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Welcome to RenderMan 22.4!

Welcome to RenderMan 22.4. This release introduces improvements to the previous RenderMan.

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Table of Contents
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What's New

  • Further imporvements to OSL performance — A new mode of "Batched" OSL shading is available as a User Option and when used with Intel® Advanced Vector Extensions 512 (Intel® AVX-512).  This may become defaulted to "on" in future versions. Read about it here under Performance Notes.


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Miscellaneous Changes


Fixes


API Changes



Interactive/Live Rendering Limitations

  • Crop window edits are restricted to fall inside the original crop window

RenderMan Pro Server Limitations

  • PxrUnified integrator does not yet support all the standard rendering features
  • Meshlights cannot be instanced
  • We do not read point data from OpenVDB files
  • PxrSurface back diffuse color is not output to the albedo color AOV
  • Analytical lights placed inside volumes may yield artifacts when made visible to the camera. As a work around, the light camera visibility should be turned off, and a geometry with a similar shape should be used (visible to camera, invisible to transmission and indirect rays), with the proper emissive bxdf
  • Using the ' . ' character in the handle for an OSL shader could cause unpredictable results during re-rendering
  • Per-Instance baking is not supported, only the reference instance
  • 3d baking: no direct bake-to-ptex support
  • PxrBakePointCloud cannot directly render ptex
  • Sample/Display filter plug-ins do not have access to lighting services for light dependent effects, e.g. lens flare
  • Adding new mesh light on existing geometry during IPR results in double geometry
  • Motion blurred polygons do not motion blur normals when deformed. Use Subdivision meshes instead
  • When attempting to access an array primvar, you must first check the size of the array primvar and allocate the appropriate space. Not doing so may lead to a crash
  • Points and curves cannot be used as geometric (mesh) lights
  • Deformation motion blurred volumes don't currently work with densityFloatPrimVar or densityColorPrimVar. You will need to use a PxrPrimVar node connected to densityFloat and densityColor instead

    Note

    The Centos KDE style "Oxygen" installs a version of Qt and sets the user's environment variable QT_PLUGIN_PATH forcing "it" and LocalQueue to attempt to load an incompatible Qt library. Either avoid installing the Oxygen theme or unset QT_PLUGIN_PATH before running "it" or LocalQueue. Other KDE styles may also install this theme.


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