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hopefully more correct surface marking for dlights

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Bill Currie 2004-03-17 04:53:10 +00:00
parent 6c1c39c4d2
commit 4f79d8ce0a
1 changed files with 18 additions and 30 deletions
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48
libs/video/renderer/r_light.c
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@ -97,41 +97,29 @@ static inline void
real_mark_surfaces (float dist, msurface_t *surf, const vec3_t lightorigin,
dlight_t *light, int bit)
{
float dist2, d;
float dist2, is, it;
float maxdist = light->radius * light->radius;
vec3_t impact;
dist2 = dist * dist;
dist2 = maxdist - dist * dist;
VectorMultSub (light->origin, dist, surf->plane->normal, impact);
d = DotProduct (impact, surf->texinfo->vecs[0])
+ surf->texinfo->vecs[0][3] - surf->texturemins[0];
if (d < 0) {
dist2 += d * d;
if (dist2 >= maxdist)
return;
} else {
d -= surf->extents[0] + 16;
if (d > 0) {
dist2 += d * d;
if (dist2 >= maxdist)
return;
}
}
d = DotProduct (impact, surf->texinfo->vecs[1])
is = DotProduct (impact, surf->texinfo->vecs[0])
+ surf->texinfo->vecs[0][3] - surf->texturemins[0];
it = DotProduct (impact, surf->texinfo->vecs[1])
+ surf->texinfo->vecs[1][3] - surf->texturemins[1];
if (d < 0) {
dist2 += d * d;
if (dist2 >= maxdist)
return;
} else {
d -= surf->extents[1] + 16;
if (d > 0) {
dist2 += d * d;
if (dist2 >= maxdist)
return;
}
}
// compress the square to a point
if (is > surf->extents[0])
is -= surf->extents[0];
else if (is > 0)
is = 0;
if (it > surf->extents[1])
it -= surf->extents[1];
else if (it > 0)
it = 0;
if (is * is + it * it > dist2)
return;
if (surf->dlightframe != r_framecount) {
surf->dlightbits = 0;
@ -149,7 +137,7 @@ mark_surfaces (msurface_t *surf, const vec3_t lightorigin, dlight_t *light,
dist = PlaneDiff(lightorigin, surf->plane);
if (surf->flags & SURF_PLANEBACK)
dist = -dist;
if ((dist < -0.25f && !(surf->flags & SURF_LIGHTBOTHSIDES))
if ((dist < 0 && !(surf->flags & SURF_LIGHTBOTHSIDES))
|| dist > light->radius)
return;