//---------------------------------------------------------------------------
static void createTextureCompositePatch(int id) {
rpatch_t *composite_patch;
texture_t *texture;
texpatch_t *texpatch;
int patchNum;
const patch_t *oldPatch;
const column_t *oldColumn, *oldPrevColumn, *oldNextColumn;
int i, x, y;
int oy, count;
int pixelDataSize;
int columnsDataSize;
int postsDataSize;
int dataSize;
int numPostsTotal;
const unsigned char *oldColumnPixelData;
int numPostsUsedSoFar;
int edgeSlope;
count_t *countsInColumn;
#ifdef RANGECHECK
if (id >= numtextures)
I_Error("createTextureCompositePatch: %i >= numtextures", id);
#endif
composite_patch = &texture_composites[id];
texture = textures[id];
composite_patch->width = texture->width;
composite_patch->height = texture->height;
composite_patch->widthmask = texture->widthmask;
composite_patch->leftoffset = 0;
composite_patch->topoffset = 0;
composite_patch->isNotTileable = 0;
// work out how much memory we need to allocate for this patch's data
pixelDataSize = (composite_patch->width * composite_patch->height + 4) & ~3;
columnsDataSize = sizeof(rcolumn_t) * composite_patch->width;
// count the number of posts in each column
countsInColumn = (count_t *)calloc(sizeof(count_t), composite_patch->width);
numPostsTotal = 0;
for (i=0; i<texture->patchcount; i++) {
texpatch = &texture->patches[i];
patchNum = texpatch->patch;
oldPatch = (const patch_t*)W_CacheLumpNum(patchNum);
for (x=0; x<SHORT(oldPatch->width); x++) {
int tx = texpatch->originx + x;
if (tx < 0)
continue;
if (tx >= composite_patch->width)
break;
countsInColumn[tx].patches++;
oldColumn = (const column_t *)((const byte *)oldPatch + LONG(oldPatch->columnofs[x]));
while (oldColumn->topdelta != 0xff) {
countsInColumn[tx].posts++;
numPostsTotal++;
oldColumn = (const column_t *)((const byte *)oldColumn + oldColumn->length + 4);
}
}
W_UnlockLumpNum(patchNum);
}
postsDataSize = numPostsTotal * sizeof(rpost_t);
// allocate our data chunk
dataSize = pixelDataSize + columnsDataSize + postsDataSize;
composite_patch->data = (unsigned char*)Z_Malloc(dataSize, PU_STATIC, (void **)&composite_patch->data);
memset(composite_patch->data, 0, dataSize);
// set out pixel, column, and post pointers into our data array
composite_patch->pixels = composite_patch->data;
composite_patch->columns = (rcolumn_t*)((unsigned char*)composite_patch->pixels + pixelDataSize);
composite_patch->posts = (rpost_t*)((unsigned char*)composite_patch->columns + columnsDataSize);
// sanity check that we've got all the memory allocated we need
assert((((byte*)composite_patch->posts + numPostsTotal*sizeof(rpost_t)) - (byte*)composite_patch->data) == dataSize);
memset(composite_patch->pixels, 0xff, (composite_patch->width*composite_patch->height));
numPostsUsedSoFar = 0;
for (x=0; x<texture->width; x++) {
// setup the column's data
composite_patch->columns[x].pixels = composite_patch->pixels + (x*composite_patch->height);
composite_patch->columns[x].numPosts = countsInColumn[x].posts;
composite_patch->columns[x].posts = composite_patch->posts + numPostsUsedSoFar;
numPostsUsedSoFar += countsInColumn[x].posts;
}
// fill in the pixels, posts, and columns
for (i=0; i<texture->patchcount; i++) {
texpatch = &texture->patches[i];
patchNum = texpatch->patch;
oldPatch = (const patch_t*)W_CacheLumpNum(patchNum);
for (x=0; x<SHORT(oldPatch->width); x++) {
int tx = texpatch->originx + x;
if (tx < 0)
continue;
if (tx >= composite_patch->width)
break;
oldColumn = (const column_t *)((const byte *)oldPatch + LONG(oldPatch->columnofs[x]));
{
// tiling
int prevColumnIndex = x-1;
int nextColumnIndex = x+1;
while (prevColumnIndex < 0) prevColumnIndex += SHORT(oldPatch->width);
while (nextColumnIndex >= SHORT(oldPatch->width)) nextColumnIndex -= SHORT(oldPatch->width);
oldPrevColumn = (const column_t *)((const byte *)oldPatch + LONG(oldPatch->columnofs[prevColumnIndex]));
oldNextColumn = (const column_t *)((const byte *)oldPatch + LONG(oldPatch->columnofs[nextColumnIndex]));
}
while (oldColumn->topdelta != 0xff) {
rpost_t *post = &composite_patch->columns[tx].posts[countsInColumn[tx].posts_used];
oldColumnPixelData = (const byte *)oldColumn + 3;
oy = texpatch->originy;
count = oldColumn->length;
// the original renderer had several bugs which we reproduce here
if (countsInColumn[tx].patches > 1) {
// when there are multiple patches, then we need to handle the
// column differently
if (i == 0) {
// draw first patch at original position, it will be partly
// overdrawn below
for (y=0; y<count; y++) {
int ty = oy + oldColumn->topdelta + y;
if (ty < 0)
continue;
if (ty >= composite_patch->height)
break;
composite_patch->pixels[tx * composite_patch->height + ty] = oldColumnPixelData[y];
}
}
// do the buggy clipping
if ((oy + oldColumn->topdelta) < 0) {
count += oy;
oy = 0;
}
} else {
// with a single patch only negative y origins are wrong
oy = 0;
}
// set up the post's data
post->topdelta = oldColumn->topdelta + oy;
post->length = count;
if ((post->topdelta + post->length) > composite_patch->height) {
if (post->topdelta > composite_patch->height)
post->length = 0;
else
post->length = composite_patch->height - post->topdelta;
}
if (post->topdelta < 0) {
if ((post->topdelta + post->length) <= 0)
post->length = 0;
else
post->length -= post->topdelta;
post->topdelta = 0;
}
post->slope = 0;
edgeSlope = getColumnEdgeSlope(oldPrevColumn, oldNextColumn, oldColumn->topdelta);
if (edgeSlope == 1) post->slope |= RDRAW_EDGESLOPE_TOP_UP;
else if (edgeSlope == -1) post->slope |= RDRAW_EDGESLOPE_TOP_DOWN;
edgeSlope = getColumnEdgeSlope(oldPrevColumn, oldNextColumn, oldColumn->topdelta+count);
if (edgeSlope == 1) post->slope |= RDRAW_EDGESLOPE_BOT_UP;
else if (edgeSlope == -1) post->slope |= RDRAW_EDGESLOPE_BOT_DOWN;
// fill in the post's pixels
for (y=0; y<count; y++) {
int ty = oy + oldColumn->topdelta + y;
if (ty < 0)
continue;
if (ty >= composite_patch->height)
break;
composite_patch->pixels[tx * composite_patch->height + ty] = oldColumnPixelData[y];
}
oldColumn = (const column_t *)((const byte *)oldColumn + oldColumn->length + 4);
countsInColumn[tx].posts_used++;
assert(countsInColumn[tx].posts_used <= countsInColumn[tx].posts);
}
}
W_UnlockLumpNum(patchNum);
}
for (x=0; x<texture->width; x++) {
rcolumn_t *column;
if (countsInColumn[x].patches <= 1)
continue;
// cleanup posts on multipatch columns
column = &composite_patch->columns[x];
i = 0;
while (i<(column->numPosts-1)) {
rpost_t *post1 = &column->posts[i];
rpost_t *post2 = &column->posts[i+1];
int length;
if ((post2->topdelta - post1->topdelta) < 0)
switchPosts(post1, post2);
if ((post1->topdelta + post1->length) >= post2->topdelta) {
length = (post1->length + post2->length) - ((post1->topdelta + post1->length) - post2->topdelta);
if (post1->length < length) {
post1->slope = post2->slope;
post1->length = length;
}
removePostFromColumn(column, i+1);
i = 0;
continue;
}
i++;
}
}
if (1 || composite_patch->isNotTileable) {
const rcolumn_t *column, *prevColumn;
// copy the patch image down and to the right where there are
// holes to eliminate the black halo from bilinear filtering
for (x=0; x<composite_patch->width; x++) {
//oldColumn = (const column_t *)((const byte *)oldPatch + oldPatch->columnofs[x]);
column = R_GetPatchColumnClamped(composite_patch, x);
prevColumn = R_GetPatchColumnClamped(composite_patch, x-1);
if (column->pixels[0] == 0xff) {
// force the first pixel (which is a hole), to use
// the color from the next solid spot in the column
for (y=0; y<composite_patch->height; y++) {
if (column->pixels[y] != 0xff) {
column->pixels[0] = column->pixels[y];
break;
}
}
}
// copy from above or to the left
for (y=1; y<composite_patch->height; y++) {
//if (getIsSolidAtSpot(oldColumn, y)) continue;
if (column->pixels[y] != 0xff) continue;
// this pixel is a hole
if (x && prevColumn->pixels[y-1] != 0xff) {
// copy the color from the left
column->pixels[y] = prevColumn->pixels[y];
}
else {
// copy the color from above
column->pixels[y] = column->pixels[y-1];
}
}
}
// verify that the patch truly is non-rectangular since
// this determines tiling later on
}
free(countsInColumn);
}
static void createTextureCompositePatch(int id)
{
rpatch_t *composite_patch = &texture_composites[id];
texture_t *texture = textures[id];
texpatch_t *texpatch;
int patchNum;
const patch_t *oldPatch;
const column_t *oldColumn;
int i, x, y;
int oy, count;
int pixelDataSize;
int columnsDataSize;
int postsDataSize;
int dataSize;
int numPostsTotal;
const unsigned char *oldColumnPixelData;
int numPostsUsedSoFar;
count_t *countsInColumn;
composite_patch->width = texture->width;
composite_patch->height = texture->height;
composite_patch->widthmask = texture->widthmask;
composite_patch->leftoffset = 0;
composite_patch->topoffset = 0;
composite_patch->flags = 0;
// work out how much memory we need to allocate for this patch's data
pixelDataSize = (composite_patch->width * composite_patch->height + 4) & ~3;
columnsDataSize = sizeof(rcolumn_t) * composite_patch->width;
// count the number of posts in each column
countsInColumn = (count_t *)calloc(sizeof(count_t), composite_patch->width);
numPostsTotal = 0;
for (i = 0; i < texture->patchcount; ++i)
{
texpatch = &texture->patches[i];
patchNum = texpatch->patch;
oldPatch = (const patch_t *)W_CacheLumpNum(patchNum, PU_STATIC);
for (x = 0; x < SHORT(oldPatch->width); ++x)
{
int tx = texpatch->originx + x;
if (tx < 0)
continue;
if (tx >= composite_patch->width)
break;
countsInColumn[tx].patches++;
oldColumn = (const column_t *)((const byte *)oldPatch + LONG(oldPatch->columnofs[x]));
while (oldColumn->topdelta != 0xFF)
{
countsInColumn[tx].posts++;
numPostsTotal++;
oldColumn = (const column_t *)((const byte *)oldColumn + oldColumn->length + 4);
}
}
W_ReleaseLumpNum(patchNum);
}
postsDataSize = numPostsTotal * sizeof(rpost_t);
// allocate our data chunk
dataSize = pixelDataSize + columnsDataSize + postsDataSize;
composite_patch->data = (unsigned char *)Z_Malloc(dataSize, PU_STATIC,
(void **)&composite_patch->data);
memset(composite_patch->data, 0, dataSize);
// set out pixel, column, and post pointers into our data array
composite_patch->pixels = composite_patch->data;
composite_patch->columns = (rcolumn_t*)((unsigned char*)composite_patch->pixels
+ pixelDataSize);
composite_patch->posts = (rpost_t*)((unsigned char*)composite_patch->columns
+ columnsDataSize);
// sanity check that we've got all the memory allocated we need
assert((((byte *)composite_patch->posts + numPostsTotal * sizeof(rpost_t))
- (byte *)composite_patch->data) == dataSize);
memset(composite_patch->pixels, 0xFF, (composite_patch->width * composite_patch->height));
numPostsUsedSoFar = 0;
for (x = 0; x < texture->width; ++x)
{
// setup the column's data
composite_patch->columns[x].pixels = composite_patch->pixels
+ (x * composite_patch->height);
composite_patch->columns[x].numPosts = countsInColumn[x].posts;
composite_patch->columns[x].posts = composite_patch->posts + numPostsUsedSoFar;
numPostsUsedSoFar += countsInColumn[x].posts;
}
// fill in the pixels, posts, and columns
for (i = 0; i < texture->patchcount; ++i)
{
texpatch = &texture->patches[i];
patchNum = texpatch->patch;
oldPatch = (const patch_t *)W_CacheLumpNum(patchNum, PU_STATIC);
for (x = 0; x < SHORT(oldPatch->width); ++x)
{
int top = -1;
int tx = texpatch->originx + x;
if (tx < 0)
continue;
if (tx >= composite_patch->width)
break;
oldColumn = (const column_t *)((const byte *)oldPatch + LONG(oldPatch->columnofs[x]));
while (oldColumn->topdelta != 0xFF)
{
rpost_t *post = &composite_patch->columns[tx].posts[countsInColumn[tx].posts_used];
// e6y: support for DeePsea's true tall patches
if (oldColumn->topdelta <= top)
top += oldColumn->topdelta;
else
top = oldColumn->topdelta;
oldColumnPixelData = (const byte *)oldColumn + 3;
oy = texpatch->originy;
count = oldColumn->length;
// the original renderer had several bugs which we reproduce here
if (countsInColumn[tx].patches > 1)
{
// when there are multiple patches, then we need to handle the
// column differently
if (!i)
{
// draw first patch at original position, it will be partly
// overdrawn below
for (y = 0; y < count; ++y)
{
int ty = oy + top + y;
if (ty < 0)
continue;
if (ty >= composite_patch->height)
break;
composite_patch->pixels[tx * composite_patch->height + ty]
= oldColumnPixelData[y];
}
}
// do the buggy clipping
if (oy + top < 0)
{
count += oy;
oy = 0;
}
}
else
oy = 0; // with a single patch only negative y origins are wrong
// set up the post's data
post->topdelta = top + oy;
post->length = count;
if ((post->topdelta + post->length) > composite_patch->height)
{
if (post->topdelta > composite_patch->height)
post->length = 0;
else
post->length = composite_patch->height - post->topdelta;
}
if (post->topdelta < 0)
{
if ((post->topdelta + post->length) <= 0)
post->length = 0;
else
post->length -= post->topdelta;
post->topdelta = 0;
}
// fill in the post's pixels
for (y = 0; y < count; ++y)
{
int ty = oy + top + y;
if (ty < 0)
continue;
if (ty >= composite_patch->height)
break;
composite_patch->pixels[tx * composite_patch->height + ty]
= oldColumnPixelData[y];
}
oldColumn = (const column_t *)((const byte *)oldColumn + oldColumn->length + 4);
countsInColumn[tx].posts_used++;
assert(countsInColumn[tx].posts_used <= countsInColumn[tx].posts);
}
}
W_ReleaseLumpNum(patchNum);
}
for (x = 0; x < texture->width; ++x)
{
rcolumn_t *column;
if (countsInColumn[x].patches <= 1)
continue;
// cleanup posts on multipatch columns
column = &composite_patch->columns[x];
i = 0;
while (i < column->numPosts - 1)
{
rpost_t *post1 = &column->posts[i];
rpost_t *post2 = &column->posts[i + 1];
if (post2->topdelta - post1->topdelta < 0)
switchPosts(post1, post2);
if (post1->topdelta + post1->length >= post2->topdelta)
{
int length = (post1->length + post2->length) - ((post1->topdelta
+ post1->length) - post2->topdelta);
if (post1->length < length)
post1->length = length;
removePostFromColumn(column, i + 1);
i = 0;
continue;
}
i++;
}
}
{
const rcolumn_t *column;
const rcolumn_t *prevColumn;
// copy the patch image down and to the right where there are
// holes to eliminate the black halo from bilinear filtering
for (x = 0; x < composite_patch->width; ++x)
{
column = R_GetPatchColumnClamped(composite_patch, x);
prevColumn = R_GetPatchColumnClamped(composite_patch, x - 1);
if (column->pixels[0] == 0xFF)
{
// e6y: marking of all patches with holes
composite_patch->flags |= PATCH_HASHOLES;
// force the first pixel (which is a hole), to use
// the color from the next solid spot in the column
for (y = 0; y < composite_patch->height; ++y)
{
if (column->pixels[y] != 0xFF)
{
column->pixels[0] = column->pixels[y];
break;
}
}
}
// copy from above or to the left
for (y = 1; y < composite_patch->height; ++y)
{
if (column->pixels[y] != 0xFF)
continue;
// this pixel is a hole
// e6y: marking of all patches with holes
composite_patch->flags |= PATCH_HASHOLES;
if (x && prevColumn->pixels[y - 1] != 0xFF)
column->pixels[y] = prevColumn->pixels[y]; // copy the color from the left
else
column->pixels[y] = column->pixels[y - 1]; // copy the color from above
}
}
}
free(countsInColumn);
}