Proxy material (UV) not working.

[Hugh]

Hi there.

I ran into a problem with the custom build and proxies.

I created a Proxy from a mesh, with proper UV's and an image mapped to them. In the original mesh, the image showed fine, but when I tried to render the proxy (with the same material and image, of course), it was displayed only with the material color, but not the image (as if it was not assigned). This occurred while using the VB custom build 2.69.1. For good measure, I updated to the latest custom build and start-up script (bdancer-vb25-7718679.zip).

Now, with the updated software and the same scene: when I try to render the proxy, it shows the correct image (with proper UV mapping), as it should. But now the regular (Blender) objects do not show their material images (UV mapped). They look purple. I know the WIKI says the exporter is deprecated, but... is this a bug?

Just for curiosity, I used the old installation's uvwgen.py (2.69.1) instead of the latest one, and the behavior was the same as it was in the beginning: Objects had image materials (with proper UV's), while proxies did not.

Please refer to attached image, in which I used an RGB strip image mapped to both a plane and the proxy (they share the same material and both have proper UV's). The Blender object (plane) displays the image, while the proxy doesn't.

Am I doing something wrong?

[bdancer]

Could you share this scene?

[Hugh]

Here it is. And sorry for the late reply -I minimized the scene. The folder (scene) was on "c:/3d/". Perhaps you can replicate the error.

[bdancer]

Hugh, in this version named UV channels are not supported in proxy exporter, but there is a workaround.
Rename your UV layer to "1".
You could also load preview mesh for the proxy object and it will create fake UV layers with digit name.

Proxy generator in vb30 supports UV channel names.

[Hugh]

Thanks, Andrei. I will try this ASAP.

I have been very disconnected from V+B because of work. Another question: my scene is a bit complex and old (I stared it with the 2.68 custom build). What can I expect by rendering it with the Vray 3.0 Demo? I ask because I remember having gamma and material issues from one version of the demo to the other (during the last generation). I mean, the scene is almost ready to render, and I would like to preserve the behavior of the Gamma, Materials and Proxy settings.

[bdancer]

Settings are all the same, not sure there will be any difference.
But vrayblender3 build itself is very different, check the wiki - https://github.com/bdancer/vb30/wiki
There are also some scene conversion tools - hope you could convert some scenes without any issues.

[Hugh]

The workaround was successful, thanks!

My scene is still unfinished, but I'll keep working with the V+B 2.69 (better not compromise for now). I hope I can finish this soon and try Vray 3.0.

Man, you're the best.

[bdancer]

The workaround was successful, thanks!

You welcome =)