What I'm trying - and evidently failing - to get across is that you will never accomplish your goal with these tests.  Is it hard to load a cube or sphere primitive into your scene?  You don't have to do this, but you will get wonky results and they will differ greatly from what you'll get when you use GI in a way that makes sense.  You're basically running a blood test on distilled water.

I'm not trying to give you a hard time, if you really just enjoy rendering naked people hanging in empty space it's all good.

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