Miscellaneous Changes

• The Viewer Plugins now support textutre maps with more than 4 channels
• instance.ID instances now output an object id
• The IntAttribute prmanSuppressMasterId turns off object ids on instance masters, enabling unique ids per instance
• Procedural string parameters which are empty are now correctly passed to the procedural as a single-quote-delimited empty string ("''")
• Volumes can now be enabled and disabled during live rendering
• The new light learning selection scheme option is available in PrmanGlobalStatements. This option is off by default to preserve old behavior initially
• If stats are enabled the filename and/or xmlfilename are now printed to the log as: "RenderMan stats xmlfilename: /path/to/stats/filename.xml"
• Diagnostic output has been streamlined
• Handles for shaders are now used instead of the generic "terminal.<type>" when building shader nodes
• Aborting IPR renders on Windows no longer has a lengthy delay before returning control to the application
• RfK will now always report the number of threads requested of the renderer. Previously that message would only appear if the value had been overridden by Katana preferences
• The Katana scenegraph traversal time is now included in the Rendering stats under a new "Bridge" section. There is also an "Ops" section for displaying timers and counters from per-object "prmanStats" attributes
• Log messages have been standardized under the "RfK" namespace
• A missing RMANTREE variable is now logged as an ERROR instead of a WARN
• Output messages for loading from specific shader paths are now logged as INFO messages
• The messages "Loading RenderMan shaders..." and "RenderMan shaders loaded." have been removed
• Restored support for "instance.ID" implicit instancing for groups

Fixes

• Live render updates to the material.resourceVersions attribute on material locations are now respected
• Light filters and light filter references under a dome light with portals will now have the correct mute state
• The "exitat" checkpoint option will now work even if the "interval" checkpoint option isn't set
• primAttributes set on polymesh locations with facesets are now respected
• A live render edit that results in removing a parameter from an integrator's parameter list will now correctly revert the parameter to its default value
• RMAN_RIXPLUGINPATH and RMAN_SHADERPATH now correctly accept the ";" path separator on Windows
• Removed duplicated shader warnings when an OSL pattern was found on both the RMAN_SHADERPATH and RMAN_RIXPLUGINPATH.  OSL shaders will only be loaded from the RMAN_SHADERPATH
• Fixed a bug where motion blurred instance arrays with the instanceMatrix attribute defined as a DoubleAttribute would crash
• Live render edits to a mesh light will now work even if only the light location is enabled in the live render working set.  The one exception to this is deleting the mesh location
• Defining unique coordinate systems per instance should now work for leaf-level instancing (instance.ID)

Live Rendering

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

• Cannot change a geometry primitive type during live rendering (e.g. from NURBS to polymesh)

• When assigning a material to a Scene Graph location, that location must be enabled in the live render working set

Katana Limitation

• When rendering to "it" from Katana, do not stop the render from "it", abort the render from Katana. Your Katana session may freeze for a time if you abort from "it". If you make this mistake you can restore Katana to operation by terminating the prman render process manually. This will be fixed in a future version. You can also avoid this entirely by rendering to the Katana Monitor.
• We do not receive live render edits from Katana for nodes added at the end of the node graph, right above the Render node.  If a no-op node (e.g. Merge) is inserted above the Render node and the node is added above that then the edit is received.
• Any live updates will cause interactive motion blur to be disabled. The render must be restarted.
• PRMan error handlers are not fully supported yet.
• Instanced lights with filters using the "Light Filter" coordsys have an incorrect transform. The workaround is to promote the light filter to a shared light filter using a light filter reference.
• There are a few live render limitations in Katana 2.6 that have been resolved in Katana 3.0 based on the improvements to 3.0, typically limitations with live working sets and adding/deleting locations in 2.6