On 2021-01-04 10:18 AM (-4), Kenneth wrote:
> 
> Cousin Ricky wrote:
>> With blurred reflection on the floor.
> 
> Nice!

Thanks!

> How did you get those blurred reflections? My few attempts over the years to use
> micro-normals have always resulted in Moire patterns that I could not eliminate.

I rendered 10 frames, with each frame having the micronormal translated 
and rotated randomly, then averaged the 10 frames.

In retrospect, the rotation was probably overkill.  My initial trials 
with translation only showed what looked like a blend of sharp 
reflection and blurred reflection, and since I have noticed regular 
patterns in the bumps normal, I figured rotating the normal would help 
the blurriness.  Rotating did not help, but reducing(!) bump_size did. 
Evidently, there is some sort of phase transition, somewhere between 0.1 
and 0.5, above which increasing bump_size led to poorer results.  The 
final scene uses bump_size 0.05.

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