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Unreal Development Kit Beginner’s Guide by Richard J. Moore

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Time for action—lightmaps

  1. When you bake lighting on your scene, the lighting data gets stored into one or more images called lightmaps. Open up an existing scene that's a simple CSG room with a light in it, as shown in the following screenshot:
    Time for action—lightmaps
  2. Save your scene (call it DM-LightmapTest.udk) and bake lighting. Now look in your generic browser, and you'll see a package named DM-LightmapTest. If you select it, you'll see four texture images in it. These are the lightmaps that got baked for your cube. I won't go into why there are four of them—the reasons are technical and they won't affect your work. If you create a bigger level, the lightmaps will be ...

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