z buffer troubles

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albertos
Posts: 20
Joined: Wed May 19, 2010 12:25 pm

z buffer troubles

Post by albertos »

Hi to all...
I need to output just z-buffer pass of an animation sequence

I'm trying with kray buffer plug in,.. but the results are just totally white frames

my settings are:

classic camera, DOF is on (I can see it on the GL preview)
on kray FSAA is on
on kray buffer plugin the clip front is about 10m, the clip back -1, the values are front: 25.0 back: 0.0...

but nothing... the frames are empty... just black

thanks!

Alberto
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Janusz Biela
Posts: 3265
Joined: Mon Mar 13, 2006 10:39 am
Location: Finland
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Re: z buffer troubles

Post by Janusz Biela »

Must be clip front 0 (zero), sometimes 1-2 meters - this is position BEFORE object
clip back on the plus (1 m, 10m, etc - range behind object)
Can be front 1m and back 2 m...so You have color transition only 1 m.
But front and back value is dependent from scene.
jure
Posts: 2142
Joined: Thu Jun 02, 2005 6:53 pm

Re: z buffer troubles

Post by jure »

min distance should be 0. -1 means infinity and will not work correctly with LDR buffer. You must output to HDR to see the full HDR buffer.
- Jure
albertos
Posts: 20
Joined: Wed May 19, 2010 12:25 pm

Re: z buffer troubles

Post by albertos »

ok... thanks johny, thanks Jure...
on wiki manual was not so clear... with HDR now works correct

my goal now is to compose everything inside AFX...

thanks

Alberto
albertos
Posts: 20
Joined: Wed May 19, 2010 12:25 pm

Re: z buffer troubles

Post by albertos »

finally I've made it....

here's the video:

http://vimeo.com/20280493

z buffer correctly exported in RLA format
defocused with AFX+lenscare plug-in

thanks!

Alberto
jure
Posts: 2142
Joined: Thu Jun 02, 2005 6:53 pm

Re: z buffer troubles

Post by jure »

Looking great!
- Jure
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