wallace wrote:funk wrote:Can someone explain what's going on with sheen?
Why does it draw over reflections on the glossy material, but only draws on the diffuse part of the metallic material?
I am not exactly sure what you meant here. But basically the reflection from sheen is a cosine lobe oriented towards the direction that is 90 degrees from the viewing angle, and it peaks at this grazing angle. The roughness parameter controls how spread out the lobe is, just like your specular BRDF model, it can look really diffuse when you have high roughness, and you can have really sharp sheen like satin cloth for low roughness.
wallace wrote:funk wrote:Which leads to another question... Why dont we have sheen on the diffuse material? This would be nice for velvet/fabrics
Is there any reason why you cannot achieve this effect with the metallic node and glossy node? You can decrease the glossiness and increase sheen.
funk wrote:In fact I wish we just had a single material that combined everything.
roeland wrote:I can confirm there's an issue with dispersion. This will be fixed in the next release.funk wrote:In fact I wish we just had a single material that combined everything.
Yes we know — you're not the first one to make this point.
In the meantime we can try to approximate some common cases with node graphs. Does this work for a metallic + diffuse with dielectric mix?
Roeland
Renart wrote:Thanks for all the fixes!
The displacement works great now and the Volume passes are very useful.
I can't wait for the next release. Any ETA?
Master wrote:Hello we have a machine running with win 10 64 , C4D R19.053.
We have two titan XP and a Titan V used as display waiting for it to be supported in Octane render .
I was running octane render 3.08 test 6 .
This morning I updated the cuda to 9.1 and installed 3.08RC1.
I can't select the titan V in octane settings devices, the card is unselected when I close the settings window.
Then I updated the graphic driver to the last provided by Nvidia .
Same issue.
Another issue with the the 3.08 RC1 is that I want to preview a scene with many polygons it does not render. It takes 2 minutes 30 with 3,08 test6 and never computes with the 3,08RC1 except if you remove polygons computing.
Thanks for your help.
andw wrote:There is still some weird issue (values clipping / saturation ?) with environment HDRI with high dynamic range
( https://hdrihaven.com/hdri/?h=flower_road )
Moreover, the result differs in 3.08 RC1 version
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