Generate UV Light Maps
Unreal Engine can auto generate Light Maps UVs using the first UV map of you mesh.
If your mesh don't have UV map you need create one.
You can create the UV map at hand or use "Smart UV Project" tools for generate it. "Lightmap Pack" is not recommended.
Here three UV Maps for light map use, from left to right: hand made, Smart UV Project and Lightmap Pack.
(You can use Right click -> Open in new tab)
| Hand UV Map | Smart UV Poject | Lightmap Pack |
|---|---|---|
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Generated light map uv by Unreal Engine with min res at 128:
| Hand UV Map | Smart UV Poject | Lightmap Pack |
|---|---|---|
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Result with CPU Lightmass, static lights and 128px res:
| Hand UV Map | Smart UV Poject | Lightmap Pack |
|---|---|---|
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Result with CPU Lightmass, static lights and 512px res:
| Hand UV Map | Smart UV Poject | Lightmap Pack |
|---|---|---|
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- UE Docs: Generating Lightmap UVs
- UE Docs: Understanding Lightmapping in Unreal Engine
- BFU Docs: UV Maps
- BFU Docs: Light Maps
- For community support and discussions, join the discord BleuRaven Side Projects.
Download: