Hi;
I'm getting this weird glitch when I try to render a simple sphere with material X applied to it.
Octane 2026.3.3 Alpha 3MaterialX Bug (21.0.512)
Moderator: juanjgon
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D. Nvidia driver version (i.e. 7.50, 7.5.22)
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F. OctaneRender plugin version (i.e. v2.25 - 2.21)
G. Host application version, including build number if available (i.e. 3ds Max 2016 Build 18.0)
Before posting a bug report, please check the following:
1. That the issue has not already been disclosed
2. That the issue is specific to this plugin, and not Octane in general (Try reproducing it in Standalone)
Bugs related to the Octane Engine itself should be posted into the Standalone Support sub-forum.
All bug reports should include the information below, along with a detailed description of the issue and steps to reproduce it.
A. Operating System, including version (i.e. Win 7, OSX 10.11.2, Ubuntu 14.04, etc.)
B. Graphics Card(s) model (i.e. GTX 580 - 3GB, TITAN, etc.)
C. RAM Capacity (i.e. 6 GB)
D. Nvidia driver version (i.e. 7.50, 7.5.22)
E. OctaneRender Standalone version, if installed (i.e. 2.24.2, 2.23, etc.)
F. OctaneRender plugin version (i.e. v2.25 - 2.21)
G. Host application version, including build number if available (i.e. 3ds Max 2016 Build 18.0)
I didn't share a debug file and/or a hip file, because this seems to be quite persistent and should be easy to replicate.
1- In Houdini v 21.0.512 In the obj context, create a mesh.
2- Create a Mat net and an Octane Vop and inside it. Dive inside and create a materialx standard shader and connect to an Octane Material Out node.
3- Assign the material to the mesh.
4- Get an IPR render.
1- In Houdini v 21.0.512 In the obj context, create a mesh.
2- Create a Mat net and an Octane Vop and inside it. Dive inside and create a materialx standard shader and connect to an Octane Material Out node.
3- Assign the material to the mesh.
4- Get an IPR render.
Yeah the issue is that the default in mtlx node for normal value is 0,0,0 but Normals usually should default to 0.5,0.5,1. So the numerical value here should be ignored.
This should be fixed in the next release, but in the meantime plugging in a normal node should fix the problem.
This should be fixed in the next release, but in the meantime plugging in a normal node should fix the problem.
Happy Rendering!
Dom - Octane Houdini QA Engineer
Btw did you know Octane has a discord? https://discord.gg/F4WENTG
It's a great place to get very fast feedback or support from me and other Octane Houdini users.
I'd highly recommend it!
Dom - Octane Houdini QA Engineer
It's a great place to get very fast feedback or support from me and other Octane Houdini users.
I'd highly recommend it!

