Page History

...

• $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
• $Vn - vector
• $objectId - per-surface unique object Id, typically a small integer
• $frame - current frame number

...