Hello, I want to use the Accurate (Iray) renderer in Isaac Sim. In Create I can activate the renderer from the drop-down menu, but in Isaac Sim I only see the Real-Time and Path-Tracing renderer. Is there any way to activate the Iray renderer for Isaac Sim? Thanks, Jonas

I don’t think this is true. I saved the settings into a usda while having render settings set to Iray and got this: #usda 1.0 ( customLayerData = { dictionary renderSettings = { int “rtx:pathtracing:maxBounces” = 8 int “rtx:pathtracing:spp” = 5 string “rtx:rendermode” = “PathTracing” } } ) …

The iray rendering system has been removed from Issac Sim. It is only available in python script, but not in the UI by default now.

By using the extra argument --/renderer/enabled=‘rtx,iray’ in the Isaac Sim App Selector, it is possible for me to get the Accurate (Iray) renderer as an option in the drop-down menu. However, it seems that selecting the option in the drop-down menu does not change the renderer everywhere. For me, i…

Yes you cannot simply overide the iray system with that flag. You have to go to your Extensions Manager in Issac Sim and find the iray rendering extension and enable it. The entire extension is off by default now. So you have to load it before you can use it. Do not edit the code flags.

The issue also occurs for me when the extensions omni.hydra.iray, omni.iray.libs and omni.iray.settings.core are enabled. Those extensions for me are enabled by default when I launch Isaac Sim via the Isaac Sim App Selector. Are there any other extensions which I would need to enable?

I will try to find out. One thing you could do is simple open your USD project in USD Composer and render in IRAY there.

Thank you very much. I would prefer to use Isaac Sim due to its ability to interact with ROS2 and to also simulate, e.g., IMU’s. The material which I would like to use is an MDL material with a measured BSDF, which seems to be not supported by the RTX Real-Time renderer. I would like to use this mat…

Isaac Sim - Accurate (Iray) Renderer

Omniverse Isaac Sim

rthaker October 31, 2023, 7:56pm 2

You need to go to Render Settings as shown in the screenshot above.

MDL materials with measured BSDF in NVIDIA Isaac Sim

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Isaac Sim - Accurate (Iray) Renderer

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