RE: zpic in xsi 6.5 (related)

["Halfdan Ingvarsson" <hingvars(at)Softimage.COM>]

Are you talking for for display only or do you want to modify what gets written out to disk?

 

 - ½

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From: owner-xsi(at)Softimage.COM [mailto:owner-xsi(at)Softimage.COM] On Behalf Of Mr Creighton
Sent: 31-Oct-2007 10:38
To: XSI(at)Softimage.COM
Subject: Re: zpic in xsi 6.5 (related)

But how can I get it into that and change those values, resulting in a different Depth Channel? In Display Options, for example I can change the Depth-Cue/ Fog 's Start and End Values...but thus far (and it may very well be I have missed something really obvious) the Depth Channel values seem locked away from me....

Halfdan Ingvarsson wrote:

XSI uses the bbox of the scene to figure out how to normalize the depth values *for display only*. This does not affect the file output, which always records the depth as distance, in units, from the camera.

 - ½

-----Original Message-----
From: owner-xsi(at)Softimage.COM [mailto:owner-xsi(at)Softimage.COM] On Behalf Of Mr Creighton
Sent: 31-Oct-2007 10:25
To: XSI(at)Softimage.COM
Subject: zpic in xsi 6.5 (related)

I've been wondering if there's any way to over-ride XSI's (I'm using 6) Depth channel handling. It seems automated, in that the Zdepth always adapts to the most distant object in a scene. Since this is often the periphery of distant scenery, it would be nice to be able to move the Zdepths far value to a more useful point. Any way to do this short of rendering a seperate pass with the excellent zDepthDOF  shader?

ThierryBaret wrote:
  

It seems that in XSI 6.5, Zchannels are broken. The file that comes 
out of the depth framebuffer when switched to Z pic softimage and 
float is not a Zpic that XSI can read afterwards in the FxTree or not 
a Zpic at all...Nice!

Thierry


----- Original Message ----- From: "ThierryBaret" 
<baret.thierry(at)neuf.fr>
To: <XSI(at)Softimage.COM>
Sent: Wednesday, October 31, 2007 2:13 PM
Subject: Re: zpic in xsi 6.5?


    

Hello,

I am also trying to render a Z channel with XSI 6.5 (32bits) and the 
surprise is that all the channels have got the right output format as 
defined in the Render Scene option or the override format 
section....Except the z channel which unfortunately seems to be 
locked at 720 X 486. And of course when trying to do a DOF in the 
FxTree afterwards it doesn't work because the zchannel hasn't got the 
same format than the main.
Any clues on this really annoying "bug"?

Thierry



----- Original Message ----- From: "Andreas Bystrom" 
<andreas.bystrom.xsi(at)googlemail.com>
To: <XSI(at)Softimage.COM>
Sent: Wednesday, October 31, 2007 11:24 AM
Subject: Re: zpic in xsi 6.5?


      

hmm

i already set the main colour-buffer to pic and the depth-buffer to 
.zpic

is there anything else besides that i need to do? It saves out the 
.zpic and its around 1.6mb for a PAL frame but the fxtree nor the 
flipbook can read it..
i tried this in xsi 5.11 and it works fine as long as the output 
format is .pic

could you actually try this in xsi to see if it works? I remember 
seeing other people on xsibase having the same problem but with no 
solution..

On 10/30/07, Luc-Eric Rousseau <lucer(at)softimage.com> wrote:
        

You need to render by adding the depth channel and selecting .Zpic, 
not .zt, so that the .Zpic values are remapped properly.  It's 
normal for Zpic values to be between 0.0 and 1.0 in the fxtree, 
it's inside the DOF effect that the values will be multiplied back 
into softimage units.

However, ZPic are only avaiable if you also render the color buffer 
to softimage .pic, perhaps that is your problem.

          

-----Original Message-----
From: Andreas Bystrom

hey

i've been using the DOF node in the fxtree for quite some time
            

and in
          

some cases it does a much better job than for example lenscare
            

for AFX
          

so i'd like to use it for this project..

now, i cant figure out how to render .zpic files the same way you
            

used
          

to be in xsi 5 etc..
i know you can add a depth-channel and set it to .zpic but it 
doesnt work, you can also use .zt files but somehow its not the 
same as before. I think before the zpic used to be all float so 
they used to have a range of several thousands of units but now i 
can only
            

seem to
          

have a range between 0-1, even if i set the depthpass to float :(

can anyone shed any light on this?

thanks
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