HiDPI scaling support for Linux

[tomires]

Are there any plans to include support for scaling in editor2? I have tried modifying both scale-factor and text-scale-factor keys in dconf to no avail [as seen on the following screenshot].

[ragnard-king]

HiDPI support for Linux is unfortunately missing in JavaFX, however it is coming in JDK9: https://bugs.openjdk.java.net/browse/JDK-8137050

[ghost]

I've tried the latest editor2 release and I'm noticing that it's still not scaled on OpenJDK 9. Are there other steps involved in enabling HiDPI support on Linux?

[vlaaad]

It's because defold provides it's own jdk (which is 8). There is hope they will migrate to jdk 11 though, since it's a new LTS release.

[thejustinwalsh]

Everything is still so tiny! +1 for some form of scaling.

[vlaaad]

By the way, Defold editor migrated to jdk 11 in 2019 and HiDPI works on my Ubuntu

[thejustinwalsh]

For whatever reason if I set global fractional scaling in gnome 3.36 on Ubuntu 20.04 the Defold editor actually gets smaller the higher the scale goes. :man_shrugging:

So here is the fix. You need to pass -Dglass.gtk.uiScale=1.25 where 1.25 equals the amount you want to scale by. 1.25 is a nice compromise on a 4K monitor at 100% in gnome.

To do this edit the config file sitting next to Defold and find the vmargs under the [launcher] section. I simply prepended -Dglass.gtk.uiScale=1.25, before the -Dfile.encoding=UTF-8 arg.

vmargs = -Dglass.gtk.uiScale=1.25,-Dfile.encoding=UTF-8,-Djna.nosys=true,-Ddefold.launcherpath=${bootstrap.launcherpath},-Ddefold.resourcespath=${bootstrap.resourcespath},-Ddefold.version=${build.version},-Ddefold.editor.sha1=${build.editor_sha1},-Ddefold.engine.sha1=${build.engine_sha1},-Ddefold.buildtime=${build.time},-Ddefold.channel=${build.channel},-Djava.net.preferIPv4Stack=true,-Dsun.net.client.defaultConnectTimeout=30000,-Dsun.net.client.defaultReadTimeout=30000,-Djogl.texture.notexrect=true,-Dglass.accessible.force=false,--illegal-access=warn,--add-opens=java.base/java.lang=ALL-UNNAMED,--add-opens=java.desktop/sun.awt=ALL-UNNAMED,--add-opens=java.desktop/sun.java2d.opengl=ALL-UNNAMED,--add-opens=java.xml/com.sun.org.apache.xerces.internal.jaxp=ALL-UNNAMED

As discovered by this change here: https://hg.openjdk.java.net/openjfx/9-dev/rt/rev/919f60d167c9#l1.51

Unfortunately upon every upgrade the config gets wiped and I loose my scaling setting. Exposing some kind of UI scale configuration in the editor itself would still be cool.