From maxim.kartashev at jetbrains.com  Thu Jun  2 14:18:38 2022
From: maxim.kartashev at jetbrains.com (Maxim Kartashev)
Date: Thu, 2 Jun 2022 17:18:38 +0300
Subject: Another XWayland-related issue
Message-ID: <CAG0Tb0jDUo2BaiqQ39UA3EQrToM7zHG-GrrA9gDxA2YFywHL-A@mail.gmail.com>

I just filed a bug (8287731 [XWayland] Portions of window get painted with
solid white color) that has something to do with XRender implementation in
XWayland. The bug manifests itself as white rectangles appearing instead of
portions of the window that are painted from pre-created translucent
"compatible images" (GraphicsConfiguration.createCompatibleImage()). It
doesn't reproduce always, but shows up often enough. Disabling Glamor *or*
switching to the OpenGL pipeline makes the bug go away.

At this point it is still not clear whether this is a Java thing or
something's wrong with the XRender implementation inside Xorg or even
farther down the stack.

If you have seen this one before and/or have a suggestion on how to further
narrow down the bug's cause, please respond.

P.S. I have only looked at this inside a VMWare virtual machine instance,
so not 100% sure that this can be seen on "real" hardware.

Ref:
https://bugs.openjdk.java.net/browse/JDK-8287731

From ofourdan at redhat.com  Thu Jun  2 14:41:44 2022
From: ofourdan at redhat.com (Olivier Fourdan)
Date: Thu, 2 Jun 2022 16:41:44 +0200
Subject: Another XWayland-related issue
In-Reply-To: <CAG0Tb0jDUo2BaiqQ39UA3EQrToM7zHG-GrrA9gDxA2YFywHL-A@mail.gmail.com>
References: <CAG0Tb0jDUo2BaiqQ39UA3EQrToM7zHG-GrrA9gDxA2YFywHL-A@mail.gmail.com>
Message-ID: <CAP=2yyR+ZoamvJLMmEpSXw9X4ZKwb9a==j64VogokaqJg_DUZA@mail.gmail.com>

Hi Maxim,

On Thu, Jun 2, 2022 at 4:19 PM Maxim Kartashev
<maxim.kartashev at jetbrains.com> wrote:
> [?]
>
> If you have seen this one before and/or have a suggestion on how to further
> narrow down the bug's cause, please respond.
>
> P.S. I have only looked at this inside a VMWare virtual machine instance,
> so not 100% sure that this can be seen on "real" hardware.
>
> Ref:
> https://bugs.openjdk.java.net/browse/JDK-8287731

Since disabling glamor gets rid of the issue, then the root cause is
between GLAMOR (in the Xserver) and the underlying GL implementation.

For example I reckon the somehow similar rendering issue [2] reported
by Alexander is more of a GL implementation bug in the virtualization
stack than GLAMOR (GLAMOR being used by Xwayland and Xorg with
modesetting for example).

So to help narrow the issue, the next thing would be to reproduce on
real hardware.

FWIW, I just tried that on my intel laptop here and I could not
reproduce the issue, no matter how many times I repeated the test.

I also tried on an NVIDIA laptop with the NVIDIA proprietary driver
(to test another GL implementation, not just Mesa) and it works as
well.

So I suspect this is the same as with [2], it's possibly more of a GL
implementation issue in the virtualization stack.

Cheers
Olivier

[2] https://gitlab.freedesktop.org/xorg/xserver/-/issues/1333


From maxim.kartashev at jetbrains.com  Thu Jun  2 16:51:53 2022
From: maxim.kartashev at jetbrains.com (Maxim Kartashev)
Date: Thu, 2 Jun 2022 19:51:53 +0300
Subject: Another XWayland-related issue
In-Reply-To: <CAP=2yyR+ZoamvJLMmEpSXw9X4ZKwb9a==j64VogokaqJg_DUZA@mail.gmail.com>
References: <CAG0Tb0jDUo2BaiqQ39UA3EQrToM7zHG-GrrA9gDxA2YFywHL-A@mail.gmail.com>
 <CAP=2yyR+ZoamvJLMmEpSXw9X4ZKwb9a==j64VogokaqJg_DUZA@mail.gmail.com>
Message-ID: <CAG0Tb0hb7s475=WJo50JA2jn_TJAeY_KQEEvtNnBouGZi1quvA@mail.gmail.com>

Thanks for your analysis, Olivier!

FYI: I filed an XOrg issue here:
https://gitlab.freedesktop.org/xorg/xserver/-/issues/1349

On Thu, Jun 2, 2022 at 5:42 PM Olivier Fourdan <ofourdan at redhat.com> wrote:

> Hi Maxim,
>
> On Thu, Jun 2, 2022 at 4:19 PM Maxim Kartashev
> <maxim.kartashev at jetbrains.com> wrote:
> > [?]
> >
> > If you have seen this one before and/or have a suggestion on how to
> further
> > narrow down the bug's cause, please respond.
> >
> > P.S. I have only looked at this inside a VMWare virtual machine instance,
> > so not 100% sure that this can be seen on "real" hardware.
> >
> > Ref:
> > https://bugs.openjdk.java.net/browse/JDK-8287731
>
> Since disabling glamor gets rid of the issue, then the root cause is
> between GLAMOR (in the Xserver) and the underlying GL implementation.
>
> For example I reckon the somehow similar rendering issue [2] reported
> by Alexander is more of a GL implementation bug in the virtualization
> stack than GLAMOR (GLAMOR being used by Xwayland and Xorg with
> modesetting for example).
>
> So to help narrow the issue, the next thing would be to reproduce on
> real hardware.
>
> FWIW, I just tried that on my intel laptop here and I could not
> reproduce the issue, no matter how many times I repeated the test.
>
> I also tried on an NVIDIA laptop with the NVIDIA proprietary driver
> (to test another GL implementation, not just Mesa) and it works as
> well.
>
> So I suspect this is the same as with [2], it's possibly more of a GL
> implementation issue in the virtualization stack.
>
> Cheers
> Olivier
>
> [2] https://gitlab.freedesktop.org/xorg/xserver/-/issues/1333
>
>

From duke at openjdk.org  Thu Jun 30 09:57:16 2022
From: duke at openjdk.org (duke)
Date: Thu, 30 Jun 2022 09:57:16 GMT
Subject: git: openjdk/wakefield: pure_wl_toolkit: Improved
 sun.awt.wl.WLGraphicsEnvironment to support createCraphics()
Message-ID: <e8760447-0dfa-4499-b5a6-b1104b68f4e6@openjdk.org>

Changeset: 3d2576cc
Author:    Alexey Ushakov <alexey.ushakov at jetbrains.com>
Date:      2022-06-30 09:54:52 +0000
URL:       https://git.openjdk.org/wakefield/commit/3d2576cc490299c10fc097cf7e74d9743233618c

Improved sun.awt.wl.WLGraphicsEnvironment to support createCraphics()

! src/java.desktop/unix/classes/sun/awt/wl/WLGraphicsEnvironment.java


From duke at openjdk.org  Thu Jun 30 12:20:57 2022
From: duke at openjdk.org (duke)
Date: Thu, 30 Jun 2022 12:20:57 GMT
Subject: git: openjdk/wakefield: pure_wl_toolkit: Fixed crash on WLSD_Dispose
Message-ID: <b5212b00-f227-4d32-9288-514fe2f2a037@openjdk.org>

Changeset: 0bc3e256
Author:    Alexey Ushakov <alexey.ushakov at jetbrains.com>
Date:      2022-06-30 14:18:47 +0000
URL:       https://git.openjdk.org/wakefield/commit/0bc3e2567637114e3053ee0f3dd6190b8cd8f96f

Fixed crash on WLSD_Dispose

! src/java.desktop/unix/native/common/java2d/wl/WLSurfaceData.c


From duke at openjdk.org  Thu Jun 30 15:30:52 2022
From: duke at openjdk.org (duke)
Date: Thu, 30 Jun 2022 15:30:52 GMT
Subject: git: openjdk/wakefield: pure_wl_toolkit: Replaced crash in Robot with
 logging
Message-ID: <6328d5f6-2a34-43d4-b6cc-50f7724f10ed@openjdk.org>

Changeset: 453aaead
Author:    Alexey Ushakov <alexey.ushakov at jetbrains.com>
Date:      2022-06-30 17:30:21 +0000
URL:       https://git.openjdk.org/wakefield/commit/453aaeadd32f4b17bf80c19674ac7ed4509eff66

Replaced crash in Robot with logging

! src/java.desktop/unix/classes/sun/awt/wl/WLComponentPeer.java
! src/java.desktop/unix/native/libawt_wlawt/WLRobotPeer.c