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Fix bounds checks occurring after array access in tessectrap() and polymost_precache() with very minor cleanup of surrounding lines.

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git-svn-id: https://svn.eduke32.com/eduke32@7104 1a8010ca-5511-0410-912e-c29ae57300e0
This commit is contained in:
terminx 2018-10-25 23:31:05 +00:00
parent ad8a65d154
commit 385562d143
1 changed files with 6 additions and 9 deletions
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15
source/build/src/polymost.cpp
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@ -7345,7 +7345,7 @@ static void tessectrap(const float *px, const float *py, const int32_t *point2,
npoints = numpoints; z = 0;
for (i=0; i<numpoints; i++)
{
j = npoint2[i]; if ((point2[i] < i) && (i < numpoints-1)) z = 3;
j = npoint2[i]; if ((i < numpoints-1) && (point2[i] < i)) z = 3;
if (j < 0) continue;
k = npoint2[j];
m0 = (px[j]-px[i])*(py[k]-py[j]);
@ -8007,28 +8007,25 @@ void polymost_precache(int32_t dapicnum, int32_t dapalnum, int32_t datype)
// datype is 0 for a wall/floor/ceiling and 1 for a sprite
// basically this just means walls are repeating
// while sprites are clamped
int32_t mid;
if (videoGetRenderMode() < REND_POLYMOST) return;
if ((palookup[dapalnum] == NULL) && (dapalnum < (MAXPALOOKUPS - RESERVEDPALS))) return;//dapalnum = 0;
if ((dapalnum < (MAXPALOOKUPS - RESERVEDPALS)) && (palookup[dapalnum] == NULL)) return;//dapalnum = 0;
//OSD_Printf("precached %d %d type %d\n", dapicnum, dapalnum, datype);
hicprecaching = 1;
texcache_fetch(dapicnum, dapalnum, 0, (datype & 1)*(DAMETH_CLAMPED|DAMETH_MASK));
hicprecaching = 0;
if (datype == 0 || !usemodels) return;
mid = md_tilehasmodel(dapicnum,dapalnum);
int const mid = md_tilehasmodel(dapicnum, dapalnum);
if (mid < 0 || models[mid]->mdnum < 2) return;
int j = (models[mid]->mdnum == 3) ? ((md3model_t *)models[mid])->head.numsurfs : 0;
int const surfaces = (models[mid]->mdnum == 3) ? ((md3model_t *)models[mid])->head.numsurfs : 0;
for (bssize_t i = 0; i <= j; i++) mdloadskin((md2model_t *)models[mid], 0, dapalnum, i);
for (int i = 0; i <= surfaces; i++)
mdloadskin((md2model_t *)models[mid], 0, dapalnum, i);
}
#else /* if !defined USE_OPENGL */