OctaneRender™ 2020.1 XB1 [superseded by 2020.1 XB2] Tweet

[Elvissuperstar007]

your model has bad eyes

[Lewis]

Hi DEVs,

First of all thanks for BUG fixes form XB1 (both of my bugs are fixed now )

Although I have some questions about Hosek-Eilkie Sun system,
For better explanation I'm sending short video to show the problem/confusion so maybe someone from DEVs could jump in and explain what is going on there, why does new sun model so drastically change reflections in my scene.
Is this new behavior correct ?

Here is the video and ORBX scene and video.

Thanks and Happy NY .

[karu]

Hi DEVs,

First of all thanks for BUG fixes form XB1 (both of my bugs are fixed now )

Although I have some questions about Hosek-Eilkie Sun system,
For better explanation I'm sending short video to show the problem/confusion so maybe someone from DEVs could jump in and explain what is going on there, why does new sun model so drastically change reflections in my scene.
Is this new behavior correct ?

Here is the video and ORBX scene and video.

Thanks and Happy NY .

Hi Lewis,

Thanks for the explanation of the difference you're seeing - the scene and video are really helpful. I think the result you're seeing is correct. The reflection is dim, but visible on a black background. On a bright sky background the reflection is overwhelmed by the brightness of the sky. This doesn't appear to be related to the daylight model chosen - I can get the same reflection effect using the Octane daylight model if I adjust the ground angles so that the relevant part of the sky is black. I can also see the reflection by changing the glass railing to a diffuse black material.

[Lewis]

Thanks for answer karu, I suspected it might be ok due hemisphere vs full sphere but i just wasn't sure. Thanks for explanation/confirmation.

[andrey.krivulya]

Hi @andrey.krivulya

Your issue has been fixed. Unfortunately it didn't make it into 2020.1 XB2 but it will be included in the next build.

For now just so you are aware this was an issue related to autofocus, so disabling it from your scene should not fix it completely but mitigate it significantly.

Thank you.

Hi, @mojave

Thank you for this fix.

[mojave]

OTOY team, can you please post a sample file for those Vectron Volume screenshots? I can't figure out how its done.

I know you guys are probably really busy, but is it possible to get a sample file showing us how Vectron Volumes are created?

We have updated the section regarding vectron volumes in the initial post with Lua script you can use as reference.

[funk]

OTOY team, can you please post a sample file for those Vectron Volume screenshots? I can't figure out how its done.

I know you guys are probably really busy, but is it possible to get a sample file showing us how Vectron Volumes are created?

We have updated the section regarding vectron volumes in the initial post with Lua script you can use as reference.

Thanks. I don't think anyone could have come up with this without an example script I hope this process will be simplified with a built in node that converts vectrons to volumes.

I don't even think my plugin (for modo) supports lua scripts

[jimho]

Question ...

Does NVlink work with 4 cards? Meaning a pool of 2 x 2 with total 22GB memory avaiable?

Can anybody confirm?

I can confirm that NVlink memory pooling doesn't work even for one pair at the moment. It probably works only for Quadro and Titan RTX. It doesn't work for any other Geforce card including 2080Ti.

If your scene extend memory of one card and you have disabled Out Of Core - Octane render will fail with out of memory error.

We have identified the cause of this issue and are working towards a fix. It should be available in a future build of 2020.1 (likely not XB2 though), and a future build of 2019.1.

Regarding 4 cards, currently we only support memory pooling with pairs of cards (but you can have multiple pairs). So you could pool memory between cards 1 & 2 and between cards 3 & 4, but you can't have a single pool with cards 1, 2, 3 & 4 all together.

Dear Karu,
It seems only one pair of 2080ti sli is allowed by nvidia, the second pair does not appear in the nvidia control panel at the same time with the first pair,
does that mean octane may jump over the nvidia control panel to active the both nvlinks?

only one pair of sli is actived at the same time

many thanks,
Jim

[mojave]

It seems only one pair of 2080ti sli is allowed by nvidia, the second pair does not appear in the nvidia control panel at the same time with the first pair,
does that mean octane may jump over the nvidia control panel to active the both nvlinks?

NVidia drivers at the time of writing this allow just a single pair of NVlinked cards for GeForce series, more than one pair is allowed just for Quadro cards.

[jimho]

It seems only one pair of 2080ti sli is allowed by nvidia, the second pair does not appear in the nvidia control panel at the same time with the first pair,
does that mean octane may jump over the nvidia control panel to active the both nvlinks?

NVidia drivers at the time of writing this allow just a single pair of NVlinked cards for GeForce series, more than one pair is allowed just for Quadro cards.

Thanks for the explanation