Fix transparency in ab_glyph renderer

PolyMeilex / sctk-adwaita

Adwaita-like SCTK Frame

MIT License

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Fix transparency in ab_glyph renderer #44

Closed Friz64 closed 9 months ago

Friz64 commented 10 months ago

The ab_glyph documentation states:

A coverage value of 0.0 means the pixel is totally uncoverred by the glyph. A value of 1.0 or greater means fully coverred.

On my machine, this currently results in too high of a alpha value in "self-overlapping" areas, as is especially noticeable in the 'x' and 't' in the following screenshot:

This PR makes it look correct:

Friz64 commented 9 months ago

Couldn't reproduce this on my laptop, even though it uses the same default font as my development box. I don't know why this is the case. Either way, we previously skipped over a detail in ab_glyph, and this PR corrects that.

PolyMeilex commented 9 months ago

Thanks!