From the course: Unreal Engine: ArchViz Design Techniques
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Texture UVs and Lightmap UVs
From the course: Unreal Engine: ArchViz Design Techniques
Texture UVs and Lightmap UVs
- [Instructor] Whatever realtime engine you choose, UV coordinate maps are a fact of life. There's just no better way to map all the complexity of lighting and materials onto the surface of 3D geometry. There seems to be a lot of confusion surrounding texture UVs and lightmap UVs. So let's open up a Static Mesh and take a look inside. Double click on the Static Mesh here to bring up the Mesh editor. Now if you're not seeing the UV channel here already, go ahead and head up to the UV button and click on the strap down and select UV channel zero. From this button here, you can change the channel between zero and one and sometimes even more. But generally speaking, channel zero is reserved for texture UVs and channel one is for light maps. And as you can see if I change these, you'll see they're slightly different. If you look at the texture for the magazine, you'll see that it matches the UV channel zero exactly. But if we open up something like the cactus, it's not so clear. This is…
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