OctaneRender™ 2020.2 RC6

Wed Dec 23, 2020 9:49 am

Hi all,

This is the 6th and hopefully last release candidate build of Octane 2020.2. Note that this is is still not a production build so please do not use this for production purposes.

This release includes all features which will be part of the final 2020.2 stable release. This includes fixes from issues you reported in previous builds as well as some functional updates according to your feedback.

Should you find any issues with this release please report using this thread so we can make sure we provide you with the best feedback.

Make sure to use a NVIDIA Studio driver with version at least 456.38 on Windows or 455.23 on Linux to use this version. No driver updates are required for macOS 10.13 (CUDA).

This version supports the new NVIDIA Ampere architecture on Windows and Linux. Kepler cards with compute model lower than 3.5 are just supported on macOS.

Changes since OctaneRender 2020.2 RC5:

Improvements:

Added blend mode Stamp to the composite texture node.
Tweaked appearance and naming of the blend modes of the composite texture node.
Added support to import RGB/RGBA vertex attributes from Alembic files. Be aware that the alpha component of RGBA attributes is discarded as in Octane, textures only can produce a spectrum, an RGB color or a greyscale value.
Added option to enable/disable imaging and post processing to the render and image AOV output nodes.
Added alpha value to color AOV output node.
Added additional entries for info passes that can be normalized (under Info passes normalized) to the render AOV output node.

Bugfixes:

Fixed issue causing multilayer materials not being sampled correctly when using dirt when RTX is enabled.
Fixed layer opacity not affecting the diffuse contribution in direct light calculation which affected the direct diffuse AOV and the denoiser (see viewtopic.php?p=393388#p393388).
Fixed network render nodes failing with scenes that contain composite texture nodes.
Fixed render stall caused by using RTX + wireframe pass + layered material.
Fixed render fail caused by the denoiser running out of GPU memory.
Fixed nested dielectric not entering the medium while exiting from a higher priority surface when there are more than 1 entry in the priority list (see viewtopic.php?p=393990#p393990).
Fixed transparency issue with meshes showing up inside doubly nested specular material meshes.
Fixed universal material not rendering the correct BSDF type when we have a single specular BSDF lobe.
Fixed rendering of the gradient texture if the interpolation mode is constant (see viewtopic.php?p=393698#p393698): The problem was that if the input texture has exactly the value of a control point the gradient texture was still evaluating to the color of the next lower control point.
Fixed the handling of normal maps with the channel inverter texture node (see viewtopic.php?p=394003#p394003).
Fixed evaluation of Input A and Input B of the comparison texture, if used in the normal map channel.
Fixed evaluation of the composite texture when used in a normal channel.
Fixed non-deterministic placement of chaos texture which depended on the GPU architecture.
Fixed direct lighting in scenes with meshes that have more than 1 emitting material (see viewtopic.php?p=394149#p394149).
Fixed a bug where the post processing is not applied to Output AOVs if the post processing pass is enabled.
Fixed saturate to white settings for output AOVs.
Fixed file name label not being initialized correctly for script components in the node inspector.

Wed Dec 23, 2020 11:41 am

This version crashes in every scene I've tested as soon as it start the denoising.

Wed Dec 23, 2020 2:25 pm

Zay wrote:This version crashes in every scene I've tested as soon as it start the denoising.

Will look into this immediately in case there was some issue that QA didn’t catch in the deployment, what system/driver config are you on?

Wed Dec 23, 2020 2:27 pm

Goldorak wrote:what system/driver config are you on?

Windows 7. Driver 460.79.

Beppe OctaneRender™ Italia Blue Sky · Wed Dec 23, 2020 3:01 pm

Hi Zay,
AI Denoiser is working correctly here, under Win 10.
Can you try with a different driver version?

ciao Beppe

Wed Dec 23, 2020 7:26 pm

Zay wrote:
Goldorak wrote:what system/driver config are you on?
Windows 7. Driver 460.79.

I can't reproduce any issues with the denoiser. I tried on Windows 10 (using Pascal, Volta and Turing GPUs) and 7 (using Maxwell, Pascal and Turing GPUs). It works as expected in all cases. The Windows 7 computer has the driver 456.55 installed.

When you say it crashes, does the application/process crash or does rendering fail? Which CPU do you've got?

EDIT: I just installed driver 460.89 on the Windows 7 PC and the denoiser still works. So no idea what might the problem here.

Thu Dec 24, 2020 12:04 am

There is something wrong with the Reflection Pass with the Hair Material. Its same in 2020.1.5

: Hair Material

: Metallic Material

Thu Dec 24, 2020 1:28 am

abstrax wrote:EDIT: I just installed driver 460.89 on the Windows 7 PC and the denoiser still works. So no idea what might the problem here.

I did some more tests this morning and think I found the problem. If I disable "Denoising" in preferences for my GTX980Ti GPU, it does not crash. I can render with the GTX980Ti but I can not use it for denoising.

I also installed driver 460.89. Same problem. It will crash if I use all GPUs for denoising. But it renders and denoising fine in previous versions of Octane, so something seems to be changed in this version that breaks denoising for GTX980Ti.
My CPU is i7 3.4GHz 4930K Ivy Bridge-E.

The crash happens at the same time denoising kicks in:

Thu Dec 24, 2020 2:38 pm

I used to have the same problem with prior versions of octane and denoiser. My computer would literally black screen as soon as the ai denoiser kicked in. Believe it or not it was due to the power supply being less than ample. I replaced my power supply with one a few hundred watts more powerful and the denoiser works.

When I swap the power supply back it would crash again.

Hope this helps.

Thu Dec 24, 2020 2:46 pm

hgarrou wrote:I used to have the same problem with prior versions of octane and denoiser. My computer would literally black screen as soon as the ai denoiser kicked in. Believe it or not it was due to the power supply being less than ample. I replaced my power supply with one a few hundred watts more powerful and the denoiser works.

When I swap the power supply back it would crash again.

Hope this helps.

If I render with only the GTX980Ti, it does the same. And it wouldn't explain why every other version works than this one.