burlen burlen.loring at gmail.com
Wed Nov 6 11:34:44 PST 2013

When I build osmesa with --with-osmesa-bits=32 I notice that I get 31 
bits by way of the compile line define -DDEFAULT_SOFTWARE_DEPTH_BITS=31. 
What's the story with the number 31? Is 31 bits really better than 32?

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