Wasn't it Stefan Viljoen who wrote:
>Mike Williams spake:
>
>> Wasn't it Stefan Viljoen who wrote:
>>>Joanne Simpson spake:
>>>
>>>> found these lovely bubbles on the way to something completely different
>>>
>>>Rendering time? I'm busy with something similar, and it as been running
>>>1000+ hours...
>> 
>> Have you read my bubbles tutorial?
>> 
>> There's a trick that can increase the rendering speed of bubbles by a
>> factor of about 60 if your slow method involves taking the difference of
>> a large number of bubble objects from inside a transparent container.
>> 
>> http://www.econym.demon.co.uk/holetut/holes3.htm
>
>Thanks Mike! I'll take a look.
>
>However, mine is mostly due to refelections, I think...

Yes, but if you're getting inefficient bounding, it slows down the
tracing of the reflected ray too.

-- 
Mike Williams
Gentleman of Leisure

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