FreeGLUT library ported to PS Vita using Pigs-In-A-Blanket
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rkrolib 9c070e4f9b Altered the way that the {random} value (from 0..3) is chosen.
Previously, it picked out two adjacent bits in the result of rand().
Unfortunately, these adjacent bits (at least on NetBSD) have a certain
amount of dependance.  After a period (perhaps a thousand or so?), it
starts to repeat the pattern of those two bits.  (I think; I haven't
actually tested that directly.)  This presumably is locking it into a
an an N-way attractor on the "snowflake", such that if you zoom in a
ways, you will start to see some spots *quickly* are colored, and
others are *never* colored.

What I've done now is to pick up two widely-spaced bits in a single
rand() call.  (Perhaps we would do as well to pick up something like
bit #16 from two consecutive rand() calls?)  These widely-spaced bits
have a lower statistical dependance on one another (if I can get away
with using that term for an arithmetic operation; though since stats
has more to do with sampling and less to do with true randomness, I
may be safe).

The net effect, at leats on NetBSD, is far better snowflake if you zoom
in on it.


git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@324 7f0cb862-5218-0410-a997-914c9d46530a
2003-11-08 01:56:45 +00:00
freeglut/freeglut Altered the way that the {random} value (from 0..3) is chosen. 2003-11-08 01:56:45 +00:00
.gitattributes Deleted 3 files (again?) from CVS, on John's request. Old/obsolete 2003-11-03 21:28:54 +00:00