How do I reduce prepasses?

[gchianese]

I recently switched from vray free to vray basic. One of the differences Ive found is that in free I could use the IR map presets to determine the number of prepasses for the rendering. In basic I always see 4 prepasses being done no matter what the preset is. This is really slowing things down as my test renders are much longer than before.

Any Ideas?

[plastic_]

actually more prepasses can speed things up.
the number of prepasses is defined by the min & max values of all interpolation settings.
like -3 / -1 for the irradiance map should be 3 prepasses, but if you also use glossy reflections with -3 / 0 it's 4.

[gchianese]

Thanks for your response. Where do you set the glossy reflection values?

[olitech]

....but, if you still insist on 1 pass for tests, avoid glossies and set min/max rates to something like -3, -3 or -2, -2 etc.

[deneb26]

i have a question about prepasses&glossies:

is there a possibility to disable glossies in a global way?
the reflections would still be shown in the rendering.

greez
ale

[DaForce]

Glossys are only used if you turn them on. without then you just get clear reflections and refractions.

And i dont think there is a global "glossys off" switch anywhere. This would only help if you had a scene with lots of glossy effects and you wanted to do some test renders with the glossy effects off to spend up the test renders.