[Bf-committers] Cycles: Optimizing render speed?

Brecht Van Lommel brechtvanlommel at gmail.com
Mon Nov 19 19:00:29 CET 2018

We would like to add adaptive sampling, it's just a matter of someone
writing a good implementation which is not trivial.

On Thu, Nov 15, 2018 at 7:15 AM Kurt Weiss <fundev at kwnet.at> wrote:

> Sampling, Path Tracing:
> Samples: e.g. 70.
> Cycles renders all 70 Samples, regardless of whether the tile is
> changing or not.
> Often that's not neccessary in the main parts of the picture...
> Maybe it's a idea to add a possibility to define a threshold by
> comparing new an old images of the tile. (e.g. max. change of RGB value
> in pixels)
> Especially in areas where only background is present, the engine could
> abort sampling after one or two samples. This would save a lot of time
> at unattended rendering.
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