CGTalk - Alpha Slider in Sampling Contrast... What does it do?

View Full Version : Alpha Slider in Sampling Contrast... What does it do?

jham77

01-30-2007, 09:04 AM

As you see in the pic, I tried two extreme values: 0.001 and 0.990
But I couldn't see any difference,

Should I just ignore it completely?
or is there something to it?

I have searched the manual and no mention of it there.

http://www.boeunkim.com/solagratia/samq.JPG

I would very much appreciate any help on this.
Thank you in advance.

-J
SolaGratia

Felipe

01-30-2007, 11:41 AM

The sampling contrast determine the minimum level of contrast between neighbor pixels that should be antialiased.

The alpha slider is the same thing, but regarding the alpha channel. Usually you should leave the same value as the RGB sliders.

Lowering the sampling contrast to around 0.040 to 0.060 you get nice results without having to increase the max level beyond 2.

Do some tests and see for yourself which values works best for you.

Cheers,
Felipe

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