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z buffer troubles

Posted: Fri Feb 18, 2011 6:54 pm
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

Re: z buffer troubles

Posted: Fri Feb 18, 2011 10:22 pm
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.

Re: z buffer troubles

Posted: Fri Feb 18, 2011 10:23 pm
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.

Re: z buffer troubles

Posted: Sun Feb 20, 2011 7:27 pm
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

Re: z buffer troubles

Posted: Wed Feb 23, 2011 3:10 pm
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

Re: z buffer troubles

Posted: Thu Feb 24, 2011 4:58 pm
by jure
Looking great!