Quote - I notice in the D3D dialog there is now (I think) an extra "Pre-pass" value, just below the IDL / IC section.

This seems to default to 1.0.

Which is the highest setting for the slider... but may have an inverse relationship with the application of whatever it's controlling (like IC), I guess?

Does this have any bearing on anything being discussed here?

off to read manual

Here's the answer. http://www.renderosity.com/mod/forumpro/showthread.php?thread_id=2854847