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Re: [ft-devel] optimal configuration to render fonts using gamma correct
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From: |
Behdad Esfahbod |
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Subject: |
Re: [ft-devel] optimal configuration to render fonts using gamma correction |
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Date: |
Tue, 31 Jul 2012 15:02:29 -0400 |
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User-agent: |
Mozilla/5.0 (X11; U; Linux i686 (x86_64); en-US; rv:1.9.2.28) Gecko/20120306 Thunderbird/3.1.20 |
On 07/31/2012 01:51 PM, Francesco Abbate wrote:
> I believe that gamma correction is necessary to render properly
> antialiased graphics but when I render the text with gamma correction
> it looks too much light, almost washed out.
An extremely powerful way to evaluate whether your gamma is correct is to use
fore / back colors of the same luminosity but different hue. Then if your
gamma is correct, the blending edges should have the same luminosity as the
fore / back colors. See for example:
http://people.freedesktop.org/~sandmann/srgb.png
BTW, I've observed the same behavior that you observed in GLyphy.
behdad