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The Wakefield committers may hold off-line discussions from time-to-time. Since these meetings are just for the committers and invited wayland experts, summary minutes will be recorded here as time permits

Online Zoom Meeting 9am PDT Jan 4th  2023

Attendees: Niels de Graef, Kevin Rushforth, Victor D'yakov,  Alexey Ushakov, Alexander Zvegintsev

Alexander:

In December I did some testing regarding the "automated tests become manual on OL 9 because of confirmation for each screencapture".

How many user interactions (select display, click share screen button) are required to do this?

The answer is ~11k, so we are definitely not going to do this and will wait for the restore_token backport to 9.4.

Regarding not getting a displayChanged event after a setDisplayMode call:

On Ubuntu 22.04, we get a ConfigureNotify for the root window when we switch to a non-native resolution, but we don't get it when we switch back to the native resolution.

On Ubuntu 23.04 and 23.10 we get both notifications.

Alexey:

We are continuing our internal testing of Intellij Idea on JBR 21 + pure wayland prototype, so far so good. It is only software rendering for now, but for the IDE purposes it works pretty well.

Also, after our discussion with Phil,, we are rewriting our hardware accelerated code for Vulkan in C, it is less fun than it was before, but we are moving forward with this approach.

Niels:

Alexey, when you mentioned the software rendering, did you get things working?

Alexey:

Yes, it works fine. We use Wayland surfaces, and our java2d C loops to render geometry and stuff like that, Marlin for anti-aliasing rendering. It is able to support all the features that we have in Idea.

The funny thing is that it works better than X11 code.

We want to launch internal and external preview with non-default Wayland toolkit, provide proper VM options for some people who want to test it.

We already have some people from our tracker who have built our branches and launched Idea.

Of course there are some missing features, for example, we don't have some special shaders for better text rendering, but grayscale antialiasing works quite well.

I suppose that most of the work was done by the Wayland server, we present the stuff and in the actual Idea we don't need to pass rendering with hardware acceleration.

Probably with some crazy animations it would suffer.

Niels

I didn't expect such positive surprises at the beginning of the year. If it is necessary, I can ask people from Fedora community to test it. But I do not know how far we are from that.

Alexey:

It is not in the main OpenJDK repository, we do some regular syncs with the wakefield repository. And yes, it would be interesting, but it will probably require some manual patching of the distribution you provide.

Niels:

That's where RPM Fusion could come in, so if people want to test it, here's a random package you can install to see if it works for you, and if it doesn't you can go there and file a bug.

Alexey:

Sounds good, we can provide a current branch or prepare a special one in the wakefield for this purpose.

Online Zoom Meeting 9am PDT Dec 7th  2023

Attendees: Niels de Graef,  Victor D'yakov,   Alexey Ushakov, Philip Race,  Olivier Fourdan, Maxim Kartashev, Alexander Zvegintsev

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I have a question regarding the OL/RHEL 9, Red Hat empasized stability, but the version of Gnome doesn't seem to support the restore token functionality that we make important use of it the screen capture code.

It was added in later version of Gnome, which did not make into 9, and it seems to be dooming us never be able to test Red Hat Linux 9 in X11 compatibility mode. If is definitely the case that they won't be ever upgrade Gnome in 9?

Niels:

We usually keep packages the same, but we do backports when required. Specifically for the restore token I thought we solve this in 9.3(released few weeks ago). But if it isn't there you can always file a bug for that, and we can internally investigate it.

My advice would be to check the latest available.

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