Le_Forgeron <jgr### [at] freefr> wrote:
> They are used for big picture to avoid taking too much valued ram.

  All the previous versions of povray had it easy: They simply had to keep
two lines of the image in RAM (the current one and the previous one, for
antialiasing). All the others could be written to the final image file as
they were rendered.

  No more in 3.7. Multithreaded rendering means the image can be calculated
in any order, so writing-and-forgetting already rendered parts is much more
complicated.

-- 
                                                          - Warp

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