//
// R_GenerateComposite
// Using the texture definition,
// the composite texture is created from the patches,
// and each column is cached.
//
void R_GenerateComposite (int texnum)
{
byte* block;
texture_t* texture;
texpatch_t* patch;
patch_t* realpatch;
int x;
int x1;
int x2;
int i;
postColumn_t* patchcol;
short* collump;
unsigned short* colofs;
texture = ::g->s_textures[texnum];
block = (byte*)DoomLib::Z_Malloc (::g->s_texturecompositesize[texnum],
PU_CACHE_SHARED,
&::g->s_texturecomposite[texnum]);
collump = ::g->s_texturecolumnlump[texnum];
colofs = ::g->s_texturecolumnofs[texnum];
// Composite the columns together.
patch = texture->patches;
for (i=0 , patch = texture->patches;
i<texture->patchcount;
i++, patch++)
{
realpatch = (patch_t*)W_CacheLumpNum (patch->patch, PU_CACHE_SHARED);
x1 = patch->originx;
x2 = x1 + SHORT(realpatch->width);
if (x1<0)
x = 0;
else
x = x1;
if (x2 > texture->width)
x2 = texture->width;
for ( ; x<x2 ; x++)
{
// Column does not have multiple patches?
if (collump[x] >= 0)
continue;
patchcol = (postColumn_t *)((byte *)realpatch
+ LONG(realpatch->columnofs[x-x1]));
R_DrawColumnInCache (patchcol,
block + colofs[x],
patch->originy,
texture->height);
}
}
}
//
// R_GenerateComposite
// Using the texture definition,
// the composite texture is created from the patches,
// and each column is cached.
//
void R_GenerateComposite (int texnum)
{
texture_t* texture;
texpatch_t* patch;
patch_t* realpatch;
int x;
int x1;
int x2;
int i;
column_t* patchcol;
short* collump;
unsigned short* colofs;
texture = textures[texnum];
texturecomposite[texnum] = (unsigned char*)malloc (texturecompositesize[texnum]);
collump = texturecolumnlump[texnum];
colofs = texturecolumnofs[texnum];
// Composite the columns together.
patch = texture->patches;
for (i=0 , patch = texture->patches;
i<texture->patchcount;
i++, patch++)
{
realpatch = (patch_t*)WadManager::getLump (patch->patch);
x1 = patch->originx;
x2 = x1 + realpatch->width;
if (x1<0)
x = 0;
else
x = x1;
if (x2 > texture->width)
x2 = texture->width;
for ( ; x<x2 ; x++)
{
// Column does not have multiple patches?
if (collump[x] >= 0)
continue;
patchcol = (column_t *)((unsigned char *)realpatch
+ realpatch->columnofs[x-x1]);
R_DrawColumnInCache (patchcol,
texturecomposite[texnum] + colofs[x],
patch->originy,
texture->height);
}
}
}
/*
===================
=
= R_GenerateComposite
=
===================
*/
void R_GenerateComposite (int texnum)
{
byte *block;
texture_t *texture;
texpatch_t *patch;
patch_t *realpatch;
int x, x1, x2;
int i;
column_t *patchcol;
short *collump;
unsigned short *colofs;
texture = textures[texnum];
block = Z_Malloc (texturecompositesize[texnum], PU_STATIC,
&texturecomposite[texnum]);
collump = texturecolumnlump[texnum];
colofs = texturecolumnofs[texnum];
//
// composite the columns together
//
patch = texture->patches;
for (i=0 , patch = texture->patches; i<texture->patchcount ; i++, patch++)
{
realpatch = W_CacheLumpNum (patch->patch, PU_CACHE);
x1 = patch->originx;
x2 = x1 + SHORT(realpatch->width);
if (x1<0)
x = 0;
else
x = x1;
if (x2 > texture->width)
x2 = texture->width;
for ( ; x<x2 ; x++)
{
if (collump[x] >= 0)
continue; // column does not have multiple patches
patchcol = (column_t *)((byte *)realpatch +
LONG(realpatch->columnofs[x-x1]));
R_DrawColumnInCache (patchcol, block + colofs[x], patch->originy,
texture->height);
}
}
// now that the texture has been built, it is purgable
Z_ChangeTag (block, PU_CACHE);
void R_GenerateComposite (int texnum)
{
byte *block = (byte *)Z_Malloc (texturecompositesize[texnum], PU_STATIC,
(void **) &texturecomposite[texnum]);
texture_t *texture = textures[texnum];
// Composite the columns together.
texpatch_t *texpatch = texture->patches;
short *collump = texturecolumnlump[texnum];
// killough 4/9/98: marks to identify transparent regions in merged textures
byte *marks = new byte[texture->width * texture->height];
memset(marks, 0, texture->width * texture->height);
for (int i = texture->patchcount; --i >=0; texpatch++)
{
patch_t *patch = W_CachePatch(texpatch->patch);
int x1 = texpatch->originx, x2 = x1 + patch->width();
const int *cofs = patch->columnofs-x1;
if (x1<0)
x1 = 0;
if (x2 > texture->width)
x2 = texture->width;
for (; x1 < x2 ; x1++)
{
if (collump[x1] == -1) // Column has multiple patches?
{
// killough 1/25/98, 4/9/98: Fix medusa bug.
tallpost_t *srcpost = (tallpost_t*)((byte*)patch + LELONG(cofs[x1]));
tallpost_t *destpost = (tallpost_t*)(block + texturecolumnofs[texnum][x1]);
R_DrawColumnInCache(srcpost, destpost->data(), texpatch->originy, texture->height,
marks + x1 * texture->height);
}
}
}
// killough 4/9/98: Next, convert multipatched columns into true columns,
// to fix Medusa bug while still allowing for transparent regions.
byte *tmpdata = new byte[texture->height]; // temporary post data
for (int i = 0; i < texture->width; i++)
{
if (collump[i] != -1) // process only multipatched columns
continue;
tallpost_t *post = (tallpost_t *)(block + texturecolumnofs[texnum][i]);
const byte *mark = marks + i * texture->height;
int j = 0;
// save column in temporary so we can shuffle it around
memcpy(tmpdata, post->data(), texture->height);
// reconstruct the column by scanning transparency marks
while (true)
{
while (j < texture->height && !mark[j]) // skip transparent pixels
j++;
if (j >= texture->height) // if at end of column
{
post->writeend(); // end-of-column marker
break;
}
post->topdelta = j; // starting offset of post
// count opaque pixels
for (post->length = 0; j < texture->height && mark[j]; j++)
post->length++;
// copy opaque pixels from the temporary back into the column
memcpy(post->data(), tmpdata + post->topdelta, post->length);
post = post->next();
}
}
delete [] marks;
delete [] tmpdata;
// Now that the texture has been built in column cache,
// it is purgable from zone memory.
Z_ChangeTag(block, PU_CACHE);
}
void R_GenerateComposite (int texnum)
{
byte *block = (byte *)Z_Malloc (texturecompositesize[texnum], PU_STATIC,
(void **) &texturecomposite[texnum]);
texture_t *texture = textures[texnum];
// Composite the columns together.
texpatch_t *patch = texture->patches;
short *collump = texturecolumnlump[texnum];
unsigned *colofs = texturecolumnofs[texnum]; // killough 4/9/98: make 32-bit
int i = texture->patchcount;
// killough 4/9/98: marks to identify transparent regions in merged textures
byte *marks = (byte *)Calloc (texture->width, texture->height), *source;
for (; --i >=0; patch++)
{
patch_t *realpatch = W_CachePatch (patch->patch);
int x1 = patch->originx, x2 = x1 + realpatch->width();
const int *cofs = realpatch->columnofs-x1;
if (x1<0)
x1 = 0;
if (x2 > texture->width)
x2 = texture->width;
for (; x1<x2 ; x1++)
if (collump[x1] == -1) // Column has multiple patches?
// killough 1/25/98, 4/9/98: Fix medusa bug.
R_DrawColumnInCache((column_t*)((byte*)realpatch+LONG(cofs[x1])),
block+colofs[x1],patch->originy,texture->height,
marks + x1 * texture->height);
}
// killough 4/9/98: Next, convert multipatched columns into true columns,
// to fix Medusa bug while still allowing for transparent regions.
source = (byte *)Malloc (texture->height); // temporary column
for (i=0; i < texture->width; i++)
if (collump[i] == -1) // process only multipatched columns
{
column_t *col = (column_t *)(block + colofs[i] - 3); // cached column
const byte *mark = marks + i * texture->height;
int j = 0;
// save column in temporary so we can shuffle it around
memcpy(source, (byte *) col + 3, texture->height);
for (;;) // reconstruct the column by scanning transparency marks
{
while (j < texture->height && !mark[j]) // skip transparent cells
j++;
if (j >= texture->height) // if at end of column
{
col->topdelta = 255; // end-of-column marker
break;
}
col->topdelta = j; // starting offset of post
for (col->length=0; j < texture->height && mark[j]; j++)
col->length++; // count opaque cells
// copy opaque cells from the temporary back into the column
memcpy((byte *) col + 3, source + col->topdelta, col->length);
col = (column_t *)((byte *) col + col->length + 4); // next post
}
}
M_Free(source); // free temporary column
M_Free(marks); // free transparency marks
// Now that the texture has been built in column cache,
// it is purgable from zone memory.
Z_ChangeTag(block, PU_CACHE);
}
//
// R_GenerateComposite
// Using the texture definition,
// the composite texture is created from the patches,
// and each column is cached.
//
// Rewritten by Lee Killough for performance and to fix Medusa bug
//
static void R_GenerateComposite(int texnum)
{
byte *block = Z_Malloc(texturecompositesize[texnum], PU_STATIC,
(void **)&texturecomposite[texnum]);
texture_t *texture = textures[texnum];
// Composite the columns together.
texpatch_t *patch = texture->patches;
short *collump = texturecolumnlump[texnum];
unsigned int *colofs = texturecolumnofs[texnum];
int i = texture->patchcount;
// killough 4/9/98: marks to identify transparent regions in merged textures
byte *marks = calloc(texture->width, texture->height), *source;
boolean tekwall1 = (texnum == R_CheckTextureNumForName("TEKWALL1"));
for (; --i >= 0; patch++)
{
patch_t *realpatch = W_CacheLumpNum(patch->patch, PU_CACHE);
int x1 = MAX(0, patch->originx);
int x2 = MIN(x1 + SHORT(realpatch->width), texture->width);
const int *cofs = realpatch->columnofs - x1;
for (; x1 < x2 ; x1++)
if (collump[x1] == -1) // Column has multiple patches?
// killough 1/25/98, 4/9/98: Fix medusa bug.
R_DrawColumnInCache((column_t *)((byte *)realpatch + LONG(cofs[x1])),
block + colofs[x1], patch->originy, texture->height,
marks + x1 * texture->height, tekwall1);
}
// killough 4/9/98: Next, convert multipatched columns into true columns,
// to fix Medusa bug while still allowing for transparent regions.
source = (byte *)malloc(texture->height); // temporary column
for (i = 0; i < texture->width; i++)
if (collump[i] == -1) // process only multipatched columns
{
column_t *col = (column_t *)(block + colofs[i] - 3); // cached column
const byte *mark = marks + i * texture->height;
int j = 0;
// save column in temporary so we can shuffle it around
memcpy(source, (byte *)col + 3, texture->height);
for (;;) // reconstruct the column by scanning transparency marks
{
unsigned int len; // killough 12/98
while (j < texture->height && !mark[j]) // skip transparent cells
j++;
if (j >= texture->height) // if at end of column
{
col->topdelta = -1; // end-of-column marker
break;
}
col->topdelta = j; // starting offset of post
// killough 12/98:
// Use 32-bit len counter, to support tall 1s multipatched textures
for (len = 0; j < texture->height && mark[j]; j++)
len++; // count opaque cells
col->length = len; // killough 12/98: intentionally truncate length
// copy opaque cells from the temporary back into the column
memcpy((byte *)col + 3, source + col->topdelta, len);
col = (column_t *)((byte *)col + len + 4); // next post
}
}
free(source); // free temporary column
free(marks); // free transparency marks
// Now that the texture has been built in column cache,
// it is purgable from zone memory.
Z_ChangeTag(block, PU_CACHE);
}
//
// 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, dynamic ligthing, & speed.
//
// This is not optimised, but it's supposed to be executed only once
// per level, when enough memory is available.
//
static UINT8 *R_GenerateTexture(size_t texnum)
{
UINT8 *block;
UINT8 *blocktex;
texture_t *texture;
texpatch_t *patch;
patch_t *realpatch;
int x, x1, x2, i;
size_t blocksize;
column_t *patchcol;
UINT32 *colofs;
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;
realpatch = W_CacheLumpNumPwad(patch->wad, patch->lump, PU_CACHE);
// Check the patch for holes.
if (texture->width > SHORT(realpatch->width) || texture->height > SHORT(realpatch->height))
holey = true;
colofs = (UINT32 *)realpatch->columnofs;
for (x = 0; x < texture->width && !holey; x++)
{
column_t *col = (column_t *)((UINT8 *)realpatch + LONG(colofs[x]));
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;
blocksize = W_LumpLengthPwad(patch->wad, patch->lump);
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 = (UINT32 *)(void *)(block + 8);
texturecolumnofs[texnum] = colofs;
blocktex = block;
for (x = 0; x < texture->width; x++)
colofs[x] = LONG(LONG(colofs[x]) + 3);
goto done;
}
// Otherwise, do multipatch format.
}
// multi-patch textures (or 'composite')
texture->holes = false;
blocksize = (texture->width * 4) + (texture->width * texture->height);
texturememory += blocksize;
block = Z_Malloc(blocksize+1, PU_STATIC, &texturecache[texnum]);
memset(block, 0xF7, blocksize+1); // Transparency hack
// columns lookup table
colofs = (UINT32 *)(void *)block;
texturecolumnofs[texnum] = 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++)
{
realpatch = W_CacheLumpNumPwad(patch->wad, patch->lump, PU_CACHE);
x1 = patch->originx;
x2 = x1 + SHORT(realpatch->width);
if (x1 < 0)
x = 0;
else
x = x1;
if (x2 > texture->width)
x2 = texture->width;
for (; x < x2; x++)
{
patchcol = (column_t *)((UINT8 *)realpatch + LONG(realpatch->columnofs[x-x1]));
// generate column ofset lookup
colofs[x] = LONG((x * texture->height) + (texture->width*4));
R_DrawColumnInCache(patchcol, block + LONG(colofs[x]), patch->originy, texture->height);
}
}
done:
// Now that the texture has been built in column cache, it is purgable from zone memory.
Z_ChangeTag(block, PU_CACHE);
return blocktex;
}