I’m using Blender to create art assets for a 3d engine. Currently exporting from blender to obj format.
However, the obj format only supports a single uv map, and I need two uv maps, one for texture, one for lightmap.
So as a workaround, what I would like to do in Blender is create these two uv maps and easily toggle between them for export to two separate obj files (one with the texture uv map, one with the lightmap uv map). Once I have the two obj files, I have a python script that can merge the two exported objs into my own format for use with the engine.
How do I create two uv maps in blender and easily toggle between them? In the “shading” tab I tried creating two “uv map” nodes, each going into separate “image texture” nodes, but I can’t seem to figure out how to select the different uv maps for editing in the “uv editing” tab.
(As a side note, if there is a better file format to use here instead of obj, I would love to know what it is. Should be similar to obj, relatively open standard if possible, and needs to support multiple uv maps per model.)