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Add pad checks for visplanes; invalidate invalid columns from visplanes (visplane renderer and column renderers don't speak exactly the same language).

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The visplane portal top boundary offset has been restored since all known bugs involving it have been fixed.
This commit is contained in:
Nev3r 2019-06-06 11:26:13 +02:00
parent f0b79697e5
commit ebe0586993
1 changed files with 13 additions and 1 deletions
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14
src/r_portal.c
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@ -200,7 +200,14 @@ static void Portal_ClipVisplane (const visplane_t* plane, portal_t* portal)
for (i = 0; i < end - start; i++)
{
portal->ceilingclip[i] = plane->top[i + start];
// Invalid column.
if (plane->top[i + start] == 65535)
{
portal->ceilingclip[i] = -1;
portal->floorclip[i] = -1;
continue;
}
portal->ceilingclip[i] = plane->top[i + start] - 1;
portal->floorclip[i] = plane->bottom[i + start] + 1;
portal->frontscale[i] = INT32_MAX;
}
@ -220,6 +227,11 @@ void Portal_AddSkybox (const visplane_t* plane)
mapheader_t *mh;
portal_t* portal;
// Visplanes have 1-px pads on their sides (extra columns).
// Trim them, else it may render out of bounds.
if (end > viewwidth)
end = viewwidth;
if (!(start < end))
return;