olegpz
/
ericw-tools
mirror of https://github.com/ericwa/ericw-tools.git
0
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

vis: pass the input buffer length into CompressRow 

Signed-off-by: Kevin Shanahan <kmshanah@disenchant.net>
This commit is contained in:
Kevin Shanahan 2013-02-25 12:26:19 +10:30
parent a473fedcc9
commit 3e12ff141d
1 changed files with 14 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
vis/vis.c
View File

@ -510,14 +510,12 @@ LeafThread(void *unused)
===============
*/
static int
CompressRow(const byte *vis, byte *out)
CompressRow(const byte *vis, const int numbytes, byte *out)
{
int i, rep, numbytes;
int i, rep;
byte *dst;
dst = out;
numbytes = (portalleafs + 7) >> 3;
for (i = 0; i < numbytes; i++) {
*dst++ = vis[i];
if (vis[i])
@ -552,14 +550,14 @@ LeafFlow(int leafnum)
leaf_t *leaf;
byte *outbuffer;
byte *compressed;
int i, j, shift;
int i, j, shift, len;
int numvis;
byte *dest;
const portal_t *p;
//
// flow through all portals, collecting visible bits
//
/*
* flow through all portals, collecting visible bits
*/
outbuffer = uncompressed + leafnum * leafbytes;
leaf = &leafs[leafnum];
for (i = 0; i < leaf->numportals; i++) {
@ -574,7 +572,6 @@ LeafFlow(int leafnum)
if (outbuffer[leafnum >> 3] & (1 << (leafnum & 7)))
logprint("WARNING: Leaf portals saw into leaf (%i)\n", leafnum);
outbuffer[leafnum >> 3] |= (1 << (leafnum & 7));
numvis = 0;
@ -582,26 +579,27 @@ LeafFlow(int leafnum)
if (outbuffer[i >> 3] & (1 << (i & 3)))
numvis++;
//
// compress the bit string
//
/*
* compress the bit string
*/
if (verbose > 1)
logprint("leaf %4i : %4i visible\n", leafnum, numvis);
totalvis += numvis;
/* Allocate for worst case where RLE might grow the data (unlikely) */
compressed = malloc(portalleafs * 2 / 8);
i = CompressRow(outbuffer, compressed);
len = CompressRow(outbuffer, (portalleafs + 7) >> 3, compressed);
dest = vismap_p;
vismap_p += i;
vismap_p += len;
if (vismap_p > vismap_end)
Error("Vismap expansion overflow");
dleafs[leafnum + 1].visofs = dest - vismap; // leaf 0 is a common solid
/* leaf 0 is a common solid */
dleafs[leafnum + 1].visofs = dest - vismap;
memcpy(dest, compressed, i);
memcpy(dest, compressed, len);
free(compressed);
}