texture rendering without filtering 2004-06-03 - By Nick
Back
I think I posted a shader a few threads back to get non filtered images to
drive displacements, the thread if I remember was about achieving a pin cushion
effect with displacements... you can avoid texture filtering through the
rendertree, it's nothing too complex, that way you can also crank your anti
-aliasing to whatever levels suit best while still preserving the advantages of
adaptive aa...
-- -- Original Message -- --
From: Andras Ikladi
To: XSI@(protected)
Sent: Thursday, June 03, 2004 11:20 PM
Subject: Re: texture rendering without filtering
kim aldis wrote:
> That I couln't be sure about without running some tests. It's not something
>I do a lot of, although I was working with someone a year or so ago who was
>doing camera projections for set replacement and he had a hell of a job
>trying to get it right. My guess is that there'd need to be some kind of
>filtering because the textured image could get pulled around in all sorts of
>ways, stretched or compressed according to camera, object distortion,
>scaling, whatever. The question really is, does it filter where it doesn't
>really need to.
>
>The comment was no more, really, than an observation in the interests of
>completeness. I have a thing about accuracy and it seemed to me that it was
>possible to infer that threshold played a part when in fact it didn't.
>
>
Sorry, i was more replying to Bernard's post, just was a lazy beotch
including the correct history :)
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<DIV><FONT face=Arial size=2>I think I posted a shader a few threads back to
get
non filtered images to drive displacements, the thread if I remember was about
achieving a pin cushion effect with displacements... you can avoid texture
filtering through the rendertree, it's nothing too complex, that way you can
also crank your anti-aliasing to whatever levels suit best while still
preserving the advantages of adaptive aa... </FONT></DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT:
#000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">-- -- Original Message -- -- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=kodiak@(protected) href="mailto:kodiak@(protected)">Andras
Ikladi</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=XSI@(protected)
href="mailto:XSI@(protected)">XSI@(protected)</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, June 03, 2004 11:20
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: texture rendering without
filtering</DIV>
<DIV><BR></DIV>kim aldis wrote:<BR><BR>> That I couln't be sure about
without running some tests. It's not something<BR>>I do a lot of, although
I was working with someone a year or so ago who was<BR>>doing camera
projections for set replacement and he had a hell of a job<BR>>trying to
get it right. My guess is that there'd need to be some kind
of<BR>>filtering because the textured image could get pulled around in all
sorts of<BR>>ways, stretched or compressed according to camera, object
distortion,<BR>>scaling, whatever. The question really is, does it filter
where it doesn't<BR>>really need to.<BR>><BR>>The comment was no
more, really, than an observation in the interests of<BR>>completeness. I
have a thing about accuracy and it seemed to me that it was<BR>>possible
to
infer that threshold played a part when in fact it didn't.<BR>>
<BR>><BR>Sorry, i was more replying to Bernard's post, just was a lazy
beotch <BR>including the correct history :)<BR><BR>---<BR>Unsubscribe? Mail
<A
href="mailto:Majordomo@(protected)">Majordomo@(protected)</A> with the
following text in body:<BR>unsubscribe xsi<BR></BLOCKQUOTE></BODY></HTML>
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