Hi, I have filed - https://bugs.openjdk.java.net/browse/JDK-8267226 <https://bugs.openjdk.java.net/browse/JDK-8267226> for the reported observation. We will need a test program to see the issue.
Regards, Ajit > On 07-May-2021, at 3:34 AM, Philip Race <philip.r...@oracle.com> wrote: > > > I’ve only tried a couple of apps and only this test program has shown the > > problem. > > Did you try to attach something ? the lists strip attachments. > Sent it directly to me and I'll see if I can add it to a bug report. > > -phil. > > On 5/6/21 2:50 PM, Alan Snyder wrote: >> >>> On May 6, 2021, at 1:45 PM, Philip Race <philip.r...@oracle.com> wrote: >>> >>> Alan, >>> >>> I am not sure this is a known issue. We'll need a lot more details. >> I figured you would. :-) >> >> >>> What is your h+w and OS update ? >> iMac 27 inch 2020 Radeon Pro 5500 XT 8 GB >> 11.3.1 >> >> >>> Is this all windows in an app or just the first one ? >> Definitely not just the first one, but not all of them, either. >> >> >>> Does it matter what the window content is ? >> It might. The app is a test program that can create any of 30 different >> kinds of windows on demand. >> >> So far, I’ve seen the problem in 11 kinds of windows but not in the others. >> No obvious pattern in the content. >> >> The problem is most likely to happen the first time a given window is shown, >> but it can also happen on later instances of the same kind of window. >> I just tried a new kind of window and it happened the first 3 times, but not >> the 4th, then about 50% of the time. >> I tried creating a different window about 25 times, and it happened on #1, >> #4, and #25. >> >>> Any app or some specific app ? >> I’ve only tried a couple of apps and only this test program has shown the >> problem. >> >> >> >>> -phil. >>> >>> >>> On 4/29/21 7:18 PM, Alan Snyder wrote: >>>> I am seeing some unusual behavior (in b20) that I do not see using OpenGL >>>> (or using JDK 16). >>>> >>>> Sometimes when I open a new window, the window appears blank (except for >>>> the title bar) for about two seconds before the content appears. >>>> >>>> This behavior is not consistent. Opening another instance of the same >>>> window might be fast or slow. It happens with a variety of window classes. >>>> >>>> In JDK16 and using OpenGL, the content always appears immediately. >>>> >>>> >>>> >>>> >>>> >>>>> On Apr 23, 2021, at 1:13 PM, Philip Race <philip.r...@oracle.com> wrote: >>>>> >>>>> FYI to the wider community that may not subscribe to the client mailing >>>>> lists, nor appreciate too much cross-posting. >>>>> >>>>> -phil. >>>>> >>>>> >>>>> -------- Forwarded Message -------- >>>>> Subject: Heads up : JDK 17 b19 through b22 will use Metal instead of >>>>> OpenGL for Java 2D rendering on macOS. >>>>> Date: Fri, 23 Apr 2021 13:10:46 -0700 >>>>> From: Philip Race <philip.r...@oracle.com> >>>>> To: 2d-dev@openjdk.java.net <2d-dev@openjdk.java.net> >>>>> CC: lanai-...@openjdk.java.net, swing-...@openjdk.java.net >>>>> <swing-...@openjdk.java.net>, awt-...@openjdk.java.net >>>>> <awt-...@openjdk.java.net> >>>>> >>>>> >>>>> >>>>> >>>>> Heads up to anyone who is testing JDK 17 for running apps on macOS. >>>>> Starting with build 19 [1], JDK 17 for macOS is *temporarily* switched >>>>> from using OpenGL >>>>> to using Apple's Metal API for Java 2D rendering. This should be >>>>> invisible to applications. >>>>> We expect to revert this temporary switch in JDK 17 build 23,meaning b22 >>>>> will be the last build with Metal as default. >>>>> >>>>> See JEP 382 [2] for more information about how Metal is used by JDK. >>>>> >>>>> If you are running any kind of 2D / Swing/ AWT UI application on macOS, >>>>> and see any rendering related problems >>>>> starting with JDK 17 b19, please do report them to us at either the usual >>>>> bug submission channel [3], >>>>> or on the 2d-dev@openjdk.java.net OpenJDK mailing list [4] >>>>> Please be ready to provide us with a test case and screen shots. >>>>> >>>>> You may also set "-Dsun.java2d.opengl=true" to re-enable OpenGL - which >>>>> implicitly disables Metal - >>>>> to confirm that any problem you see is a Metal related rendering glitch. >>>>> >>>>> I will also forward this email to jdk-...@openjdk.java.net >>>>> >>>>> -Phil. >>>>> >>>>> [1] https://jdk.java.net/17/ >>>>> [2] https://openjdk.java.net/jeps/382 <https://openjdk.java.net/jeps/382> >>>>> [3] https://bugreport.java.com/bugreport/ >>>>> [4] https://mail.openjdk.java.net/mailman/listinfo/2d-dev >>>>> >
