Kit 108.1 Release Notes#

Release Date: September 2025

Kit SDK#

Added#

  • RTX - On systems with multiple GPUs, scenes containing Warp nodes with Fabric Scene Delegate enabled can cause flickering artifacts. [OMPE-58377]

  • RTX - The attribute “Hide From Camera” in the Add>Rendering menu has been renamed to “Invisible To Primary Ray” to be consistent with the “Invisible to Secondary Rays” attribute. [OMPE-12645]

  • USD Exchange - Global Materials are used if instancing is disabled. [OMPE-59166]

  • USD Exchange - Geometry Prims are transformed to the center of the Part bounding box to reduce the size of vertex position values. [OMPE-58246]

  • USD Exchange - Display names are authored for all Prims that could not use the preferred name. [OMPE-58205]

  • USD Exchange - Prims representing multiple Elements no longer have an Element ID in their name. [OMPE-58104]

  • USD Exchange - Display names are now set on Material Prims. [OMPE-57857]

Fixed#

  • Fabric Scene Delegate - PointInstancer does not update correctly if prototype transform is changed with FSD enabled. [OMPE-54434]

  • Fabric Scene Delegate - Toggling payload variants not changing in Viewport with FSD enabled. [OMPE-40148]

  • Fabric Scene Delegate - Role info is missing on primvars such as texture coordinates when FSD is enabled. [OMPE-23953]

  • Kit App Streaming - Resizing the viewport in Kit base editor triggers a new AOV stream with new port number, breaking existing stream. [OMPE-58931]

    Viewport streaming only works if the ‘Fill’ option is disabled.

  • Kit SDK - Common Render Settings window logs: “Unable to cast Python instance of type <class ‘float’>” errors. [OMPE-56104]

  • Kit SDK - Geometry widgets should not show physics properties in Extra Properties. [OMPE-53881]

  • Kit SDK - Closing external windows will leave a black tile. [OMPE-52542]

  • Kit SDK - Help menu doc links are incorrect. [OMPE-52539]

  • Kit SDK - Viewport cameras cause Asset Validator to fail KindChecker. [OMPE-49352]

  • Kit SDK - Materials show as red when MDL is on a networked drive. [OMPE-39987]

  • Kit USD - Deleting UsdShade prims leaves dangling connections. [OMPE-54736]

  • Kit USD - Error when adding transforms on a payloaded XForm prim. [OMPE-53362]

  • omni.kit.registry.nucleus - Registry sync over HTTP proxy server not working. [OMPE-60828]

  • omni.kit.window.material - Stage materials not updated when reference/payload created. [OMPE-53325]

  • omni.usd.audio - Failed to subscribe to stage events startup warning. [OMPE-53340]

Improved#

  • Foundation - Converted omni.kit.widget.context_menu to use Events 2.0. [OMPE-39914]

  • Foundation - omni.kit.usd.layers and omni.kit.collaboration.presence_layer extensions converted to Events 2.0 [OMPE-39913]

  • Foundation - Converted omni.kit.property.adapter.core to use Events 2.0. [OMPE-39910]

  • Foundation - Converted omni.kit.manipulator.prim.core to use Events 2.0. [OMPE-39909]

  • Foundation - Converted omni.kit.hydra_texture to Events 2.0. [OMPE-39908]

  • Foundation - Converted omni.graph / omni.graph.core to use Events 2.0. [OMPE-39905]

  • Kit SDK - Upgrade to Client Library 2.66.0. [OMPE-53441]

  • Kit SDK - Updated pycares from 4.3.0 to 4.8.0 [OMPE-24866]

  • omni.kit.window.script_editor - Optimized polling for script updates. [OMPE-41253]

  • omni.resourcemonitor - Converted to use Events 2.0. [OMPE-39915]

Rendering#

Fixed#

  • RTX - In some scenes using the viewport Camera Light mode together with many-light sampling may cause artifacts. [OMPE-57827]

  • RTX - Occasional crash when reloading the same stage multiple times. [OMPE-62799]

  • RTX - Could not get device current PCI-e link generation [OMPE-59197]

    Disables PCIe link generation and width check if vGPU is found. If PCIe link generation and width returns NVML_ERROR_NOT_SUPPORTED log is treated as info. and not error.

  • RTX - Infinite bounds can hide meshes and stall the viewport in large scenes. [OMPE-56685]

  • RTX - Loading hsscclient in background threads can lead to instability. [OMPE-54255]

  • RTX - Excessive DLSS ghosting when moving prims. [OMPE-53847]

  • RTX - Camera gizmos affect lighting. [OMPE-52086]

  • RTX - The changes made to the omni:rtx:skip flag in omni:rtx are ignored by the renderer, causing issues with prim skipping. [OMPE-51251]

  • RTX - Some mesh operations can create incorrect results leading to crash. [OMPE-51187]

  • RTX - First frame of a DepthSensor AOV can fail to be produced when using RT with DLSS/DLAA. [OMPE-47370]

  • RTX - Tiled .tiff or .tx files load improperly and show up as black. [OMPE-44009]

  • RTX - Memory leak when switching references. [OMPE-40298]

Known Issues#

  • PhysX - Crash on Windows 10 and 11 running on L40 GPUs with 580.x and 581.x drivers when repeatedly loading and simulating certain Physx demo scenes. [OMPE-64971]