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1. Multiple UV channels using texture coordinate node?

   

   Topic by Chandler · Jun 2011 · Home› Unreal Engine

   Hey dudes, Attempting to learn this formidable program right now (Still a noob) and I was wondering if anyone could help me out. I want to add an emissive map to my model in UDK, and from what I have read emissive maps are most efficient when using an alternate set of UVs that emphasize what will be emitting light, and…

2. Re: Multiple UV channels using texture coordinate node?

   

   Reply by sprunghunt · Jun 2011 · Home› Unreal Engine

   making the building as one huge static mesh like that is a bit of a waste of memory... other advantages of making the lamps as a single object is that you can use them to emit light. And you could put them in physics or animate them blowing using matinee.

3. Re: Multiple UV channels using texture coordinate node?

   

   Reply by Chandler · Jun 2011 · Home› Unreal Engine

   tharle, you magnificent bastard! Using FBX worked like a charm! I guess ase's can only handle 2 uv channels, I'll definitely keep that in mind for the future... in any case, thanks a bunch man! :D

4. Re: Multiple UV channels using texture coordinate node?

   

   Reply by tharle · Jun 2011 · Home› Unreal Engine

   two materials on the same object is quite an expensive option. you could make them a seperate mesh but then if you wanted to say copy things around then you'd have to make sure things lined up everywhere etc. could just do it like you said though - have you tried importing as an fbx rather than using actor x? i just tried…

5. Re: Multiple UV channels using texture coordinate node?

   

   Reply by Chandler · Jun 2011 · Home› Unreal Engine

   Thanks Dan! I had considered option a, it just seemed like a waste to use such a large map for such a small detail. Though I hadn't thought about making the lights a separate texture... I may go ahead and do that.

6. Re: Multiple UV channels using texture coordinate node?

   

   Reply by Chandler · Jun 2011 · Home› Unreal Engine

   Yeah, it should work the same with Maya, right? UDK channel 1 is already in use for my secondary lightmap UVs, so UDK channel 2 is my 3rd channel in Maya, which has the emissive UVs. :( Although I haven't set any parameters in Maya, I just assumed it would take the first, second, and 3rd UV channels on the model and assign…

7. Re: Multiple UV channels using texture coordinate node?

   

   Reply by ParoXum · Jun 2011 · Home› Unreal Engine

   If you set your second UV channel to 2 in max you must set the parameter 1 in UDK because it starts to count from 0. Might solve your problem

8. Re: Multiple UV channels using texture coordinate node?

   

   Reply by Dan! · Jun 2011 · Home› Unreal Engine

   i dont believe the way you're going about this will work. I would either a: use the UVs from channel one- and use either a lower resolution texture for the emissive or embed the emissive map into the alpha channel of one of your textures. b: assign 2 materials to your object- one for the building, one for lights. The…

9. Re: Multiple UV channels using texture coordinate node?

   

   Reply by ParoXum · Jun 2011 · Home› Unreal Engine

   Yeah sorry, I read through your post too fast and didn't pay attention to the real problem.