OTOY Forums

{
    "enable": true,
    "env": [
        {
            "OCTANE_AUTOSPAREPARAMS": {
                "value": 1
            }
        },
        {
            "OCTVERSION": "PATH/TO/OCTANE"
        },
        {
            "HOUDINI_PATH": {
                "value": "$OCTVERSION"
            },
            "HOUDINI_MENU_PATH": {
                "value": "$OCTVERSION/config/Menus"
            },
            "HOUDINI_SCRIPT_PATH": {
                "value": "$OCTVERSION/scripts"
            },
            "PATH": {
                "value": "$OCTVERSION/bin"
            },
            "PXR_PLUGINPATH_NAME": {
                "value": "$OCTVERSION/dso/usd_plugins"
            }
        }
    ]
}

• - Unified with OctaneRender 2026.4.0.0 for Houdini Production (2026.4.0.0)
• - Implemented Hydra HioImage for texture loading which also supports floating point formats like EXR
• - Implemented linear and SRGB color spaces for texture imports
• - Implemented support for the Octane Material Builder.
• - COP op: and opdef: texture assets are now fully supported.
• - Fixed MaterialX multiply node
• - Fixed texture colorSpace

frankserin wrote: Mon Jul 27, 2026 4:40 am Hi, is there currently any way to read primvars:displayColor per instance from a USD PointInstancer in Octane Solaris?

The attribute exists correctly on the PointInstancer, but Octane renders all instances with the same color.

BK wrote: Tue Jul 28, 2026 12:40 am

frankserin wrote: Mon Jul 27, 2026 4:40 am Hi, is there currently any way to read primvars:displayColor per instance from a USD PointInstancer in Octane Solaris?

The attribute exists correctly on the PointInstancer, but Octane renders all instances with the same color.

Hi Frankserin,

Thank you so much for the post.

Would you please share a sample scene for us to investigate?

Cheers

frankserin wrote: Tue Jul 28, 2026 10:52 pm I honestly do not understand the current state of the Octane integration with Solaris. Too many exposed features simply do not work or behave inconsistently.

For example:

Particle size settings inside Render Geometry Settings do not work.
Hair width, curve type, and other curve-related options do not work.
Visibility controls sometimes work and sometimes do nothing.
Light Pass IDs are also inconsistent.
Many Octane properties available on lights and cameras require restarting the render after every slider adjustment or parameter change before the result becomes visible.

Octane may be one of the best render engines available in terms of image quality, but its Solaris integration is deeply disappointing.
Is there an actual roadmap to make the Solaris integration reliable and fully functional?

BK wrote: Tue Jul 28, 2026 11:36 pm

frankserin wrote: Tue Jul 28, 2026 10:52 pm I honestly do not understand the current state of the Octane integration with Solaris. Too many exposed features simply do not work or behave inconsistently.

For example:

Particle size settings inside Render Geometry Settings do not work.
Hair width, curve type, and other curve-related options do not work.
Visibility controls sometimes work and sometimes do nothing.
Light Pass IDs are also inconsistent.
Many Octane properties available on lights and cameras require restarting the render after every slider adjustment or parameter change before the result becomes visible.

Octane may be one of the best render engines available in terms of image quality, but its Solaris integration is deeply disappointing.
Is there an actual roadmap to make the Solaris integration reliable and fully functional?

Hi Frankserin,

Thank you so much for the scene file.
Could you please use instanceColor node and change the node name to "displayColor" inside the Particles Material?
Something like this:
SolarisDisplayColor.png

Regarding the other issues, the main issue is requiring to restart render.. It also happens when we change the Lens type with Realistic camera.
We have reported this to our developer.
We are trying to replicate the other issues and hope it get fixed in the next release.

We will discuss with our developer for a roadmap and give you an update!!

Cheers

frankserin wrote: Tue Jul 28, 2026 10:52 pm I honestly do not understand the current state of the Octane integration with Solaris. Too many exposed features simply do not work or behave inconsistently.

For example:

Particle size settings inside Render Geometry Settings do not work.
Hair width, curve type, and other curve-related options do not work.
Visibility controls sometimes work and sometimes do nothing.
Light Pass IDs are also inconsistent.
Many Octane properties available on lights and cameras require restarting the render after every slider adjustment or parameter change before the result becomes visible.

Octane may be one of the best render engines available in terms of image quality, but its Solaris integration is deeply disappointing.
Is there an actual roadmap to make the Solaris integration reliable and fully functional?

BK wrote: Wed Jul 29, 2026 2:05 am

frankserin wrote: Tue Jul 28, 2026 10:52 pm I honestly do not understand the current state of the Octane integration with Solaris. Too many exposed features simply do not work or behave inconsistently.

For example:

Particle size settings inside Render Geometry Settings do not work.
Hair width, curve type, and other curve-related options do not work.
Visibility controls sometimes work and sometimes do nothing.
Light Pass IDs are also inconsistent.
Many Octane properties available on lights and cameras require restarting the render after every slider adjustment or parameter change before the result becomes visible.

Octane may be one of the best render engines available in terms of image quality, but its Solaris integration is deeply disappointing.
Is there an actual roadmap to make the Solaris integration reliable and fully functional?

Hi Frankserin,

We had a quick look at your feedback.
The hair, Visibitly and Light Pass IDs seems to be working.
Adding simple sample files on these..
Maybe it would be great if you can DM your scene.

We have created a ticket on particle size issue.

Solaris.zip

Cheers