In my scene I have couple mesh lights, and they produce high amount of noise.
Unfortunately due to their shape they cant be replaced with normal lights.
I’m trying to find the most optimal way to render them. So far the most acceptable way is render with high sample count with traditional path tracing option:
I also experimented with Branched Path Tracing, and below result rendered with 128 AA + 1 all - took 50% less time than above PT with 1024 samples. The only thing that I’m not happy with is how mesh light are sampled - you can see it in how the brightest light is distributed - in BPT below there is a lot more noise. That said I tried to increase Mesh Light samples in BPT but it doesn’t do much aside from increasing rendering time.
Does anyone know how to deal with mesh light sampling - either in PT or BPT?
Thanks for any help.