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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