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SRB2/src/r_textures.c

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// SONIC ROBO BLAST 2
//-----------------------------------------------------------------------------
// Copyright (C) 1993-1996 by id Software, Inc.
// Copyright (C) 1998-2000 by DooM Legacy Team.
// Copyright (C) 1999-2021 by Sonic Team Junior.
//
// This program is free software distributed under the
// terms of the GNU General Public License, version 2.
// See the 'LICENSE' file for more details.
//-----------------------------------------------------------------------------
/// \file r_textures.c
/// \brief Texture generation.
#include "doomdef.h"
#include "g_game.h"
#include "i_video.h"
#include "r_local.h"
#include "r_sky.h"
#include "p_local.h"
#include "m_misc.h"
#include "r_data.h"
#include "r_textures.h"
#include "r_patch.h"
#include "r_picformats.h"
#include "w_wad.h"
#include "z_zone.h"
#include "p_setup.h" // levelflats
#include "byteptr.h"
#include "dehacked.h"
#ifdef HWRENDER
#include "hardware/hw_glob.h" // HWR_LoadMapTextures
#endif
#include <errno.h>
//
// TEXTURE_T CACHING
// When a texture is first needed, it counts the number of composite columns
// required in the texture and allocates space for a column directory and
// any new columns.
// The directory will simply point inside other patches if there is only one
// patch in a given column, but any columns with multiple patches will have
// new column_ts generated.
//
INT32 numtextures = 0; // total number of textures found,
// size of following tables
texture_t **textures = NULL;
UINT32 **texturecolumnofs; // column offset lookup table for each texture
UINT8 **texturecache; // graphics data for each generated full-size texture
INT32 *texturewidth;
fixed_t *textureheight; // needed for texture pegging
INT32 *texturetranslation;
// Painfully simple texture id cacheing to make maps load faster. :3
static struct {
char name[9];
INT32 id;
} *tidcache = NULL;
static INT32 tidcachelen = 0;
//
// MAPTEXTURE_T CACHING
// When a texture is first needed, it counts the number of composite columns
// required in the texture and allocates space for a column directory and
// any new columns.
// The directory will simply point inside other patches if there is only one
// patch in a given column, but any columns with multiple patches will have
// new column_ts generated.
//
//
// R_DrawColumnInCache
// Clip and draw a column from a patch into a cached post.
//
static inline void R_DrawColumnInCache(column_t *patch, UINT8 *cache, texpatch_t *originPatch, INT32 cacheheight, INT32 patchheight)
{
INT32 count, position;
UINT8 *source;
INT32 topdelta, prevdelta = -1;
INT32 originy = originPatch->originy;
(void)patchheight; // This parameter is unused
while (patch->topdelta != 0xff)
{
topdelta = patch->topdelta;
if (topdelta <= prevdelta)
topdelta += prevdelta;
prevdelta = topdelta;
source = (UINT8 *)patch + 3;
count = patch->length;
position = originy + topdelta;
if (position < 0)
{
count += position;
source -= position; // start further down the column
position = 0;
}
if (position + count > cacheheight)
count = cacheheight - position;
if (count > 0)
M_Memcpy(cache + position, source, count);
patch = (column_t *)((UINT8 *)patch + patch->length + 4);
}
}
//
// R_DrawFlippedColumnInCache
// Similar to R_DrawColumnInCache; it draws the column inverted, however.
//
static inline void R_DrawFlippedColumnInCache(column_t *patch, UINT8 *cache, texpatch_t *originPatch, INT32 cacheheight, INT32 patchheight)
{
INT32 count, position;
UINT8 *source, *dest;
INT32 topdelta, prevdelta = -1;
INT32 originy = originPatch->originy;
while (patch->topdelta != 0xff)
{
topdelta = patch->topdelta;
if (topdelta <= prevdelta)
topdelta += prevdelta;
prevdelta = topdelta;
topdelta = patchheight-patch->length-topdelta;
source = (UINT8 *)patch + 2 + patch->length; // patch + 3 + (patch->length-1)
count = patch->length;
position = originy + topdelta;
if (position < 0)
{
count += position;
source += position; // start further UP the column
position = 0;
}
if (position + count > cacheheight)
count = cacheheight - position;
dest = cache + position;
if (count > 0)
{
for (; dest < cache + position + count; --source)
*dest++ = *source;
}
patch = (column_t *)((UINT8 *)patch + patch->length + 4);
}
}
//
// R_DrawBlendColumnInCache
// Draws a translucent column into the cache, applying a half-cooked equation to get a proper translucency value (Needs code in R_GenerateTexture()).
//
static inline void R_DrawBlendColumnInCache(column_t *patch, UINT8 *cache, texpatch_t *originPatch, INT32 cacheheight, INT32 patchheight)
{
INT32 count, position;
UINT8 *source, *dest;
INT32 topdelta, prevdelta = -1;
INT32 originy = originPatch->originy;
(void)patchheight; // This parameter is unused
while (patch->topdelta != 0xff)
{
topdelta = patch->topdelta;
if (topdelta <= prevdelta)
topdelta += prevdelta;
prevdelta = topdelta;
source = (UINT8 *)patch + 3;
count = patch->length;
position = originy + topdelta;
if (position < 0)
{
count += position;
source -= position; // start further down the column
position = 0;
}
if (position + count > cacheheight)
count = cacheheight - position;
dest = cache + position;
if (count > 0)
{
for (; dest < cache + position + count; source++, dest++)
if (*source != 0xFF)
*dest = ASTBlendPaletteIndexes(*dest, *source, originPatch->style, originPatch->alpha);
}
patch = (column_t *)((UINT8 *)patch + patch->length + 4);
}
}
//
// R_DrawBlendFlippedColumnInCache
// Similar to the one above except that the column is inverted.
//
static inline void R_DrawBlendFlippedColumnInCache(column_t *patch, UINT8 *cache, texpatch_t *originPatch, INT32 cacheheight, INT32 patchheight)
{
INT32 count, position;
UINT8 *source, *dest;
INT32 topdelta, prevdelta = -1;
INT32 originy = originPatch->originy;
while (patch->topdelta != 0xff)
{
topdelta = patch->topdelta;
if (topdelta <= prevdelta)
topdelta += prevdelta;
prevdelta = topdelta;
topdelta = patchheight-patch->length-topdelta;
source = (UINT8 *)patch + 2 + patch->length; // patch + 3 + (patch->length-1)
count = patch->length;
position = originy + topdelta;
if (position < 0)
{
count += position;
source += position; // start further UP the column
position = 0;
}
if (position + count > cacheheight)
count = cacheheight - position;
dest = cache + position;
if (count > 0)
{
for (; dest < cache + position + count; --source, dest++)
if (*source != 0xFF)
*dest = ASTBlendPaletteIndexes(*dest, *source, originPatch->style, originPatch->alpha);
}
patch = (column_t *)((UINT8 *)patch + patch->length + 4);
}
}
//
// R_GenerateTexture
//
// Allocate space for full size texture, either single patch or 'composite'
// Build the full textures from patches.
// The texture caching system is a little more hungry of memory, but has
// been simplified for the sake of highcolor (lol), dynamic ligthing, & speed.
//
// This is not optimised, but it's supposed to be executed only once
// per level, when enough memory is available.
//
UINT8 *R_GenerateTexture(size_t texnum)
{
UINT8 *block;
UINT8 *blocktex;
texture_t *texture;
texpatch_t *patch;
softwarepatch_t *realpatch;
UINT8 *pdata;
int x, x1, x2, i, width, height;
size_t blocksize;
column_t *patchcol;
UINT8 *colofs;
UINT16 wadnum;
lumpnum_t lumpnum;
size_t lumplength;
I_Assert(texnum <= (size_t)numtextures);
texture = textures[texnum];
I_Assert(texture != NULL);
// allocate texture column offset lookup
// single-patch textures can have holes in them and may be used on
// 2sided lines so they need to be kept in 'packed' format
// BUT this is wrong for skies and walls with over 255 pixels,
// so check if there's holes and if not strip the posts.
if (texture->patchcount == 1)
{
boolean holey = false;
patch = texture->patches;
wadnum = patch->wad;
lumpnum = patch->lump;
lumplength = W_LumpLengthPwad(wadnum, lumpnum);
pdata = W_CacheLumpNumPwad(wadnum, lumpnum, PU_CACHE);
realpatch = (softwarepatch_t *)pdata;
#ifndef NO_PNG_LUMPS
if (Picture_IsLumpPNG((UINT8 *)realpatch, lumplength))
goto multipatch;
#endif
#ifdef WALLFLATS
if (texture->type == TEXTURETYPE_FLAT)
goto multipatch;
#endif
// Check the patch for holes.
if (texture->width > SHORT(realpatch->width) || texture->height > SHORT(realpatch->height))
holey = true;
colofs = (UINT8 *)realpatch->columnofs;
for (x = 0; x < texture->width && !holey; x++)
{
column_t *col = (column_t *)((UINT8 *)realpatch + LONG(*(UINT32 *)&colofs[x<<2]));
INT32 topdelta, prevdelta = -1, y = 0;
while (col->topdelta != 0xff)
{
topdelta = col->topdelta;
if (topdelta <= prevdelta)
topdelta += prevdelta;
prevdelta = topdelta;
if (topdelta > y)
break;
y = topdelta + col->length + 1;
col = (column_t *)((UINT8 *)col + col->length + 4);
}
if (y < texture->height)
holey = true; // this texture is HOLEy! D:
}
// If the patch uses transparency, we have to save it this way.
if (holey)
{
texture->holes = true;
texture->flip = patch->flip;
blocksize = lumplength;
block = Z_Calloc(blocksize, PU_STATIC, // will change tag at end of this function
&texturecache[texnum]);
M_Memcpy(block, realpatch, blocksize);
texturememory += blocksize;
// use the patch's column lookup
colofs = (block + 8);
texturecolumnofs[texnum] = (UINT32 *)colofs;
blocktex = block;
if (patch->flip & 1) // flip the patch horizontally
{
UINT8 *realcolofs = (UINT8 *)realpatch->columnofs;
for (x = 0; x < texture->width; x++)
*(UINT32 *)&colofs[x<<2] = realcolofs[( texture->width-1-x )<<2]; // swap with the offset of the other side of the texture
}
// we can't as easily flip the patch vertically sadly though,
// we have wait until the texture itself is drawn to do that
for (x = 0; x < texture->width; x++)
*(UINT32 *)&colofs[x<<2] = LONG(LONG(*(UINT32 *)&colofs[x<<2]) + 3);
goto done;
}
// Otherwise, do multipatch format.
}
// multi-patch textures (or 'composite')
multipatch:
texture->holes = false;
texture->flip = 0;
blocksize = (texture->width * 4) + (texture->width * texture->height);
texturememory += blocksize;
block = Z_Malloc(blocksize+1, PU_STATIC, &texturecache[texnum]);
memset(block, TRANSPARENTPIXEL, blocksize+1); // Transparency hack
// columns lookup table
colofs = block;
texturecolumnofs[texnum] = (UINT32 *)colofs;
// texture data after the lookup table
blocktex = block + (texture->width*4);
// Composite the columns together.
for (i = 0, patch = texture->patches; i < texture->patchcount; i++, patch++)
{
boolean dealloc = true;
static void (*ColumnDrawerPointer)(column_t *, UINT8 *, texpatch_t *, INT32, INT32); // Column drawing function pointer.
if (patch->style != AST_COPY)
ColumnDrawerPointer = (patch->flip & 2) ? R_DrawBlendFlippedColumnInCache : R_DrawBlendColumnInCache;
else
ColumnDrawerPointer = (patch->flip & 2) ? R_DrawFlippedColumnInCache : R_DrawColumnInCache;
wadnum = patch->wad;
lumpnum = patch->lump;
pdata = W_CacheLumpNumPwad(wadnum, lumpnum, PU_CACHE);
lumplength = W_LumpLengthPwad(wadnum, lumpnum);
realpatch = (softwarepatch_t *)pdata;
dealloc = true;
#ifndef NO_PNG_LUMPS
if (Picture_IsLumpPNG((UINT8 *)realpatch, lumplength))
realpatch = (softwarepatch_t *)Picture_PNGConvert((UINT8 *)realpatch, PICFMT_DOOMPATCH, NULL, NULL, NULL, NULL, lumplength, NULL, 0);
else
#endif
#ifdef WALLFLATS
if (texture->type == TEXTURETYPE_FLAT)
realpatch = (softwarepatch_t *)Picture_Convert(PICFMT_FLAT, pdata, PICFMT_DOOMPATCH, 0, NULL, texture->width, texture->height, 0, 0, 0);
else
#endif
{
(void)lumplength;
dealloc = false;
}
x1 = patch->originx;
width = SHORT(realpatch->width);
height = SHORT(realpatch->height);
x2 = x1 + width;
if (x1 > texture->width || x2 < 0)
{
if (dealloc)
Z_Free(realpatch);
continue; // patch not located within texture's x bounds, ignore
}
if (patch->originy > texture->height || (patch->originy + height) < 0)
{
if (dealloc)
Z_Free(realpatch);
continue; // patch not located within texture's y bounds, ignore
}
// patch is actually inside the texture!
// now check if texture is partly off-screen and adjust accordingly
// left edge
if (x1 < 0)
x = 0;
else
x = x1;
// right edge
if (x2 > texture->width)
x2 = texture->width;
for (; x < x2; x++)
{
if (patch->flip & 1)
patchcol = (column_t *)((UINT8 *)realpatch + LONG(realpatch->columnofs[(x1+width-1)-x]));
else
patchcol = (column_t *)((UINT8 *)realpatch + LONG(realpatch->columnofs[x-x1]));
// generate column ofset lookup
*(UINT32 *)&colofs[x<<2] = LONG((x * texture->height) + (texture->width*4));
ColumnDrawerPointer(patchcol, block + LONG(*(UINT32 *)&colofs[x<<2]), patch, texture->height, height);
}
if (dealloc)
Z_Free(realpatch);
}
done:
// Now that the texture has been built in column cache, it is purgable from zone memory.
Z_ChangeTag(block, PU_CACHE);
return blocktex;
}
//
// R_GenerateTextureAsFlat
//
// Generates a flat picture for a texture.
//
UINT8 *R_GenerateTextureAsFlat(size_t texnum)
{
texture_t *texture = textures[texnum];
UINT8 *converted = NULL;
size_t size = (texture->width * texture->height);
// The flat picture for this texture was not generated yet.
if (!texture->flat)
{
// Well, let's do it now, then.
texture->flat = Z_Malloc(size, PU_STATIC, NULL);
// Picture_TextureToFlat handles everything for us.
converted = (UINT8 *)Picture_TextureToFlat(texnum);
M_Memcpy(texture->flat, converted, size);
Z_Free(converted);
}
return texture->flat;
}
//
// R_GetTextureNum
//
// Returns the actual texture id that we should use.
// This can either be texnum, the current frame for texnum's anim (if animated),
// or 0 if not valid.
//
INT32 R_GetTextureNum(INT32 texnum)
{
if (texnum < 0 || texnum >= numtextures)
return 0;
return texturetranslation[texnum];
}
//
// R_CheckTextureCache
//
// Use this if you need to make sure the texture is cached before R_GetColumn calls
// e.g.: midtextures and FOF walls
//
void R_CheckTextureCache(INT32 tex)
{
if (!texturecache[tex])
R_GenerateTexture(tex);
}
//
// R_GetColumn
//
UINT8 *R_GetColumn(fixed_t tex, INT32 col)
{
UINT8 *data;
INT32 width = texturewidth[tex];
if (width & (width - 1))
col = (UINT32)col % width;
else
col &= (width - 1);
data = texturecache[tex];
if (!data)
data = R_GenerateTexture(tex);
return data + LONG(texturecolumnofs[tex][col]);
}
void *R_GetFlat(lumpnum_t flatlumpnum)
{
return W_CacheLumpNum(flatlumpnum, PU_CACHE);
}
//
// R_GetLevelFlat
//
// If needed, convert a texture or patch to a flat.
//
void *R_GetLevelFlat(levelflat_t *levelflat)
{
boolean isleveltexture = (levelflat->type == LEVELFLAT_TEXTURE);
texture_t *texture = (isleveltexture ? textures[levelflat->u.texture.num] : NULL);
boolean texturechanged = (isleveltexture ? (levelflat->u.texture.num != levelflat->u.texture.lastnum) : false);
UINT8 *flatdata = NULL;
// Check if the texture changed.
if (isleveltexture && (!texturechanged))
{
if (texture->flat)
{
flatdata = texture->flat;
ds_flatwidth = texture->width;
ds_flatheight = texture->height;
texturechanged = false;
}
else
texturechanged = true;
}
// If the texture changed, or the flat wasn't generated, convert.
if (levelflat->picture == NULL || texturechanged)
{
// Level texture
if (isleveltexture)
{
levelflat->picture = R_GenerateTextureAsFlat(levelflat->u.texture.num);
ds_flatwidth = levelflat->width = texture->width;
ds_flatheight = levelflat->height = texture->height;
}
else
{
#ifndef NO_PNG_LUMPS
if (levelflat->type == LEVELFLAT_PNG)
{
INT32 pngwidth, pngheight;
levelflat->picture = Picture_PNGConvert(W_CacheLumpNum(levelflat->u.flat.lumpnum, PU_CACHE), PICFMT_FLAT, &pngwidth, &pngheight, NULL, NULL, W_LumpLength(levelflat->u.flat.lumpnum), NULL, 0);
levelflat->width = (UINT16)pngwidth;
levelflat->height = (UINT16)pngheight;
ds_flatwidth = levelflat->width;
ds_flatheight = levelflat->height;
}
else
#endif
if (levelflat->type == LEVELFLAT_PATCH)
{
UINT8 *converted;
size_t size;
softwarepatch_t *patch = W_CacheLumpNum(levelflat->u.flat.lumpnum, PU_CACHE);
levelflat->width = ds_flatwidth = SHORT(patch->width);
levelflat->height = ds_flatheight = SHORT(patch->height);
levelflat->picture = Z_Malloc(levelflat->width * levelflat->height, PU_LEVEL, NULL);
converted = Picture_FlatConvert(PICFMT_DOOMPATCH, patch, PICFMT_FLAT, 0, &size, levelflat->width, levelflat->height, SHORT(patch->topoffset), SHORT(patch->leftoffset), 0);
M_Memcpy(levelflat->picture, converted, size);
Z_Free(converted);
}
}
}
else
{
ds_flatwidth = levelflat->width;
ds_flatheight = levelflat->height;
}
levelflat->u.texture.lastnum = levelflat->u.texture.num;
if (flatdata == NULL)
flatdata = levelflat->picture;
return flatdata;
}
//
// R_CheckPowersOfTwo
//
// Sets ds_powersoftwo true if the flat's dimensions are powers of two, and returns that.
//
boolean R_CheckPowersOfTwo(void)
{
boolean wpow2 = (!(ds_flatwidth & (ds_flatwidth - 1)));
boolean hpow2 = (!(ds_flatheight & (ds_flatheight - 1)));
// Initially, the flat isn't powers-of-two-sized.
ds_powersoftwo = false;
// But if the width and height are powers of two,
// and are EQUAL, then it's okay :]
if ((ds_flatwidth == ds_flatheight) && (wpow2 && hpow2))
ds_powersoftwo = true;
// Just return ds_powersoftwo.
return ds_powersoftwo;
}
//
// R_CheckFlatLength
//
// Determine the flat's dimensions from its lump length.
//
void R_CheckFlatLength(size_t size)
{
switch (size)
{
case 4194304: // 2048x2048 lump
nflatmask = 0x3FF800;
nflatxshift = 21;
nflatyshift = 10;
nflatshiftup = 5;
ds_flatwidth = ds_flatheight = 2048;
break;
case 1048576: // 1024x1024 lump
nflatmask = 0xFFC00;
nflatxshift = 22;
nflatyshift = 12;
nflatshiftup = 6;
ds_flatwidth = ds_flatheight = 1024;
break;
case 262144:// 512x512 lump
nflatmask = 0x3FE00;
nflatxshift = 23;
nflatyshift = 14;
nflatshiftup = 7;
ds_flatwidth = ds_flatheight = 512;
break;
case 65536: // 256x256 lump
nflatmask = 0xFF00;
nflatxshift = 24;
nflatyshift = 16;
nflatshiftup = 8;
ds_flatwidth = ds_flatheight = 256;
break;
case 16384: // 128x128 lump
nflatmask = 0x3F80;
nflatxshift = 25;
nflatyshift = 18;
nflatshiftup = 9;
ds_flatwidth = ds_flatheight = 128;
break;
case 1024: // 32x32 lump
nflatmask = 0x3E0;
nflatxshift = 27;
nflatyshift = 22;
nflatshiftup = 11;
ds_flatwidth = ds_flatheight = 32;
break;
default: // 64x64 lump
nflatmask = 0xFC0;
nflatxshift = 26;
nflatyshift = 20;
nflatshiftup = 10;
ds_flatwidth = ds_flatheight = 64;
break;
}
}
//
// Empty the texture cache (used for load wad at runtime)
//
void R_FlushTextureCache(void)
{
INT32 i;
if (numtextures)
for (i = 0; i < numtextures; i++)
Z_Free(texturecache[i]);
}
// Need these prototypes for later; defining them here instead of r_textures.h so they're "private"
int R_CountTexturesInTEXTURESLump(UINT16 wadNum, UINT16 lumpNum);
void R_ParseTEXTURESLump(UINT16 wadNum, UINT16 lumpNum, INT32 *index);
#ifdef WALLFLATS
static INT32
Rloadflats (INT32 i, INT32 w)
{
UINT16 j;
UINT16 texstart, texend;
texture_t *texture;
texpatch_t *patch;
// Yes
if (wadfiles[w]->type == RET_PK3)
{
texstart = W_CheckNumForFolderStartPK3("flats/", (UINT16)w, 0);
texend = W_CheckNumForFolderEndPK3("flats/", (UINT16)w, texstart);
}
else
{
texstart = W_CheckNumForMarkerStartPwad("F_START", (UINT16)w, 0);
texend = W_CheckNumForNamePwad("F_END", (UINT16)w, texstart);
}
if (!( texstart == INT16_MAX || texend == INT16_MAX ))
{
// Work through each lump between the markers in the WAD.
for (j = 0; j < (texend - texstart); j++)
{
UINT8 *flatlump;
UINT16 wadnum = (UINT16)w;
lumpnum_t lumpnum = texstart + j;
size_t lumplength;
size_t flatsize = 0;
if (wadfiles[w]->type == RET_PK3)
{
if (W_IsLumpFolder(wadnum, lumpnum)) // Check if lump is a folder
continue; // If it is then SKIP IT
}
flatlump = W_CacheLumpNumPwad(wadnum, lumpnum, PU_CACHE);
lumplength = W_LumpLengthPwad(wadnum, lumpnum);
switch (lumplength)
{
case 4194304: // 2048x2048 lump
flatsize = 2048;
break;
case 1048576: // 1024x1024 lump
flatsize = 1024;
break;
case 262144:// 512x512 lump
flatsize = 512;
break;
case 65536: // 256x256 lump
flatsize = 256;
break;
case 16384: // 128x128 lump
flatsize = 128;
break;
case 1024: // 32x32 lump
flatsize = 32;
break;
default: // 64x64 lump
flatsize = 64;
break;
}
//CONS_Printf("\n\"%s\" is a flat, dimensions %d x %d",W_CheckNameForNumPwad((UINT16)w,texstart+j),flatsize,flatsize);
texture = textures[i] = Z_Calloc(sizeof(texture_t) + sizeof(texpatch_t), PU_STATIC, NULL);
// Set texture properties.
M_Memcpy(texture->name, W_CheckNameForNumPwad(wadnum, lumpnum), sizeof(texture->name));
#ifndef NO_PNG_LUMPS
if (Picture_IsLumpPNG((UINT8 *)flatlump, lumplength))
{
INT32 width, height;
Picture_PNGDimensions((UINT8 *)flatlump, &width, &height, NULL, NULL, lumplength);
texture->width = (INT16)width;
texture->height = (INT16)height;
}
else
#endif
texture->width = texture->height = flatsize;
texture->type = TEXTURETYPE_FLAT;
texture->patchcount = 1;
texture->holes = false;
texture->flip = 0;
// Allocate information for the texture's patches.
patch = &texture->patches[0];
patch->originx = patch->originy = 0;
patch->wad = (UINT16)w;
patch->lump = texstart + j;
patch->flip = 0;
Z_Unlock(flatlump);
texturewidth[i] = texture->width;
textureheight[i] = texture->height << FRACBITS;
i++;
}
}
return i;
}
#endif/*WALLFLATS*/
#define TX_START "TX_START"
#define TX_END "TX_END"
static INT32
Rloadtextures (INT32 i, INT32 w)
{
UINT16 j;
UINT16 texstart, texend, texturesLumpPos;
texture_t *texture;
softwarepatch_t *patchlump;
texpatch_t *patch;
// Get the lump numbers for the markers in the WAD, if they exist.
if (wadfiles[w]->type == RET_PK3)
{
texstart = W_CheckNumForFolderStartPK3("textures/", (UINT16)w, 0);
texend = W_CheckNumForFolderEndPK3("textures/", (UINT16)w, texstart);
texturesLumpPos = W_CheckNumForNamePwad("TEXTURES", (UINT16)w, 0);
while (texturesLumpPos != INT16_MAX)
{
R_ParseTEXTURESLump(w, texturesLumpPos, &i);
texturesLumpPos = W_CheckNumForNamePwad("TEXTURES", (UINT16)w, texturesLumpPos + 1);
}
}
else
{
texstart = W_CheckNumForMarkerStartPwad(TX_START, (UINT16)w, 0);
texend = W_CheckNumForNamePwad(TX_END, (UINT16)w, 0);
texturesLumpPos = W_CheckNumForNamePwad("TEXTURES", (UINT16)w, 0);
if (texturesLumpPos != INT16_MAX)
R_ParseTEXTURESLump(w, texturesLumpPos, &i);
}
if (!( texstart == INT16_MAX || texend == INT16_MAX ))
{
// Work through each lump between the markers in the WAD.
for (j = 0; j < (texend - texstart); j++)
{
UINT16 wadnum = (UINT16)w;
lumpnum_t lumpnum = texstart + j;
#ifndef NO_PNG_LUMPS
size_t lumplength;
#endif
if (wadfiles[w]->type == RET_PK3)
{
if (W_IsLumpFolder(wadnum, lumpnum)) // Check if lump is a folder
continue; // If it is then SKIP IT
}
patchlump = W_CacheLumpNumPwad(wadnum, lumpnum, PU_CACHE);
#ifndef NO_PNG_LUMPS
lumplength = W_LumpLengthPwad(wadnum, lumpnum);
#endif
//CONS_Printf("\n\"%s\" is a single patch, dimensions %d x %d",W_CheckNameForNumPwad((UINT16)w,texstart+j),patchlump->width, patchlump->height);
texture = textures[i] = Z_Calloc(sizeof(texture_t) + sizeof(texpatch_t), PU_STATIC, NULL);
// Set texture properties.
M_Memcpy(texture->name, W_CheckNameForNumPwad(wadnum, lumpnum), sizeof(texture->name));
#ifndef NO_PNG_LUMPS
if (Picture_IsLumpPNG((UINT8 *)patchlump, lumplength))
{
INT32 width, height;
Picture_PNGDimensions((UINT8 *)patchlump, &width, &height, NULL, NULL, lumplength);
texture->width = (INT16)width;
texture->height = (INT16)height;
}
else
#endif
{
texture->width = SHORT(patchlump->width);
texture->height = SHORT(patchlump->height);
}
texture->type = TEXTURETYPE_SINGLEPATCH;
texture->patchcount = 1;
texture->holes = false;
texture->flip = 0;
// Allocate information for the texture's patches.
patch = &texture->patches[0];
patch->originx = patch->originy = 0;
patch->wad = (UINT16)w;
patch->lump = texstart + j;
patch->flip = 0;
Z_Unlock(patchlump);
texturewidth[i] = texture->width;
textureheight[i] = texture->height << FRACBITS;
i++;
}
}
return i;
}
//
// R_LoadTextures
// Initializes the texture list with the textures from the world map.
//
void R_LoadTextures(void)
{
INT32 i, w;
UINT16 j;
UINT16 texstart, texend, texturesLumpPos;
// Free previous memory before numtextures change.
if (numtextures)
{
for (i = 0; i < numtextures; i++)
{
Z_Free(textures[i]);
Z_Free(texturecache[i]);
}
Z_Free(texturetranslation);
Z_Free(textures);
}
// Load patches and textures.
// Get the number of textures to check.
// NOTE: Make SURE the system does not process
// the markers.
// This system will allocate memory for all duplicate/patched textures even if it never uses them,
// but the alternative is to spend a ton of time checking and re-checking all previous entries just to skip any potentially patched textures.
for (w = 0, numtextures = 0; w < numwadfiles; w++)
{
#ifdef WALLFLATS
// Count flats
if (wadfiles[w]->type == RET_PK3)
{
texstart = W_CheckNumForFolderStartPK3("flats/", (UINT16)w, 0);
texend = W_CheckNumForFolderEndPK3("flats/", (UINT16)w, texstart);
}
else
{
texstart = W_CheckNumForMarkerStartPwad("F_START", (UINT16)w, 0);
texend = W_CheckNumForNamePwad("F_END", (UINT16)w, texstart);
}
if (!( texstart == INT16_MAX || texend == INT16_MAX ))
{
// PK3s have subfolders, so we can't just make a simple sum
if (wadfiles[w]->type == RET_PK3)
{
for (j = texstart; j < texend; j++)
{
if (!W_IsLumpFolder((UINT16)w, j)) // Check if lump is a folder; if not, then count it
numtextures++;
}
}
else // Add all the textures between F_START and F_END
{
numtextures += (UINT32)(texend - texstart);
}
}
#endif/*WALLFLATS*/
// Count the textures from TEXTURES lumps
texturesLumpPos = W_CheckNumForNamePwad("TEXTURES", (UINT16)w, 0);
while (texturesLumpPos != INT16_MAX)
{
numtextures += R_CountTexturesInTEXTURESLump((UINT16)w, (UINT16)texturesLumpPos);
texturesLumpPos = W_CheckNumForNamePwad("TEXTURES", (UINT16)w, texturesLumpPos + 1);
}
// Count single-patch textures
if (wadfiles[w]->type == RET_PK3)
{
texstart = W_CheckNumForFolderStartPK3("textures/", (UINT16)w, 0);
texend = W_CheckNumForFolderEndPK3("textures/", (UINT16)w, texstart);
}
else
{
texstart = W_CheckNumForMarkerStartPwad(TX_START, (UINT16)w, 0);
texend = W_CheckNumForNamePwad(TX_END, (UINT16)w, 0);
}
if (texstart == INT16_MAX || texend == INT16_MAX)
continue;
// PK3s have subfolders, so we can't just make a simple sum
if (wadfiles[w]->type == RET_PK3)
{
for (j = texstart; j < texend; j++)
{
if (!W_IsLumpFolder((UINT16)w, j)) // Check if lump is a folder; if not, then count it
numtextures++;
}
}
else // Add all the textures between TX_START and TX_END
{
numtextures += (UINT32)(texend - texstart);
}
}
// If no textures found by this point, bomb out
if (!numtextures)
I_Error("No textures detected in any WADs!\n");
// Allocate memory and initialize to 0 for all the textures we are initialising.
// There are actually 5 buffers allocated in one for convenience.
textures = Z_Calloc((numtextures * sizeof(void *)) * 5, PU_STATIC, NULL);
// Allocate texture column offset table.
texturecolumnofs = (void *)((UINT8 *)textures + (numtextures * sizeof(void *)));
// Allocate texture referencing cache.
texturecache = (void *)((UINT8 *)textures + ((numtextures * sizeof(void *)) * 2));
// Allocate texture width table.
texturewidth = (void *)((UINT8 *)textures + ((numtextures * sizeof(void *)) * 3));
// Allocate texture height table.
textureheight = (void *)((UINT8 *)textures + ((numtextures * sizeof(void *)) * 4));
// Create translation table for global animation.
texturetranslation = Z_Malloc((numtextures + 1) * sizeof(*texturetranslation), PU_STATIC, NULL);
for (i = 0; i < numtextures; i++)
texturetranslation[i] = i;
for (i = 0, w = 0; w < numwadfiles; w++)
{
#ifdef WALLFLATS
i = Rloadflats(i, w);
#endif
i = Rloadtextures(i, w);
}
#ifdef HWRENDER
if (rendermode == render_opengl)
HWR_LoadMapTextures(numtextures);
#endif
}
static texpatch_t *R_ParsePatch(boolean actuallyLoadPatch)
{
char *texturesToken;
size_t texturesTokenLength;
char *endPos;
char *patchName = NULL;
INT16 patchXPos;
INT16 patchYPos;
UINT8 flip = 0;
UINT8 alpha = 255;
enum patchalphastyle style = AST_COPY;
texpatch_t *resultPatch = NULL;
lumpnum_t patchLumpNum;
// Patch identifier
texturesToken = M_GetToken(NULL);
if (texturesToken == NULL)
{
I_Error("Error parsing TEXTURES lump: Unexpected end of file where patch name should be");
}
texturesTokenLength = strlen(texturesToken);
if (texturesTokenLength>8)
{
I_Error("Error parsing TEXTURES lump: Patch name \"%s\" exceeds 8 characters",texturesToken);
}
else
{
if (patchName != NULL)
{
Z_Free(patchName);
}
patchName = (char *)Z_Malloc((texturesTokenLength+1)*sizeof(char),PU_STATIC,NULL);
M_Memcpy(patchName,texturesToken,texturesTokenLength*sizeof(char));
patchName[texturesTokenLength] = '\0';
}
// Comma 1
Z_Free(texturesToken);
texturesToken = M_GetToken(NULL);
if (texturesToken == NULL)
{
I_Error("Error parsing TEXTURES lump: Unexpected end of file where comma after \"%s\"'s patch name should be",patchName);
}
if (strcmp(texturesToken,",")!=0)
{
I_Error("Error parsing TEXTURES lump: Expected \",\" after %s's patch name, got \"%s\"",patchName,texturesToken);
}
// XPos
Z_Free(texturesToken);
texturesToken = M_GetToken(NULL);
if (texturesToken == NULL)
{
I_Error("Error parsing TEXTURES lump: Unexpected end of file where patch \"%s\"'s x coordinate should be",patchName);
}
endPos = NULL;
#ifndef AVOID_ERRNO
errno = 0;
#endif
patchXPos = strtol(texturesToken,&endPos,10);
(void)patchXPos; //unused for now
if (endPos == texturesToken // Empty string
|| *endPos != '\0' // Not end of string
#ifndef AVOID_ERRNO
|| errno == ERANGE // Number out-of-range
#endif
)
{
I_Error("Error parsing TEXTURES lump: Expected an integer for patch \"%s\"'s x coordinate, got \"%s\"",patchName,texturesToken);
}
// Comma 2
Z_Free(texturesToken);
texturesToken = M_GetToken(NULL);
if (texturesToken == NULL)
{
I_Error("Error parsing TEXTURES lump: Unexpected end of file where comma after patch \"%s\"'s x coordinate should be",patchName);
}
if (strcmp(texturesToken,",")!=0)
{
I_Error("Error parsing TEXTURES lump: Expected \",\" after patch \"%s\"'s x coordinate, got \"%s\"",patchName,texturesToken);
}
// YPos
Z_Free(texturesToken);
texturesToken = M_GetToken(NULL);
if (texturesToken == NULL)
{
I_Error("Error parsing TEXTURES lump: Unexpected end of file where patch \"%s\"'s y coordinate should be",patchName);
}
endPos = NULL;
#ifndef AVOID_ERRNO
errno = 0;
#endif
patchYPos = strtol(texturesToken,&endPos,10);
(void)patchYPos; //unused for now
if (endPos == texturesToken // Empty string
|| *endPos != '\0' // Not end of string
#ifndef AVOID_ERRNO
|| errno == ERANGE // Number out-of-range
#endif
)
{
I_Error("Error parsing TEXTURES lump: Expected an integer for patch \"%s\"'s y coordinate, got \"%s\"",patchName,texturesToken);
}
Z_Free(texturesToken);
// Patch parameters block (OPTIONAL)
// added by Monster Iestyn (22/10/16)
// Left Curly Brace
texturesToken = M_GetToken(NULL);
if (texturesToken == NULL)
; // move on and ignore, R_ParseTextures will deal with this
else
{
if (strcmp(texturesToken,"{")==0)
{
Z_Free(texturesToken);
texturesToken = M_GetToken(NULL);
if (texturesToken == NULL)
{
I_Error("Error parsing TEXTURES lump: Unexpected end of file where patch \"%s\"'s parameters should be",patchName);
}
while (strcmp(texturesToken,"}")!=0)
{
if (stricmp(texturesToken, "ALPHA")==0)
{
Z_Free(texturesToken);
texturesToken = M_GetToken(NULL);
alpha = 255*strtof(texturesToken, NULL);
}
else if (stricmp(texturesToken, "STYLE")==0)
{
Z_Free(texturesToken);
texturesToken = M_GetToken(NULL);
if (stricmp(texturesToken, "TRANSLUCENT")==0)
style = AST_TRANSLUCENT;
else if (stricmp(texturesToken, "ADD")==0)
style = AST_ADD;
else if (stricmp(texturesToken, "SUBTRACT")==0)
style = AST_SUBTRACT;
else if (stricmp(texturesToken, "REVERSESUBTRACT")==0)
style = AST_REVERSESUBTRACT;
else if (stricmp(texturesToken, "MODULATE")==0)
style = AST_MODULATE;
}
else if (stricmp(texturesToken, "FLIPX")==0)
flip |= 1;
else if (stricmp(texturesToken, "FLIPY")==0)
flip |= 2;
Z_Free(texturesToken);
texturesToken = M_GetToken(NULL);
if (texturesToken == NULL)
{
I_Error("Error parsing TEXTURES lump: Unexpected end of file where patch \"%s\"'s parameters or right curly brace should be",patchName);
}
}
}
else
{
// this is not what we wanted...
// undo last read so R_ParseTextures can re-get the token for its own purposes
M_UnGetToken();
}
Z_Free(texturesToken);
}
if (actuallyLoadPatch == true)
{
// Check lump exists
patchLumpNum = W_GetNumForName(patchName);
// If so, allocate memory for texpatch_t and fill 'er up
resultPatch = (texpatch_t *)Z_Malloc(sizeof(texpatch_t),PU_STATIC,NULL);
resultPatch->originx = patchXPos;
resultPatch->originy = patchYPos;
resultPatch->lump = patchLumpNum & 65535;
resultPatch->wad = patchLumpNum>>16;
resultPatch->flip = flip;
resultPatch->alpha = alpha;
resultPatch->style = style;
// Clean up a little after ourselves
Z_Free(patchName);
// Then return it
return resultPatch;
}
else
{
Z_Free(patchName);
return NULL;
}
}
static texture_t *R_ParseTexture(boolean actuallyLoadTexture)
{
char *texturesToken;
size_t texturesTokenLength;
char *endPos;
INT32 newTextureWidth;
INT32 newTextureHeight;
texture_t *resultTexture = NULL;
texpatch_t *newPatch;
char newTextureName[9]; // no longer dynamically allocated
// Texture name
texturesToken = M_GetToken(NULL);
if (texturesToken == NULL)
{
I_Error("Error parsing TEXTURES lump: Unexpected end of file where texture name should be");
}
texturesTokenLength = strlen(texturesToken);
if (texturesTokenLength>8)
{
I_Error("Error parsing TEXTURES lump: Texture name \"%s\" exceeds 8 characters",texturesToken);
}
else
{
memset(&newTextureName, 0, 9);
M_Memcpy(newTextureName, texturesToken, texturesTokenLength);
// ^^ we've confirmed that the token is <= 8 characters so it will never overflow a 9 byte char buffer
strupr(newTextureName); // Just do this now so we don't have to worry about it
}
Z_Free(texturesToken);
// Comma 1
texturesToken = M_GetToken(NULL);
if (texturesToken == NULL)
{
I_Error("Error parsing TEXTURES lump: Unexpected end of file where comma after texture \"%s\"'s name should be",newTextureName);
}
else if (strcmp(texturesToken,",")!=0)
{
I_Error("Error parsing TEXTURES lump: Expected \",\" after texture \"%s\"'s name, got \"%s\"",newTextureName,texturesToken);
}
Z_Free(texturesToken);
// Width
texturesToken = M_GetToken(NULL);
if (texturesToken == NULL)
{
I_Error("Error parsing TEXTURES lump: Unexpected end of file where texture \"%s\"'s width should be",newTextureName);
}
endPos = NULL;
#ifndef AVOID_ERRNO
errno = 0;
#endif
newTextureWidth = strtol(texturesToken,&endPos,10);
if (endPos == texturesToken // Empty string
|| *endPos != '\0' // Not end of string
#ifndef AVOID_ERRNO
|| errno == ERANGE // Number out-of-range
#endif
|| newTextureWidth < 0) // Number is not positive
{
I_Error("Error parsing TEXTURES lump: Expected a positive integer for texture \"%s\"'s width, got \"%s\"",newTextureName,texturesToken);
}
Z_Free(texturesToken);
// Comma 2
texturesToken = M_GetToken(NULL);
if (texturesToken == NULL)
{
I_Error("Error parsing TEXTURES lump: Unexpected end of file where comma after texture \"%s\"'s width should be",newTextureName);
}
if (strcmp(texturesToken,",")!=0)
{
I_Error("Error parsing TEXTURES lump: Expected \",\" after texture \"%s\"'s width, got \"%s\"",newTextureName,texturesToken);
}
Z_Free(texturesToken);
// Height
texturesToken = M_GetToken(NULL);
if (texturesToken == NULL)
{
I_Error("Error parsing TEXTURES lump: Unexpected end of file where texture \"%s\"'s height should be",newTextureName);
}
endPos = NULL;
#ifndef AVOID_ERRNO
errno = 0;
#endif
newTextureHeight = strtol(texturesToken,&endPos,10);
if (endPos == texturesToken // Empty string
|| *endPos != '\0' // Not end of string
#ifndef AVOID_ERRNO
|| errno == ERANGE // Number out-of-range
#endif
|| newTextureHeight < 0) // Number is not positive
{
I_Error("Error parsing TEXTURES lump: Expected a positive integer for texture \"%s\"'s height, got \"%s\"",newTextureName,texturesToken);
}
Z_Free(texturesToken);
// Left Curly Brace
texturesToken = M_GetToken(NULL);
if (texturesToken == NULL)
{
I_Error("Error parsing TEXTURES lump: Unexpected end of file where open curly brace for texture \"%s\" should be",newTextureName);
}
if (strcmp(texturesToken,"{")==0)
{
if (actuallyLoadTexture)
{
// Allocate memory for a zero-patch texture. Obviously, we'll be adding patches momentarily.
resultTexture = (texture_t *)Z_Calloc(sizeof(texture_t),PU_STATIC,NULL);
M_Memcpy(resultTexture->name, newTextureName, 8);
resultTexture->width = newTextureWidth;
resultTexture->height = newTextureHeight;
resultTexture->type = TEXTURETYPE_COMPOSITE;
}
Z_Free(texturesToken);
texturesToken = M_GetToken(NULL);
if (texturesToken == NULL)
{
I_Error("Error parsing TEXTURES lump: Unexpected end of file where patch definition for texture \"%s\" should be",newTextureName);
}
while (strcmp(texturesToken,"}")!=0)
{
if (stricmp(texturesToken, "PATCH")==0)
{
Z_Free(texturesToken);
if (resultTexture)
{
// Get that new patch
newPatch = R_ParsePatch(true);
// Make room for the new patch
resultTexture = Z_Realloc(resultTexture, sizeof(texture_t) + (resultTexture->patchcount+1)*sizeof(texpatch_t), PU_STATIC, NULL);
// Populate the uninitialized values in the new patch entry of our array
M_Memcpy(&resultTexture->patches[resultTexture->patchcount], newPatch, sizeof(texpatch_t));
// Account for the new number of patches in the texture
resultTexture->patchcount++;
// Then free up the memory assigned to R_ParsePatch, as it's unneeded now
Z_Free(newPatch);
}
else
{
R_ParsePatch(false);
}
}
else
{
I_Error("Error parsing TEXTURES lump: Expected \"PATCH\" in texture \"%s\", got \"%s\"",newTextureName,texturesToken);
}
texturesToken = M_GetToken(NULL);
if (texturesToken == NULL)
{
I_Error("Error parsing TEXTURES lump: Unexpected end of file where patch declaration or right curly brace for texture \"%s\" should be",newTextureName);
}
}
if (resultTexture && resultTexture->patchcount == 0)
{
I_Error("Error parsing TEXTURES lump: Texture \"%s\" must have at least one patch",newTextureName);
}
}
else
{
I_Error("Error parsing TEXTURES lump: Expected \"{\" for texture \"%s\", got \"%s\"",newTextureName,texturesToken);
}
Z_Free(texturesToken);
if (actuallyLoadTexture) return resultTexture;
else return NULL;
}
// Parses the TEXTURES lump... but just to count the number of textures.
int R_CountTexturesInTEXTURESLump(UINT16 wadNum, UINT16 lumpNum)
{
char *texturesLump;
size_t texturesLumpLength;
char *texturesText;
UINT32 numTexturesInLump = 0;
char *texturesToken;
// Since lumps AREN'T \0-terminated like I'd assumed they should be, I'll
// need to make a space of memory where I can ensure that it will terminate
// correctly. Start by loading the relevant data from the WAD.
texturesLump = (char *)W_CacheLumpNumPwad(wadNum, lumpNum, PU_STATIC);
// If that didn't exist, we have nothing to do here.
if (texturesLump == NULL) return 0;
// If we're still here, then it DOES exist; figure out how long it is, and allot memory accordingly.
texturesLumpLength = W_LumpLengthPwad(wadNum, lumpNum);
texturesText = (char *)Z_Malloc((texturesLumpLength+1)*sizeof(char),PU_STATIC,NULL);
// Now move the contents of the lump into this new location.
memmove(texturesText,texturesLump,texturesLumpLength);
// Make damn well sure the last character in our new memory location is \0.
texturesText[texturesLumpLength] = '\0';
// Finally, free up the memory from the first data load, because we really
// don't need it.
Z_Free(texturesLump);
texturesToken = M_GetToken(texturesText);
while (texturesToken != NULL)
{
if (stricmp(texturesToken, "WALLTEXTURE") == 0 || stricmp(texturesToken, "TEXTURE") == 0)
{
numTexturesInLump++;
Z_Free(texturesToken);
R_ParseTexture(false);
}
else
{
I_Error("Error parsing TEXTURES lump: Expected \"WALLTEXTURE\" or \"TEXTURE\", got \"%s\"",texturesToken);
}
texturesToken = M_GetToken(NULL);
}
Z_Free(texturesToken);
Z_Free((void *)texturesText);
return numTexturesInLump;
}
// Parses the TEXTURES lump... for real, this time.
void R_ParseTEXTURESLump(UINT16 wadNum, UINT16 lumpNum, INT32 *texindex)
{
char *texturesLump;
size_t texturesLumpLength;
char *texturesText;
char *texturesToken;
texture_t *newTexture;
I_Assert(texindex != NULL);
// Since lumps AREN'T \0-terminated like I'd assumed they should be, I'll
// need to make a space of memory where I can ensure that it will terminate
// correctly. Start by loading the relevant data from the WAD.
texturesLump = (char *)W_CacheLumpNumPwad(wadNum, lumpNum, PU_STATIC);
// If that didn't exist, we have nothing to do here.
if (texturesLump == NULL) return;
// If we're still here, then it DOES exist; figure out how long it is, and allot memory accordingly.
texturesLumpLength = W_LumpLengthPwad(wadNum, lumpNum);
texturesText = (char *)Z_Malloc((texturesLumpLength+1)*sizeof(char),PU_STATIC,NULL);
// Now move the contents of the lump into this new location.
memmove(texturesText,texturesLump,texturesLumpLength);
// Make damn well sure the last character in our new memory location is \0.
texturesText[texturesLumpLength] = '\0';
// Finally, free up the memory from the first data load, because we really
// don't need it.
Z_Free(texturesLump);
texturesToken = M_GetToken(texturesText);
while (texturesToken != NULL)
{
if (stricmp(texturesToken, "WALLTEXTURE") == 0 || stricmp(texturesToken, "TEXTURE") == 0)
{
Z_Free(texturesToken);
// Get the new texture
newTexture = R_ParseTexture(true);
// Store the new texture
textures[*texindex] = newTexture;
texturewidth[*texindex] = newTexture->width;
textureheight[*texindex] = newTexture->height << FRACBITS;
// Increment i back in R_LoadTextures()
(*texindex)++;
}
else
{
I_Error("Error parsing TEXTURES lump: Expected \"WALLTEXTURE\" or \"TEXTURE\", got \"%s\"",texturesToken);
}
texturesToken = M_GetToken(NULL);
}
Z_Free(texturesToken);
Z_Free((void *)texturesText);
}
// Search for flat name.
lumpnum_t R_GetFlatNumForName(const char *name)
{
INT32 i;
lumpnum_t lump;
lumpnum_t start;
lumpnum_t end;
// Scan wad files backwards so patched flats take preference.
for (i = numwadfiles - 1; i >= 0; i--)
{
switch (wadfiles[i]->type)
{
case RET_WAD:
if ((start = W_CheckNumForMarkerStartPwad("F_START", (UINT16)i, 0)) == INT16_MAX)
{
if ((start = W_CheckNumForMarkerStartPwad("FF_START", (UINT16)i, 0)) == INT16_MAX)
continue;
else if ((end = W_CheckNumForNamePwad("FF_END", (UINT16)i, start)) == INT16_MAX)
continue;
}
else
if ((end = W_CheckNumForNamePwad("F_END", (UINT16)i, start)) == INT16_MAX)
continue;
break;
case RET_PK3:
if ((start = W_CheckNumForFolderStartPK3("Flats/", i, 0)) == INT16_MAX)
continue;
if ((end = W_CheckNumForFolderEndPK3("Flats/", i, start)) == INT16_MAX)
continue;
break;
default:
continue;
}
// Now find lump with specified name in that range.
lump = W_CheckNumForNamePwad(name, (UINT16)i, start);
if (lump < end)
{
lump += (i<<16); // found it, in our constraints
break;
}
lump = LUMPERROR;
}
return lump;
}
void R_ClearTextureNumCache(boolean btell)
{
if (tidcache)
Z_Free(tidcache);
tidcache = NULL;
if (btell)
CONS_Debug(DBG_SETUP, "Fun Fact: There are %d textures used in this map.\n", tidcachelen);
tidcachelen = 0;
}
//
// R_CheckTextureNumForName
//
// Check whether texture is available. Filter out NoTexture indicator.
//
INT32 R_CheckTextureNumForName(const char *name)
{
INT32 i;
// "NoTexture" marker.
if (name[0] == '-')
return 0;
for (i = 0; i < tidcachelen; i++)
if (!strncasecmp(tidcache[i].name, name, 8))
return tidcache[i].id;
// Need to parse the list backwards, so textures loaded more recently are used in lieu of ones loaded earlier
//for (i = 0; i < numtextures; i++) <- old
for (i = (numtextures - 1); i >= 0; i--) // <- new
if (!strncasecmp(textures[i]->name, name, 8))
{
tidcachelen++;
Z_Realloc(tidcache, tidcachelen * sizeof(*tidcache), PU_STATIC, &tidcache);
strncpy(tidcache[tidcachelen-1].name, name, 8);
tidcache[tidcachelen-1].name[8] = '\0';
#ifndef ZDEBUG
CONS_Debug(DBG_SETUP, "texture #%s: %s\n", sizeu1(tidcachelen), tidcache[tidcachelen-1].name);
#endif
tidcache[tidcachelen-1].id = i;
return i;
}
return -1;
}
//
// R_TextureNumForName
//
// Calls R_CheckTextureNumForName, aborts with error message.
//
INT32 R_TextureNumForName(const char *name)
{
const INT32 i = R_CheckTextureNumForName(name);
if (i == -1)
{
static INT32 redwall = -2;
CONS_Debug(DBG_SETUP, "WARNING: R_TextureNumForName: %.8s not found\n", name);
if (redwall == -2)
redwall = R_CheckTextureNumForName("REDWALL");
if (redwall != -1)
return redwall;
return 1;
}
return i;
}
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