I wouldn't say -1,2 is standard. It's not a setting I'd use except in very
specific circumstances because it misses too much detail. While it bothers
me that you're getting different results on different machines, missing
detail is very typical of too low a minimum sampling setting. Did you try
1,2 and 2,2 when you tested higher settings?
-----Original Message-----
From: owner-xsi(at)Softimage.COM [mailto:owner-xsi(at)Softimage.COM] On Behalf Of
Deon Roux
Sent: 02 April 2008 14:25
To: XSI(at)Softimage.COM
Subject: Re: Parts of texture dissapearing only in final render
Sorry Kim,
I missed this one.
I don't have the details of the initial settings but they were pretty
standard (almost default) -1,2 aa, gaussian filtering etc. Evreything but
the specific characters "i" were OK. In one part 2 of the five "i"
characters on screen were ok and the others were completely missing.
At first I put it down to the AA settings and proceeded to test from one
extreme to the other and everything in between. I turned off texture
blurring, tried mitchell, etc but no change.
Then I thought it may be a display issue with the non square pixel format
and the leter being averaged between two pixels. Square pixels at 1024x576
and the same result.
Then I moved into the FG sampling settings and saw a minor change when
increasing the sampling and associated settings but the render times went
through the roof.
At that point I was eating up time and went with a 1.5x render size, square
pixels with slightly increased FG sampling contrast settings .12 (from
memory) and presample density of 0.9. At this point, the artifact was still
visible on some frames but became manageable in post. The character was
faint but not missing altogether.
I suspect it was a result of FG more than anything else. Unfortunately, the
project is archived and I'm too busy to drop it back on the server to get
the exact settings - I only archive the final settings anyway.
Deon
----- Original Message -----
From: "kim aldis" <xsi(at)kim-aldis.co.uk>
To: <XSI(at)Softimage.COM>
Sent: Wednesday, March 26, 2008 3:39 AM
Subject: RE: Parts of texture dissapearing only in final render
Just out of interest, what were your AA settings?
> -----Original Message-----
> From: owner-xsi(at)Softimage.COM [mailto:owner-xsi(at)Softimage.COM] On
> Behalf Of Deon Roux
> Sent: 25 March 2008 15:25
> To: XSI(at)Softimage.COM
> Subject: Re: Parts of texture dissapearing only in final render
>
> Sorry Kim,
> I should have added that I also ended up outputting at 16:9 square
> pixel
> format to avoid the issues with resizing.
> I spent several days testing the sampling settings but all it did in
> this
> case was change the frames on which the "i"s were completely invisible.
> the upsized render actually eliminated the problem (or avoided it to
> meet
> time contraints).Come to think of it, it may have been the change to
> square
> pixels.....
> As for more work, only on the render nodes :-) I press the same buttons
> in
> post regardless of resolution.
>
>
> -D
>
> ----- Original Message -----
> From: "kim aldis" <xsi(at)kim-aldis.co.uk>
> To: <XSI(at)Softimage.COM>
> Sent: Wednesday, March 26, 2008 1:02 AM
> Subject: RE: Parts of texture dissapearing only in final render
>
>
> If you are rendering 16:9 with non-square pixels, remember the anti-
> aliasing
> is assuming square pixels and can be well and truly messed up when the
> image
> is later sized to its correct proportions. And that rendering large and
> downsizing doesn't get you anything you can't get with mr's sampling
> settings. Other than a bunch of extra work, of course.
>
> > -----Original Message-----
> > From: owner-xsi(at)Softimage.COM [mailto:owner-xsi(at)Softimage.COM] On
> > Behalf Of Deon Roux
> > Sent: 25 March 2008 13:39
> > To: XSI(at)Softimage.COM
> > Subject: Re: Parts of texture dissapearing only in final render
> >
> > What pixel aspect ratio is your output?
> > I recently did a job with a particular font in the image -
> everything
> > was
> > fine except for the letter i in some spots. The main part of the
> letter
> > was
> > completely wiped out by the sampling. I ended up rendering out at 1.5
> x
> > the
> > required size and downsizing. This was PAL 16:9.
> >
> > -D
> >
> >
> > ----- Original Message -----
> > From: "Tauno Ööbik" <tauno(at)joonisfilm.ee>
> > To: <XSI(at)Softimage.COM>
> > Sent: Tuesday, March 25, 2008 7:17 PM
> > Subject: Parts of texture dissapearing only in final render
> >
> >
> > > There is a texture on a box what is moving to the center of frame
> > from
> > > right side. In center it stops, exactly on the frame where it
> stops,
> > some
> > > fine details(letters) dissapear in final render. In render region
> is
> > all
> > > fine, also sampling is high enought to catch these details. If I do
> > render
> > > region, everything is fine but if I do render out with same
> settings
> > then
> > > small letter on texture dissapears. The part what dissapears is
> > always the
> > > same :/
> > > Very very weird, has anyone bumped to something like that? Will try
> > to use
> > > different file format for texture.
> > >
> > > -T
> > > ---
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> in
> > body:
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> >
> >
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