Ryzom

You should check with your lawyer to have legal answer.

But what I can tell is that you can use Ryzom assets in a commercial project if you follow the licence.

I'm not sure for the link between a texture and a model. I think we need to ask CC expert.

Whatever you make, created using the ryzom's assets must be released, that includes piece of codes you have added to your server/client source.

IF you created the artwork, assets and/or 3D figures, then you are free to keep that on closed license.
You created it, its yours to decide if you want to share it with others.

For what I understand, you want to use the ryzom's 3d models and the assets, you would have to make those available to everyone.

Souga,

I'd say that vl's advice is sound - approach your lawyer for specifics if you have a serious question. It is better to make this determination now that to find out later the hard way.

Based on non-lawyer conversations with other people even though your new texture is an 'original' artistic asset it must be created/mapped to the UV coordinates of the Ryzom asset thus presenting a new artistic asset derived from a CC-BY-SA asset. Thus your texture would have to be released under CC-BY-SA. Beyond the attributions and sharing derived artistic assets there is no commercial limitation to using the Ryzom assets. Freedom of use whether for personal/hobby or commercial is a core tenant of Open Source and Free Software.

In my personal opinion (disclaimer: I'm not an employee of Winch Gate or affiliated with them in anyway) I do not think that it is very moral to decidedly use Free artistic assets and then seek a way to subjugate the license. This blatantly violates the very idea of CC licensing - that very crucial 'SA' clause, which stands for 'Share-ALike.' So why dip your hand into the free-penny tray and never give back?

Thanks,
sfb
/s