Emoji larger than 98px are not displayed

NEW
Unassigned

Status

()

P3
normal
6 months ago
6 days ago

People

(Reporter: tobi, Unassigned)

Tracking

62 Branch
All
Android
Points:
---

Firefox Tracking Flags

(Not tracked)

Details

(Reporter)

Description

6 months ago
User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:62.0) Gecko/20100101 Firefox/62.0
Build ID: 20180920131237
Firefox for Android

Steps to reproduce:

Open
https://tobireif.com/non_site_stuff/emoji_max-size_test/the_max_emoji_size_in_mobile_firefox62_is_98px.html
in Mobile Firefox 62.

At font-size 98px, the emoji are shown:
https://app.crossbrowsertesting.com/public/ib8393c20a124bac/livetests/14400965/snapshots/z8bdb506801b9bf03607

Open
https://tobireif.com/non_site_stuff/emoji_max-size_test/emoji_size_99px.html
in Mobile Firefox 62.



Actual results:

At font-size 99px, the emoji are not shown:
https://app.crossbrowsertesting.com/public/ib8393c20a124bac/livetests/14400970/snapshots/z50f2fc8f9b4cfeb0ebc


Expected results:

The emoji should be displayed up to font-sizes of 146px (the limit of Mobile Chrome 69) or larger if possible.

Also see
https://tobireif.com/posts/maximum_font_size_for_emoji/
Component: Untriaged → General
Product: Firefox → Firefox for Android
Version: 62 Branch → Firefox 62
Confirmed with Firefox 64.0a1 on a Nexus 5x running Android 8.1.0
Status: UNCONFIRMED → NEW
Component: General → Graphics: Text
Ever confirmed: true
OS: Unspecified → Android
Product: Firefox for Android → Core
Hardware: Unspecified → All
Summary: Maximum font size for emoji in mobile Firefox is too small → Emoji larger than 98px are not displayed
Version: Firefox 62 → 62 Branch
Confirmed on a recent 64.0a1 GeckoView Example build as well.
Priority: -- → P3
(Reporter)

Comment 3

2 months ago

I hope this issue can get fixed.

Jamie, can you look into this? My guess is this is an issue with the Skia font size limits, though I don't have an Android dev environment set up at the moment to investigate myself...

Flags: needinfo?(jnicol)
(Reporter)

Comment 5

11 days ago

I list some data at https://tobireif.com/posts/maximum_font_size_for_emoji/ , I'd be happy to update the info regarding Mobile Firefox as soon as it supports larger emoji.

Lee I'm really lost for where to even start looking for this, don't know the skia code at all. Do you have any pointers?

Flags: needinfo?(jnicol) → needinfo?(lsalzman)

(In reply to Jamie Nicol [:jnicol] from comment #6)

Lee I'm really lost for where to even start looking for this, don't know the skia code at all. Do you have any pointers?

First try and verify that the FillGlyphs call is getting to the DrawTargetSkia, and if so, find out where the request is getting short-circuited inside Skia.

Flags: needinfo?(lsalzman)
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