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Found 3 results

  1. Hi guys. I'm doing some tests using shader light emission based on Niels Prayer SciFi Fractal tutorial. But when I pull the values up and use just shader light emission with no other lights I see a lot of noise. I can increase the pixel samples but it increases a lot the render time. I would like to know if its possible to just increase emission light samples to keep pixel samples moderate. Thanks Myke
  2. Hello, I am working on a school project and I am using Arnold in Houdini for rendering. I would like to try deep workflow. But I have a problem with deep sample count in rendered EXRs. I am using custom ID AOVs and when trying to isolate certain objects in Nuke there are artefacts on edges (which is funny because it shouldn't happen with deep data). I think there is a problem with deep samples merging (compression) which is controlled by tolerance parameters. But modyfiing these parameters doesn't take any effect on exported EXR. When samples merging is disabled EXRs in Nuke work like expected but it drastically increases EXRs size (2gb per frame). Any ideas how to find a balance between EXR size and sample count on edges? I don't know whether it is a bug or I am missing something. I have tested it with htoa 1.3.1 and 1.4.0. I am really stuck here. merge disabled: merge enabled:
  3. Hello, How to control specular samples? My actual workflow to control diffuse/specular samples: create area light position it then turn off specular contribution and set "sampling quality" as is it in most cases then copy the same area light and turn off diffuse contribution and turn on specular contribution set sampling quality to minimum 2 without those steps I get specular flickering with displacement materials [specular noise?] and to completley remove it I would have to set global samples to 2-128 and pixel samples to 14x14. With 2 area light instead of 1 [diff and spec contributions: sampling quality increased] I have pretty clean renders with 8x8 and 1-18 global samples = quicker render. The only bothering thing is that I have 2x more lights and it takes some time to set and organize those. example: [from 0:20 to 0:22, you can see random white dots in the background].Arnold renderer [which is pathtracer as mantra is] gives you ability to set every type of sampling.
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