I am currently working on a rendering project where my workflow is Rhino 5> Unreal Engine 4 as FBX.
Unreal Engine 4 reads an object’s mapping channel 1 as its texture map and mapping channel 2 as its lightmap.
I understand that Rhino supports multiple mapping channels in its Texture Mapping however I’m having trouble managing the mapping channels.
After I create a simple box mapping for the texture mapping channel (1), I create a surface mapping for the lightmap mapping channel (2), and edit it in the UV editor to make sure the islands have enough “padding” but UV editor only allows me to edit the first mapping channel. How do I edit other mapping channels within the UV editor?
I’ve also attempted creating my lightmap mapping channel first and use the “Edit mapping channel” to change it to channel 2 but everytime i edit the mapping channel the UV resets to its original state before unwrapping. Is this a known bug? Or am I just doing it wrong? I’ve tried this on both Rhino 6 and Rhino 5 and the results are the same.
If anyone has experience using Unreal Engine and Rhino, could you share some tips on your workflow? I’m trying to avoid using any other program such as 3dsmax or blender to unwrap the UV’s before importing over to Unreal Engine.
How do i pick a specific mapping channel to edit in the UV Editor?