Multipass rendering (buffers) for still image composition

cruisermori · Post by **cruisermori** » Fri Aug 31, 2012 6:01 pm

I am not able to make still picture composition from buffers provided by KRay in PS and/or Fusion. Do you know the way how to do it (which buffers to combine)? Reflection and refraction are OK. I have problem with shadows/diffuse. Thank you in advance for your help.

Post by **jure** » Fri Aug 31, 2012 9:41 pm

The buffers can be comped together with this formula:

(caus+dire+indi)*txtr+othr+lumi+refl+refr

cruisermori · Post by **cruisermori** » Sun Sep 02, 2012 7:25 pm

Thank you very much Jure for the formula. The only problem I have is how to simulate Tonemap Blend in PS. Buffers are exported in Linear mode. Any suggestion?

Post by **jure** » Mon Sep 03, 2012 8:25 am

cruisermori wrote:Thank you very much Jure for the formula. The only problem I have is how to simulate Tonemap Blend in PS. Buffers are exported in Linear mode. Any suggestion?

You won't be able to simulate tonemap blending easily in PS. It's a special feature in Kray that blends two tonemappings together. So there's no easy way to achieve this in post. Best is to render to HDR and then use some HDR tonemapping tools in PS or AFX...

cruisermori · Post by **cruisermori** » Mon Sep 03, 2012 10:56 am

OK I understand. Would it be possible to implement this tonemap to RGB buffers that contains image data as well in the next KRay version?

jnom · Post by **jnom** » Mon Sep 10, 2012 11:48 am

Are we going to have exr support for kray 3.0? Pwwwease

Is the kray 3.0 beta already ongoing?

www.kraytracing.com