Hi,

I have a scene with many leaves with a subsurface in their finish block, and a
moon (an isosurface without subsurface block) at the sky.

Without moon OR without subsurface in the global settings, the scene renders
quite fast, while adding the moon AND the subsurface option makes rendering very
slowly.

Since the appearance of the moon does not significantly change the way the
leaves (+ subsurface) look like, it would be a good option to tell POV-Ray the
following:

"When calculating the subsurface of the leaves, don't consider the existence of
the moon"

Setting the leaves and the moon in two different light_groups does not help.

Any idea?

Thank you in advance!

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