Mental Ray Render Elements problem

[jfmonod]

Hi,

 

I'm using Max 2009 and am having a problem rendering out my shadows, diffuse ... etc to seperate files with "Render Elements" in Mental Ray. Specifically I end up with a bunch of black image files. "Shadows" does not contain any information at all and "Diffuse" shows bits of distorted false color image which looks like half of a scanline render but using mental ray materials. Z depth is coming out ok.

 

What I don't get is that my scene renders fine otherwise. Everything's there and shadows are fine. it's just when I try to split it up for compositing that the rot sets in.

I have an exterior scene with a Mr Daylight system, final gather, render elements (diffuse, shadow, z depth) on and filter on. I have tried output to tif & png with no effect.

Geometry is exported from Revit and uses Arch & Design materials.

 

Also, how does one render out individual elements in MR without having to render the entire image ?

 

Any help would be much appreciated as always : )

 

Many thanks,

JF

[jinsley]

As far as your problems with rendering the different elements... I'm not sure.

 

But if I want to render seperate geometry elements I usually select the ojects and change their render options in the object properties menu...

[Tommy Burns]

This is supposed to be fixed with the new sp1 that is out now

[fossilrecord]

We've been having problems too. z-depth and object id usually come out ok, but everything comes out wonky. cant' wait for this to get fixed.

[fossilrecord]

I think we found the problem. We're using .exr for everything. The main render comes out fine, but any render elements are completely wrong. No amount of adjustment fixes it. Playing around we did a test and saved the render elements as .hdr and everything works fine. All the data is there and everything comps fine. I dont think it's the file format, but maybe the implementation? Maybe we're not hittting the save button properly? The files are much smaller too. So for now we use .hdr for our renders.