Live Rendering

• Updates to attributes will cause interactive motion blur to fail to render. The render must be restarted.

• Creating a mesh light from existing geometry will duplicate the geometry in-render. Restart the render to remove the duplicate.

• Monitor performance can lag behind edits for large scenes
• Creating a mesh light from existing geometry will duplicate the geometry in-render. Restart the render to remove the duplicate.
• Volume edits will break the volume render.
• Adding a portal light to a dome light doesn't delete the dome light
• Cannot Live Render from Viewer camera
• Cannot change a geometry primitive type during live rendering (e.g. from NURBS to polymesh)
• When traversal is parallel, edits to a live material will affect only a subset of assigned geometry unless all of the assigned geometry starts out live or is made live at least once during the live render session.

Alpha limitations

• If the environment variable RMAN_SHADERPATH or RMAN_RIXPLUGINPATH is set and doesn't include the default paths from RMANTREE then the default prman shaders are not found.
• New parallel Alembic_In_Prman not supported yet with Importomatic
• Prman's errorHandlers are not supported
• Dicing cameras do not work
• Deformation motion blur for blobbies and volumes not yet supported
• NURBS trim curves don't render
• Display and Sample Filters not yet supported
• Lights in nested instances do not render
• Checkpoint + recovery not yet functional
• Projections do not render correctly
• Stereo cameras do not render
• Holdouts not available
• Baking not available
• Clipping planes not available
• Polygons with holes not supported
• Light filter linking not supported
• Live udpates to ROI and crop window not supported
• Display "interactiveDisplayOptions" not supported
• Deep output type not supported
• Integer AOVs are not available in RenderOutputDefine
• Material assignment to archives do not function correctly in Alpha
• Alembic pass-through via AlembicIn_prman and Alembic proxy support in Viewer
• Env var for DSO Procedurals
• Instanced lights with filters using the "Light Filter" coordsys have incorrect transform
• Material matrix parameters of type double are not supported
• Material matrix array parameters
• Attribute "geometry.flip_t" is not currently supported
• Katana 3.0 only: Volumes and blobbies not yet functional.
• Katana 3.0 only: Viewer light viewer plugins and light modifier plugins not yet functional

Katana Limitation

• When a Prune node is added at the end of the node graph, right above the Render node, we do not receive an edit from Katana. If a no-op node (e.g. Merge) is inserted above the Render node and the Prune is added above that then the delete edit is received and the Prune works properly.