Diffeo: Problems with instances
DrGonzo62
Posts: 410
Hi,
I'm trying to import the DAZ Road to nowhere asset into Blender, but I'm getting artifacts after the import.
This assets uses instances and I've noticed problems with importing such assets before, like some of the instances don't line up correctly.
The other asset I'd noticed that with is Along the Prom. Some sections of the street don't line up and I had to move them into the right spots.
Is there a way to fix this? With Road to nowhere, I can't figure out how to get rid of the lighter rectangles.
Thanks!
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That is a viewport preview, that may have artifacts of various kinds due to the limited precision, especially for very large scenes as outdoor environments. Does that happen in rendering ?
edit. Other than that, scenes are mainly intended to be imported as unmorphed, not dbz, unless there's specific reasons. May be that's your issue with instances.
edit. Also I see the scene has presets for iray and 3delight, of course make sure to get the iray presets.
Hi Padone,
Yes, unfortunately so.
Second image was rendered in DS.
Third one is Along the prom before I repositioned some of the embankment segments.
Nope, I don't get those white lines in the street, not in rendering nor in the viewport. Test scene provided. You can try my scene or share yours.
my steps:
1. import the test scene and render
The issue with promenade is because it uses morphs, so can't work with unmorphed. For scene using morphs you can import as dbz, then it works fine.
Wow! I'm still getting those squares using your test scene. Weird!
I'll have to investigate this further. Thanks for checking!
And yes, now that you mentioned Along The Prom - I do remember realizing that those segments where placed using morphs.
I'll try dbz next time I run into something like that.
Hi Padone,
Does it look like the Road material from my import is missing the default UVs?
I can't tell.
Yes it looks so, it is imported fine on my side. But this could be because we have different daz libraries. I use the standard "my library" for scenes to be portable. If you made custom libraries then make sure they're all mapped on the blender side. Look at the log for errors or missing files.
window > tggle system console
I do have a couple "remove default uvs" in mine, but then the scene loads fine.
update. Asked Thomas about "remove uv".
https://github.com/Diffeomorphic/import_daz/issues/53
update. solution.
Found the culprit. Apparently has nothing to do with the missing uv set, at least on my side as I don't have any. It happens to me when I use 8K textures, that I usually don't as I set simplify for 2K. The culprit is the bump distance in the "road-01" material that is different from "road-02" and "road-03". At 2K texture the bump is smoothed so it doesn't appear much, at 8K textures with full bump the white bands appear.
fix. set the "road-01" bump same as "road-02" and "road-03".
why is that. Unfortunately the bump in iray depends on the pixel density. The addon tries to compute that at best, and usually does a good job especially for figures, but in this case it fails. So we need to adjust the bump by hand.