1) I import object, it makes material, assign textures, etc...OK
2) I put model to the world, I can for example change specular strength without any problem, it changes in the world instantly
3) Then I decide, to add normal and bump map. I do it, but no change, until I resave the mesh in model editor (model editor reacts on the change instantly).

Bug? Is there some better way how to refresh it in in the world?

Perhaps the model vertices only have a tanget and bitangent set when a normal maps is applied. In which case, the model would need to be resaved... or perhaps I have no idea what I'm talking about.

Yes, it's mostly due to lack of vertex tagents/binormals, which are not generated if they are not needed (to save space).

(12-28-2011 10:25 PM)Esenthel Wrote:  Yes, it's mostly due to lack of vertex tagents/binormals, which are not generated if they are not needed (to save space).

Thanks. Good to know.