOWN = (1<<3),
RDRAW_EDGESLOPE_TOP_MASK = 0x3,
RDRAW_EDGESLOPE_BOT_MASK = 0xc,
} edgeslope_t;
typedef struct {
int topdelta;
int length;
edgeslope_t slope;
} rpost_t;
typedef struct {
int numPosts;
rpost_t *posts;
unsigned char *pixels;
} rcolumn_t;
typedef struct {
int width;
int height;
unsigned widthmask;
unsigned char isNotTileable;
int leftoffset;
int topoffset;
// this is the single malloc'ed/free'd array
// for this patch
unsigned char *data;
// these are pointers into the data array
unsigned char *pixels;
rcolumn_t *columns;
rpost_t *posts;
#ifdef TIMEDIAG
int locktic;
#endif
unsigned int locks;
} rpatch_t;
const rpatch_t *R_CachePatchNum(int id);
void R_UnlockPatchNum(int id);
#define R_CachePatchName(name) R_CachePatchNum(W_GetNumForName(name))
#define R_UnlockPatchName(name) R_UnlockPatchNum(W_GetNumForName(name))
const rpatch_t *R_CacheTextureCompositePatchNum(int id);
void R_UnlockTextureCompositePatchNum(int id);
// Size query funcs
int R_NumPatchWidth(int lump) ;
int R_NumPatchHeight(int lump);
#define R_NamePatchWidth(name) R_NumPatchWidth(W_GetNumForName(name))
#define R_NamePatchHeight(name) R_NumPatchHeight(W_GetNumForName(name))
const rcolumn_t *R_GetPatchColumnWrapped(const rpatch_t *patch, int columnIndex);
const rcolumn_t *R_GetPatchColumnClamped(const rpatch_t *patch, int columnIndex);
// returns R_GetPatchColumnWrapped for square, non-holed textures
// and R_GetPatchColumnClamped otherwise
const rcolumn_t *R_GetPatchColumn(const rpatch_t *patch, int columnIndex);
void R_InitPatches();
void R_FlushAllPatches();
#endif
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