Editing Lightmaps At Edit Time

Unity Engine
1

Hi all,

I’ve written an editor script which edits one of the beast lightmaps, colouring an object red in the lightmap.

To colour the object it uses:

LightmapSettings.lightmaps[lightmapIndex].lightmapFar.SetPixel((int)x, (int)y, Color.red);

Then applies the texture with:

LightmapSettings.lightmaps[lightmapIndex].lightmapFar.Apply();

This works great, the object is now red and in the lightmap preview it’s clearly red too.

However as soon as I hit save, the lightmap reverts to how it was baked by Beast. Any idea on how I commit these changes onto the actual .exr file in Unity?

2

needs an Unity - Scripting API: Texture2D.Apply after changing maybe?

3

I already do that :slight_smile:

I’m trying now to save the lightmap out as a second texture, but because the exported texture doesn’t have a texture importer I can’t flag it as a lightmap and it comes out too bright.