If you set the number of threads higher then the number of CPUs you got (HT CPUs count for 2) then CINEMA will be a bit slower. However sometimes it’s nice to see more parts of the picture rendered at one time so you can spot errors earlier on.
Well, do you know what I’m still missing from the old days when I used Bryce?
Here’s how the rendering works there, if you don’t know anyway…
It always starts with big image blocks, rendering only a fraction of the image pixels - one in each 64 x 64 block, if I remember correctly. Then it renders one pixel in each 32 x 32 pixel block, an so forth…
This is incredible valueable to spot an error as early as possible. Maybe there are performance reasons not to do this - I really don’t know. However, if it wouldn’t matter, or if the impact is not to massive, this might be a nice alternativ rendering mode.
Maybe in R9.1?