This is RenderMan 21 Documentation you are viewing. The Rmanwiki home page will redirect you to the current documentation.

Page tree

Versions Compared


  • This line was added.
  • This line was removed.
  • Formatting was changed.


  • $Cs, Source image color (vector)
  • $u$v -texture coords (scalars)
  • $P - surface point (vector). Note: $P is sampled from the Pref geometry (if available)
  • $N$Nn - surface normal
  • $objectId - per-surface unique object Id, typically a small integer
  • $frame - current frame number