RFR: 8269806: Emoji rendering on Linux

[Phil Race]

On Sun, 22 Aug 2021 00:42:26 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
>
> @prrace could you take a look, please?

@YaaZ nothing has really happened here in > 2 months. When can we expect an update ?

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