OctaneRender™ 2020.1 RC4 [superseded by 2020.1]

Forums: OctaneRender™ 2020.1 RC4 [superseded by 2020.1]
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Re: OctaneRender™ 2020.1 RC4 [latest 2020.1.x]

Postby Lewis » Mon Apr 20, 2020 8:47 pm

Lewis Mon Apr 20, 2020 8:47 pm
This is nice and quick update (form RC3), Thanks guys.

One thing i miss for long time is Triplanar mapping to work with Octane Displacement. Not Vector displacements but standard displacement. Vector one is way too slow and need a LOT of subdivision to get decent quality and sucks up VRAM too much for my taste.

so please can you make regular displacement working with projection/Triplanar nodes also ??

Thanks
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Re: OctaneRender™ 2020.1 RC4 [latest 2020.1.x]

Postby wallace » Mon Apr 20, 2020 8:49 pm

wallace Mon Apr 20, 2020 8:49 pm
linograndiotoy wrote:
tim_grove wrote:Why does opacity no longer work in conjunction with metallic materials?

This breaks reflection features of the OSL Raytype Contribution setups made by Calus and Milan which are REALLY helpful.


It does, but not if you set metallic to 1. Try 0.9999 or so. This is an issue that should be fixed.

This simple scene shows the issue:
Opacity_Metallic.ocs


As we set Metallic to 1, we totally lose the Opacity effect.


This is now fixed, thanks for reporting (tim grove) and providing a repro scene (lino).
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Re: OctaneRender™ 2020.1 RC4 [latest 2020.1.x]

Postby Notiusweb » Mon Apr 20, 2020 9:41 pm

Notiusweb Mon Apr 20, 2020 9:41 pm
wallace wrote:
The maximum is 8 layers (for each unique base material). Universal material operates as a maximum of 4 layers depending on what you do. Coating is one layer, sheen is one layer. If you have transmission, diffuse, specular active simultaneously, then that accounts as two layers, on the other hand if you don't have transmission, or if you don't have specular reflection, that's only two layers, and any addition sheen and coating would add one to it.

From that onwards, you are allowed to add additional layers until you reach a maximum of 8.

If you really want to challenge the maximum number of layers possible, I suggest you use the composite material. From what I see, you are adding additional diffuse layers as decals, it's probably not as important to use layered material for that as the difference with composite material is not all that much.

Another note is that in general it's advised to keep the number of layers as minimal as possible, so there's less computation occurring for extra layers.


Wallace - can I stack layers indefinitely with Composite???!!!!!
Please say YES!!!!!
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Re: OctaneRender™ 2020.1 RC4 [latest 2020.1.x]

Postby wallace » Mon Apr 20, 2020 9:53 pm

wallace Mon Apr 20, 2020 9:53 pm
Notiusweb wrote:Wallace - can I stack layers indefinitely with Composite???!!!!!
Please say YES!!!!!


Yes.

Here're the differences between layered material and composite material.

1. Composite material works like traditional mixed material, where you stochastically sample one of the layers and evaluate it.
2. The above means that you only evaluate one layer at each bounce intersecting a surface, so it's much more lightweight. The layered material evaluates the entire stack all at once to calculate the correct attenuation between layers and also combines the contribution of different BRDFs. This makes it less noisy.
3. Composite material weights the layer using a user-specified texture, you can use things like fresnel node to weight a specular material on top of a diffuse material, but this is less accurate than layered material. This is because layered material uses actual fresnel (i.e. microfacet fresnel with half vector) for actual weighting and attenuation.

So if you do things like 10 diffuse decals, then you don't really care about the accuracy of weighting of layers and attenuation, and in that case you should use composite material.
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Re: OctaneRender™ 2020.1 RC4 [latest 2020.1.x]

Postby tim_grove » Tue Apr 21, 2020 3:33 am

tim_grove Tue Apr 21, 2020 3:33 am
wallace wrote:
linograndiotoy wrote:
tim_grove wrote:Why does opacity no longer work in conjunction with metallic materials?

This breaks reflection features of the OSL Raytype Contribution setups made by Calus and Milan which are REALLY helpful.


It does, but not if you set metallic to 1. Try 0.9999 or so. This is an issue that should be fixed.

This simple scene shows the issue:
Opacity_Metallic.ocs


As we set Metallic to 1, we totally lose the Opacity effect.


This is now fixed, thanks for reporting (tim grove) and providing a repro scene (lino).


Thank you!
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Re: OctaneRender™ 2020.1 RC4 [latest 2020.1.x]

Postby coilbook » Tue Apr 21, 2020 4:14 am

coilbook Tue Apr 21, 2020 4:14 am
one of our slaves just crashes when using RC versions. Slave has 2080tis ans titans mixed with cuda error and failing kernels. The slave that has all Rtx cards 2080ti works fine
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cuda bug.jpg
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Re: OctaneRender™ 2020.1 RC4 [latest 2020.1.x]

Postby mojave » Tue Apr 21, 2020 4:16 am

mojave Tue Apr 21, 2020 4:16 am
coilbook wrote:one of our slaves just crashes when using RC versions. Slave has 2080tis ans titans mixed with cuda error and failing kernels. The slave that has all Rtx cards 2080ti works fine


What version do you use and could you please share a scene that reproduces this issue for you? We have addressed an issue causing an error like this in RC4 so it is worth trying if you haven't done so already.
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Re: OctaneRender™ 2020.1 RC4 [latest 2020.1.x]

Postby coilbook » Tue Apr 21, 2020 4:28 am

coilbook Tue Apr 21, 2020 4:28 am
mojave wrote:
coilbook wrote:one of our slaves just crashes when using RC versions. Slave has 2080tis ans titans mixed with cuda error and failing kernels. The slave that has all Rtx cards 2080ti works fine


What version do you use and could you please share a scene that reproduces this issue for you? We have addressed an issue causing an error like this in RC4 so it is worth trying if you haven't done so already.


HI
We were using RC2 since max doesnt have RC4. We also get optixpipline error. I will try to send you the scene tomorrow as PM
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bugs (2).jpg
bugs (1).jpg
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Re: OctaneRender™ 2020.1 RC4 [latest 2020.1.x]

Postby ptunstall » Tue Apr 21, 2020 4:50 am

ptunstall Tue Apr 21, 2020 4:50 am
We too are getting this memory error with a scene that was previously working in RC1(was disabled today/this weekend). I can't share the ORBX file publicly but I have a dropbox link if I could PM/email it.

GPUs that it fails on 1080/1080ti, quadro RTX 4000, titan RTX, and titan V.

We have RTX OFF.

Ours fails on both centos and windows.

We rolled back to RC2 and this appears to be working correctly for now. Nope RC2 is failing as well... Is there a way to get RC1 back online?

After thinking, this might be a volume issue. 2 weeks ago we had to do some hackery with converting an emissive(fire) VDB to a point cloud to get it to properly light a scene. It'd fail in a similar fashion or simply just stop rendering mid way through. I saw you guys had fixed similar issues in the bug fix notes so we assumed it had been fixed. Up to this point I've been using randomwalk for ALL my volumes since then except for TODAY where I switched to a standard medium. Happy to share ORBx and VDB files just need to send privately.
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Re: OctaneRender™ 2020.1 RC4 [latest 2020.1.x]

Postby mojave » Tue Apr 21, 2020 5:13 am

mojave Tue Apr 21, 2020 5:13 am
ptunstall wrote:We too are getting this memory error with a scene that was previously working in RC1(was disabled today/this weekend). I can't share the ORBX file publicly but I have a dropbox link if I could PM/email it.

GPUs that it fails on 1080/1080ti, quadro RTX 4000, titan RTX, and titan V.

We have RTX OFF.

Ours fails on both centos and windows.

We rolled back to RC2 and this appears to be working correctly for now. Nope RC2 is failing as well... Is there a way to get RC1 back online?

After thinking, this might be a volume issue. 2 weeks ago we had to do some hackery with converting an emissive(fire) VDB to a point cloud to get it to properly light a scene. It'd fail in a similar fashion or simply just stop rendering mid way through. I saw you guys had fixed similar issues in the bug fix notes so we assumed it had been fixed. Up to this point I've been using randomwalk for ALL my volumes since then except for TODAY where I switched to a standard medium. Happy to share ORBx and VDB files just need to send privately.


Could you please confirm this happens also with RC4 and share any ORBX we can use for testing if that's the case? Thank you.
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