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Found that svn rev 8558 broke it (TDM 2.08): Revision: 8558 Author: stgatilov Date: 2 февраля 2020 г. 23:32:15 Message: 0004957. Reduce chance that close vertices would be snapped to different points in T-junctions removal. Note the T-junctions removal algorithm also serves as a generic mesh cleaner. It snaps triangle vertices exactly to each other, so that further mesh processing could work reliably. The problem is that when vertex is snapped to some grid point, its coordinate is rounded to the nearest of two snap points. If model has vertices exactly at the middle between snap points, then they get snapped into different directions depending on roundoff error. Having vertex with coordinate (2*integer+1)/64 is quite likely in a real model. The fix is to shift coordinate slightly, so that it gets rounded down in such cases. ---- Modified : /trunk/tools/compilers/dmap/tritjunction.cpp |
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Added test map to SVN: maps\test\dmap_tjunc_nhat_fence.map Added test map to SVN: maps\test\dmap_tjunc_newjob_sign.map Added test map to SVN: maps\test\dmap_tjunc_stlucia_rope.map The fence from "No Honor Among Thieves" uses custom material. When extracting test map, I replaced it with stock material using the same textures. As the result, I don't see such bloom-magnified plasma particles =) Instead I see small bright sparklies running along edges of the fence. The sign from "New Job" is also added as test map. It is the entity which has mentioned related to the original "fix" (which broke this fence): https://bugs.thedarkmod.com/view.php?id=5137#c12173 The problem is the same: sliver triangle on the top of the sign. It is even displayed as bright white line, supposedly showing the same problem as the fence. The last test map is from "Saint Lucia". It has a rope right in front of the player, which has a very sliver hole in it. It seems that the rope is composed of brushes, and I guess this hole happens due to close input vertices snapped to different hash vertices. |
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Regarding the rope: it is hardly fixable. The problem happens due to "optimize" algorithm removing collinear vertices. This algorithm works independently on every planar piece of the entity, and can remove almost collinear vertices, shifting boundary by up to 0.1. It is possible that closed triangulation becomes non-closed due to this shift, introducing sliver holes of very low width. I have no ideas how to fix it (disabling optimization would help, but is hardly an option). |
- Anonymous
