I hate prepass!!! [Pics Inside]

[panda80]

Now I explain my problem.
I created an interior scene for an exam.
In the first time I use some Interpolated glossy mat for floor and glass...
The final render is about 1800*1200.
I set the irradiance map parameter as custom and the global photon map.
I let render the irradiance map of a 1800*1200 resolution and I save it.
So I check load map and I render the final image, but I see that Vray recalcute prepass...
Some person write to me that when I use interpolated glossy mat, Vray recalcute 4 prepass...
So I don't use that glossy reflection, but use A vraymap as reflection...
But I see the same prepass...
But...
I created a simple scene with only one Vray light, and a floor with the sam interpolated glossy mat...I render the irradiance and global photon map, I save it and when I re-render the image of 500*500 I DON'T SEE ANY PREPASS!!!!
Why that???

[panda80]

Irrdiance settings:


Floor mat:


Glass mat:

[RErender]

As I remember having a unused material with iterpolation in the Mat Browser will still cause it to do the pre-passes.

[panda80]

So...what kind of setting may I use???

[suitaloon]

I don't remember exactly what I did last time I encountered this problem, but you have to either uncheck the interpolation in the material, or set its pass settings the same way as your general settings (not sure that'll solve the problem though).

[panda80]

I found that link
http://www.vray.info/entry.asp?entryID=101
So I change the Irradiance map Max Rate to -1...
I'm waiting for results....