Some NXS/NXZ models looks dark, without texture

[bugracoskun]

Hello,
I have big obj file (approximetly 1,25 GB with textures). I convert to NXS and NXZ file via nxsbuild.exe.

When I load the model on the screen, the model is observed as black after a certain zoom level. When I zoom out, the texture becomes visible again. I tested different obj models. I don't have any problems with smaller size data. Why does this problem occur? How can I fix ?

vxsviewer:

localhost:

[ponchio]

Hi, it's a bit hard to tell what's happening, could you send me the dataset? It might be that the textures are big and it might depend on the parametrization: nexus do not reparametrize the texture, and depending on the parametrization it can be quite a waste of texture space.

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On Tue, Jun 14, 2022 at 10:37 AM Buğra Coşkun ***@***.***> wrote: Hello, I have big obj file (approximetly 1,25 GB with textures). I convert to NXS and NXZ file via nxsbuild.exe. When I load the model on the screen, the model is observed as black after a certain zoom level. When I zoom out, the texture becomes visible again. I tested different obj models. I don't have any problems with smaller size data. Why does this problem occur? How can I fix ? [image: image] <https://user-images.githubusercontent.com/45716038/173532904-fee1fe0e-7799-46d8-aa33-0d8f42159398.png> [image: image] <https://user-images.githubusercontent.com/45716038/173532985-72fcd9f5-15fa-42c3-b33e-37952b5b2869.png> — Reply to this email directly, view it on GitHub <#142>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAUDV22LANB6JYLBLBR2PMTVPBADHANCNFSM5YW26CFQ> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[bugracoskun]

Of course. I am sharing the model.

Here is the link: https://drive.google.com/file/d/1FXaDm8OomcqStr3mEZJIbM7Jhsz-713Y/view?usp=sharing

Thanks !

[cignoni]

I see that the model has a very low geometry resolution (just 170k faces) and a huge set of highly fragmented, badly packed textures (70 png with 16 8k x 8k files)
Just processing the model with the texture defragmentation filter inside meshlab with default params reduces it to 11 textures with no loss of quality.