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Re: [ft-devel] [ftgrid] Display rendered bitmap (new feature).

From: Alexei Podtelezhnikov
Subject: Re: [ft-devel] [ftgrid] Display rendered bitmap (new feature).
Date: Sat, 13 Feb 2016 23:40:22 -0500

>>> Trying it on arial.ttf, I see some greenish artifacts at the pixel
>>> borders; similarly, the outline partially changes its colour
>>> depending on the zoom.  Is it possible to suppress these effects?
>> I'm pretty sure that those are a graphics system caching bug.  There
>> is a cache of gradients to speed up blending with gamma.  This
>> feature stresses its limits because there is a lot more gradients to
>> cache as we blend on top of blending.
> With `graphics system' I assume that you mean FreeType's small
> graphics library, right?  Can you fix this problem?

I took a shot that felt right and it fixed the issue. Please review this:

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