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This new release of RenderMan for Maya 22 (RfM), includes a number of ne= w features to address feedback as well as many improvements to RenderMan fo= r Maya workflow and performance. Many parts of the plugin have been complet= ely rewritten to improve integration into Maya and simplify workflow.
Please see the release notes below for all the new capabilities and know= n issues! You may also wish to visit the migration page for selected highlights.
Current support for Maya 2018 only extends to 2018.2, other versions may= have errors as the API was changed.
Now you can render through all stages of your pipeline! From modeling to= final renders, RenderMan is designed to give you immediate feedback from i= nside Maya. By skipping the export of a scene to RIB, artists can get an im= mediate look at their work in full ray traced mode and continue to interact= and make changes without needing to restart the render.
Interactive grooming in Xgen is now supported. You can see your updates = during IPR.
The Render Settings menu now contains most everything you need to create= LPEs, change options for final renders, and more.
Render to the same window where you work! Move objects, make modeling ch= anges, add and alter materials and lights, even import and update asserts w= ithout needing to stop the render. RenderMan becomes your viewport at all s= tages!
Scene courtesy of Julien Duval
Better organization, smart exposure of options and attributes, and more-= native workflows mark this overhaul of the RenderMan for Maya plugin.
Added per-face shader assignment for SubDivs and Polygon meshes
PxrLayerSurface and PxrLayer handle lobe disabling and enabling more int= uitively.
Changed the default bucket order to circular, for a better user expe= rience.
Xgen : Xgen will crash during live rendering unless you set Window &=
gt; Preferences > Xgen > Multithreading to "off" (unchecked). See
PxrImagePlane sample filter now pays attention to the alpha channel = of the "plate" image and writes its newly computed alpha into beautyAlpha, = added a txmake preset for image planes to the txmanager
Trace sets work interactively, however, simple toggling on/off does = not work during IPR alone, another geometry edit must happen.
Instance Attributes and PrimVars are now split between the transform= node and shape node respectively to denote their operation and inheritance= .
Mesh nodes now have a section under the RenderMan extension attribut= es called "Reference Object" with checkboxes for which data is desired: __P= ref, __WPref, __Nref, and __WNref. This data gets emitted for the mesh when= a reference object is present (created by the user in Maya with the Textur= ing > Create Texture Reference Object menu). Maya's place3dTexture node = automatically will look for __WPref or __Pref. When using Pxr manifolds lik= e PxrManifold3D, the user needs to set up parameters on that node to make u= se of the Pref data. This workflow may evolve and simplify further.
OSL in RfM 22 does not support osl shaders of type "surface" please = use "shader" instead ("Surface" implies a closure which is not supported)= p>
The attribute spreadsheet will now show RenderMan attributes, elimin= ating the need for custom UIs
User controls have been added as an option for VP 2.0 rendering: sna= pshots, restart, and start/stop
The PxrRamp UI has been overhauled
Maya File Node has linearization improvements
LPE syntax highlighting has been added
<shape.frame>: the value of the 'frame' attribute on the curre= nt shape.
Attribute Lookups: This syntax accepts a colon-separated python= formatting string, when you need to format a numeric value: if frame =3D= =3D 12.25, <shape.frame:%04d> -> '0012'
Added a control for displacementbound:CoordinateSystem, please see the documentation.
We now check OpenVDB data to see if it's a volume or mesh when inges= ting the VDB file
Added PxrMarschnerHair hair lobe names to default lpe option strings=
Xgen procedural and Xgen groom (non-procedural) now support turning = normals on and off (for tubes vs ribbons).
NOTE: we no longer support always-facing-camera curves.
Alpha and RGBA color sets are now supported. RGBA color sets are emi= tted as "color colorSetName" and "float colorSetNameA" to allow for ease of= shader binding
Parameter help can be passed as an attribute in args files
An arbitrary node type in Maya can be mapped to an args file with pa= rams for a procedural. As an example, locator nodes now have a couple exten= sion attrs (for dso name and data) and they're mapped to an args file calle= d PxrProcedural.args. This can actually be used much like the RenderManProc= edural node, and it serves as an example of how to set up an args file and = mapping in mayaTranslation.json
There's a new RenderManProcedural node that can be created via Rende= rMan->Archive->Create Procedural Node. This node has fields for dso n= ame and a data string (useful for the older style of procedurals). It suppo= rts a preShapeScript that can be used for whatever setup is necessary befor= e translating the procedural, like caching or setting up the data attr.
=You can find a useful Doxygenated developer documentation in the Develop= ers' Guide under RfM2=
Old scenes may have issues with migration, areas of note are the PxrRamp= , subdivision settings, and AOVs. The following python script can correct t= hese or they can be run individually depending on your scene's needs or inc= luded features from RenderMan 21
import = rfm2.utils.scene_updater rfm2.utils.scene_updater.update_scene()
Older Maya scenes that had PxrRamp nodes in it may break. To fix, you ca= n run this python script in the script editor =E2=80=93
import = rfm2.utils.scene_updater rfm2.utils.scene_updater.update_pxrramp_nodes()
Older scenes may have incorrect geometry settings and can be updated spe= cifically using the below python script =E2=80=93
import = rfm2.utils.scene_updater rfm2.utils.scene_updater.convert_subdivs()
Older scenes with AOVs may fail to show in the new UI, the following scr= ipt can solve this issue =E2=80=93
import = rfm2.utils.scene_updater rfm2.utils.scene_updater.convert_displays()
Xgen : Xgen will crash during live rendering unless you= set Window > Preferences > Xgen > Multithreading to "off"= (unchecked).