RFR: 8269806: Emoji rendering on Linux

Mon Nov 8 13:58:44 UTC 2021

On Thu, 15 Jul 2021 17:29:01 GMT, Nikita Gubarkov <duke at openjdk.java.net> wrote:

> It was implemented in JetBrains Runtime a year ago and was ported & refactored for this PR
> It includes:
> - Bitmap glyph loading via Freetype
> - Manual scaling & transformation of bitmap glyphs with nearest-neighbor or bilinear-mipmap style algorithms depending on the text antialiasing hint
> - Storing BGRA glyphs in glyph cache & rendering them as plain images, as currently used XRender text drawing functions doesn't support colored glyphs
> - Small fixes in related code like null-checks which could cause NPE & comment typos

Hi! Sorry, just was busy with other work, but I'm going to get back to this in 1-2 weeks. BTW in the meantime I implemented emoji for JetBrains Runtime on Windows and will create a PR here after I deal with this one.

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PR: https://git.openjdk.java.net/jdk/pull/4798