texture rendering without filtering 2004-06-02 - By Anthony Rossano
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As far as I know, unless you enable eliptical filtering in the Texture
node, there should be no default filter or mip-mapping going on.
It is more likely that the antialias filter settings you are using are
blurring ALL the pixel values, not just the texture samples. (if you
were using Box or Gausian filters that would do it).
To prove it, set sampling to 0,0 and see if the textures are still
blurry.
Now, to fix that, set samples to -1,2 and set the threshold to .05
(it's .2 by default, way too high) and use a Mitchell or Lancoz filter,
pretty high, like 4*4, 0r 5*5. You can experiment with EVEN HIGHER
values, like 7*7 that seem to add a sort of 'unsharp Mask' effect due
to the weird sampling profile the Lancos and Mirchel filters use.
I bet that gets you some prettier renders.
ATR
On Wed, 2 Jun 2004 11:53:22 -0400, Rob Cazin wrote:
>
> Does anyone know if there is a way to disable the filtering that is applied
> to images used in a texture map? I need to match footage by applying it to a
> grid, but it always gets soft, no matter how I tweak the anti-aliasing
> settings. Thanks in advance.
>
[ Anthony Rossano ]
- CEO, Mesmer Inc -
-tel: 206.782.8004-
-fax: 206.782.8101-
http://www.mesmer.com
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