Re: Alpha and anti-aliasing...

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Allan Schaffer (allan++at++southpark.engr.sgi.com)
Fri, 8 May 1998 19:05:59 -0700 (PDT)

On May 8, 2:23pm, Jan Barglowski wrote:
> This is probably a really easy question to answer. I have a cloud
> texture that is in rgba format. I texture it to a square and view
> the file in perfly. The texture looks to have 2 bits of alpha, unless
> I turn off anti-aliasing! Now, I don't want to turn off antialiasing
> for my main app, so how do I solve this?

Angus is correct about the transparency setting and Marcus about
texture; just to clarify the overall point you'll have to do both
things they say.

You're running into two of the places where Performer's default
behavior chooses 'fast' instead of 'high quality': #1 with
transparency (when ms is enabled it uses subpixel alpha by default
instead of blending) and #2 with texture formats (textures are
reduced to 16 bits by default)

Allan

-- 
Allan Schaffer                                                allan++at++sgi.com
Silicon Graphics                               http://reality.sgi.com/allan
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