How to build AIR game for Linux?

General

I packed my previous game, Idle Tower Bulder,for Linux, and it was fully working on my virtual machine with Ubuntu 20: https://airapport.itch.io/idle-tower-builder

The reason of the white screen after Start is pressed of Farm and Mine, I assume, is connected with the textures size. The texture atlas is 2048x4096, while all the textures of Idle Tower Builder are 2048x2048.

pol2095

What Return stage.starling.context.driverInfo ?

General

I'm getting _starling.context= null on both Linux and Windows. But now I found out, that after the completion of loading big texture atlas, I'm receiving error #3683, will check what it is and how to handle it.

General

Oh, yes, so, it is "Texture too big"

General

So, I tried to use Context3DProfile.BASELINE_EXTENDED as the profile parameter for Starling creation. But in this case I get Starling Fatal error right from the start.

General

And here's what I get from Capabilities on Linux machine:
OS: Linux
cpuAddressSize: 64
cpuArchitecture: x86
manufacturer: Adobe Linux
pixelAspectRatio: 0.9984202211690363
playerType: Desktop
screenDPI: 72
supports32BitProcesses: false
supports64BitProcesses: true
version: LNX 33,1,1,575

General

Summarized my experience here: https://www.reddit.com/r/as3/comments/p9vqd2/building_air_game_for_linux_working_experience/

phanxgames

I have followed along with your steps (independently, but same journey).
I have also found that I cannot get the Context3D rendering to work properly with textures over 2048x2048.

I'm curious. When you ran your game with textures under 2048x2048 did it say it was running as software too? Also the Starling.context.totalGPUMemory reports 0 for me. What does it report for you?
My Starling.context.driverInfo says "Software Hw_disabled=unavailable (Baseline Constrained)".
Its possible this is an issue on my end as I may have my graphic drivers not setup correctly on my Linux computer.

I hope that the Linux SDK can be updated soon to support larger textures and move out of software mode. I know it says its "as-is" in the release notes, but my community is very excited for native Linux builds of my game!

General

phanxgames oh, that's great that you registered a feature request on AIR Github!

I will check, what will I receive from these calls on Linux. When pol2095 suggested t check driverInfo, I thought, I needed to check Starling.current.context, which returned null.

I will check, what Starling.context.driverInfo and Starling.context.totalGPUMemory will return.

General

phanxgames So, the driverInfo shows: Software Hw_disabled=unavailable (Baseline Constrained)
totalGPUMemory: 54172658

dwohlhart

I tried to use the Linux SDK for packaging a Linux bundle, but I always get the error:
Failed to load the AIR Runtime
The command is:
adt -package -target bundle app app.air
The same thing works on Windows and Mac with the respective runtimes.
Does somebody have a hint what to do ?

mfrasier

dwohlhart From the release notes:

No “shared runtime” support: applications would need to be built as ‘bundle’ packages with the
captive runtimes

Have you specified captive runtime as part of your command?

pol2095

I able to create *.deb Debian(Ubuntu, ...) and *.rpm (Fedora, Red Hat, CentOS) with the bundle generated on Ubuntu 20.

dwohlhart

As far as I know -target bundle is the command to integrate a captive runtime.
I have been able to build an .air package, but this would need a shared runtime on Linux.

pol2095

@General
Software Hw_disabled=unavailable (Baseline Constrained) is fixed now, see here

An other problem is Air app doesn't support HiDPI, Air is unusable on 4K screen on Linux.
I created an issue here.

General

I'm trying to build my game with AIR 50.2.3.1 and that version crashes right after the preloader.

Last time I used AIR 33.1.1.758 to build a Linux game, and when I run that version it works well.

Game builds can be found here: https://airapport.itch.io/farm-and-mine (scroll down to the downloads section)
The version which crashes: FarmAndMineLinuxCrash
The version which does not crash: FarmAndMineLinux

Crash log from Linux machine: https://pastebin.com/XBjUtjgX

One difference that I noticed: the executable file in the version which does not crash is considered as "executable" in properties and is run by double-clicking, and in the version which crashes it is "shared library", and doesn't run by double-clicking, I could run it only via the terminal.

To build and test I'm using a Virtual Box machine with ubuntu-20.04.6

Who has Linux machine, could you please check if you get the same behaviour like I do? And maybe I'm missing something with the building proicess?

pol2095

I tried on a Linux Machine (Ubuntu 22.04), I have the same behavior.
I don't have exactly the same home menu in your 2 apps, the crash app has an additional exit button.

General

pol2095 Thank you! Well, yes, since Feb 2022 I added some features to the PC version.

So they both worked on Ubuntu 22.04 or they both crashed?

Also, how did they react to pressing Esc button? Do they change from full screen to windowed mode?

pol2095

FarmAndMineLinux seems working correctly
Esc button change from full screen to windowed mode

FarmAndMineLinuxCrash sometimes crash after the preloader, sometimes on the home menu when I click on a button

Are you tried AIR 50.2.3.1 ?

General

pol2095 Thank you!
So, building with 50.2.2.6 results with correct build which is detected as "executable" by Ubuntu and can be run with double-click from GUI and does not cause the crash.

Building with 50.2.3.1 results with a build which is detected as shared library (application/x-sharedlib), after double-click in the Ubuntu GUI it doesn't run by itself but asks for the associated app, and if run from the Terminal it crashes after the preloader.

I'll use 50.2.2.6 for now, will update my games for Linux soon.

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