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Clip tmap p3_z locally

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This commit is contained in:
Kp 2014-11-16 19:14:50 +00:00
parent b11069bc45
commit 84fd2b027a
1 changed files with 3 additions and 7 deletions
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10
common/texmap/ntmap.cpp
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@ -848,18 +848,14 @@ void draw_tmap(grs_bitmap *bp,int nverts,g3s_point **vertbuf)
for (int i=0; i<nverts; i++) {
g3ds_vertex *tvp = &Tmap1.verts[i];
g3s_point *vp = vertbuf[i];
auto vp = vertbuf[i];
tvp->x2d = vp->p3_sx;
tvp->y2d = vp->p3_sy;
// Check for overflow on fixdiv. Will overflow on vp->z <= something small. Allow only as low as 256.
if (vp->p3_z < 256) {
vp->p3_z = 256;
// Int3(); // we would overflow if we divided!
}
tvp->z = fixdiv(F1_0*12, vp->p3_z);
auto clipped_p3_z = std::max(256, vp->p3_z);
tvp->z = fixdiv(F1_0*12, clipped_p3_z);
tvp->u = vp->p3_u << 6; //* bp->bm_w;
tvp->v = vp->p3_v << 6; //* bp->bm_h;