Same weak GI to new OpenPBR material / .ass file updated including

[Suppybird.kingdom]

* The problem :

https://forums.autodesk.com/t5/arnold-general-rendering-forum/a-good-solution-for-arnold-s-weak-gi/t...

I think this is GI algorithm problem, not about shader

This is the file including : .ass, .c4d, .alembic. Please check this.

https://drive.google.com/file/d/13ZVTzaM68Nwr4pIoa3Ts-A8C1BMbh17v/view?usp=sharing

Thank you so much !

[thiago.ize]

Hi,

Jamie, the author of this paper you cite, is on the Arnold team. You can try this out with the OpenPBR surface shader that was introduced in Arnold core 7.3.3.

As for the issue you're reporting, I think it's unrelated and could be solved even in older versions of arnold by adjusting your settings. Which setting I can't immediately say since I don't have access to your scene.

[Suppybird.kingdom]

I think this is GI algorithm problem, not about shader

This is the file including : .ass, .c4d, .alembic. Please check this.

https://drive.google.com/file/d/13ZVTzaM68Nwr4pIoa3Ts-A8C1BMbh17v/view?usp=sharing

Thank you so much !

[Suppybird.kingdom]

I think this is GI algorithm problem, not about shader

This is the file including : .ass, .c4d, .alembic. Please check this.

https://drive.google.com/file/d/13ZVTzaM68Nwr4pIoa3Ts-A8C1BMbh17v/view?usp=sharing

Thank you so much !

[thiago.ize]

Thanks for posting the scene. I gave it a quick try and it looks like this is due to the wrong output colorspace being used. I changed the driver_jpeg color space back to "auto" with the following kick flag:  -set driver_jpeg.color_space auto   and it now looks much better. The arnold renders still look warmer than the other renders and the shadows don't exactly match, so I suspect if you are able to get the sun/sky intensity, position, and color the same in all renders that they will be even closer matches.

original 

jpg color_space auto