Steve Baker (sbaker++at++link.com)
Mon, 8 Dec 1997 09:17:30 -0600 (CST)
> 1. It's about texturing.
> Texured image in performer always look posterized while original is not.
> In other words, colors with gradation look banded.
> I tried several filtering methods, but it did not improve image quality
> considerably.
Probably it's the 16 bit image format for textures. In this mode, you
get at best only 5 bits of red, 6 bits of green and 5 bits of blue.
You have probably been viewing your originals in 8+8+8.
You can tell Performer to use 8+8+8 colour resolution - but on current
hardware, you take a considerable pixel-fill rate penalty for doing that.
This 'posterized' effect is much worse for images containing an alpha
component - so try to stick with '.rgb' images rather than '.rgba'.
Steve Baker 817-619-8776 (Vox/Vox-Mail)
Hughes Training Inc. 817-619-4028 (Fax)
2200 Arlington Downs Road SBaker++at++link.com (eMail)
Arlington, Texas. TX 76005-6171 SJBaker1++at++airmail.net (Personal eMail)
http://www.hti.com http://web2.airmail.net/sjbaker1 (personal)
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