by StarFire » 03 Jul 2015, 20:23
The cubemap format is not currently supported for Skylines skyboxes. I think I have seen some utility software out there that converts this format to single images, maybe the cubemapgen app on the asset store may do this. Although it is generally for converting images to cubemaps, but worth checking it out as it has many functions related to, and working with cubemaps, you may get lucky

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