linux export discussion

keszegh

i thought i will open a general thread for linux export instead of per issue. The thing i noticed is that the second window i create with Screen does appear but nothing is rendered on it. (the same project works fine on windows).

keszegh

i tried to use qt linux export meanwhile, but it gives the following error (i think it worked at some point in the past):
error while loading shared libraries: libQt6DBus.so.6: cannot open shared object file: No such file or directory

even though the required file is in the root folder of my app.

hgy29

I tried just now with this simple code:

local a=Screen.new(0) a:setContent(Pixel.new(0xFF0000,1,100,100)) --a:setState(Screen.STATE_NORMAL) a:setTitle("Autre fenêtre")

And it worked for me on Linux (Debian 11), native export, not tried on Linux QT Player

keszegh

hgy29 said:

I tried just now with this simple code:

local a=Screen.new(0) a:setContent(Pixel.new(0xFF0000,1,100,100)) --a:setState(Screen.STATE_NORMAL) a:setTitle("Autre fenêtre")

And it worked for me on Linux (Debian 11), native export, not tried on Linux QT Player

thanks. i will experiment also with some simpler project to see what goes wrong and when. i have a newish linux mint.

anz idea about the qt export problem?

hgy29

keszegh said:

i tried to use qt linux export meanwhile, but it gives the following error (i think it worked at some point in the past):
error while loading shared libraries: libQt6DBus.so.6: cannot open shared object file: No such file or directory

even though the required file is in the root folder of my app.

I suspect a library path issue, can you try to run it through a shell script similar to 'Gideros Player.sh' in your Gideros installation folder ?

keszegh

using an sh file makes it run but crashes for me right after opening the window with this error:
./fragmenter.sh: line 1: 7224 Segmentation fault (core dumped) ./fragmenter

keszegh

ok, so back to the screen problem on normal linux export:
using linux gideros studio 2024.06, in player it works but not in export.
if i export from linux gideros studio version 2023.09 then it still worked.
i also use Viewport so maybe the problem lies there instead of Screen.

keszegh

now not from windows but from linux gideros studio i managed to export a working qt linux export, there the projection window works as expected but trying to initialize midi it crashes. "module luamidi not found."

keszegh

i'd need either to solve the screen/viewport issue in native linux export or at least the luamidi issue in the qt linux export to have a working linux version of my app.
thanks for your efforts.

hgy29

I can reproduce your screen issue on native Linux, I am trying to figure out what happens here. Seems like something in main scene leaves OpenGL in a state where second Screen can’t draw. Something is probably not reset as it ought to be on Linux.

keszegh

@hgy29 , great, being able to reproduce the issue is half the success. thanks for working on it

keszegh

btw the luamidi problem on qt linux isn't just some minor issue?

hgy29

I guess so for luamidi, but I suspect the Screen issue may be related to the general OpenGL render issue which occurs sometimes in other contexts, so I’d like to corner it

hgy29

Fixed issue in Screen, actually in OpenGL backend: https://github.com/gideros/gideros/commit/5b2c05c0c360f4c227bb5091353db6b238cc8953

MoKaLux

thank you hgy29

keszegh

thanks @hgy29 , i would be happy to test it, even more, to publish the fix to my users.

hgy29

Yes, @keszegh, here is a patched template executable based on last Gideros release: http://apps.giderosmobile.com/pre/LinuxTemplate
It should replace the one in Templates/linux/LinuxTemplate folder

keszegh

with the new template it works even by exporting from windows. great job, hopefully this OpenGL thing won't bother you too much, in the last few months it kept popping up with new and new issues.

keszegh

the luamidi qt export issue should not be forgotten though, although not urgent. will you look into it soon or should i make a github issue?
thanks @hgy29

hgy29

Turns out luamidi was just not built for QtLinux. I fixed that, and here is the plugin: http://apps.giderosmobile.com/pre/luamidi.tgz

keszegh

hgy29 said:

Turns out luamidi was just not built for QtLinux. I fixed that, and here is the plugin: http://apps.giderosmobile.com/pre/luamidi.tgz

perfect. ty

keszegh

btw when setting a screen to fullscreen on linux and polling getSize right after, i get the old size. only after a bit of time do i get the correct size. (unlike in windows/mac where there is no such issue)
i could workaround this easily, but still it's worth to mention.