Looking for the most simple "skybox"

[Phil Deakins]

Maybe that would work, but I don't think it would satisfy the OP's "most simple" criteria  

[Kelli May]

I tried Bree's 6 prim convex hull solution, and it turned out to be a very functional (and enormous) space. Six flattened boxes arranged as the sides of a 30m cubes, linked, then set as convex hull. Comes in at 3 LI, with no weird physics or camera issues and 6 independently texturable internal faces.

You even can hollow individual prims for windows on any of the walls without increasing the LI, although because of the convex hull properties, the holes only let light through, not avatars.

 

[Phil Deakins]

It's now 4 days since the OP asked the question and he hasn't been back or, if he has, he hasn't had the courtesy to say thank you for the suggestions. I seriously dislike that sort of rudeness.

[Pussycat Catnap]

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Phil Deakins wrote:

Maybe that would work, but I don't think it would satisfy the OP's "most simple" criteria

 

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Why Not?

Its as simple as you can get - a single object.

Will have to try to remember to test that.

 

[Phil Deakins]

Since the OP asked the question, I assume that he isn't all that used to building, so creating an object outside SL would probably not be so simple for him. It wouldn't be simple for me either  That's my thinking abyway.