<AWT Dev> RFR: 8266079: Lanai: AlphaComposite shows differences on Metal compared to OpenGL
javalists at cbfiddle.com
Thu Jun 3 14:31:04 UTC 2021
My concern is that these latency problems are much more noticeable when the Metal pipeline is used.
See JDK-8267226 <https://bugs.openjdk.java.net/browse/JDK-8267226>.
> On Jun 3, 2021, at 7:13 AM, Alexey Ushakov <avu at openjdk.java.net> wrote:
> On Wed, 26 May 2021 13:49:24 GMT, Alexey Ushakov <avu at openjdk.org> wrote:
>> Set black color for underlying window background to perform correct blending operations in metal with window surface destination
>> _Mailing list message from [Alan Snyder](mailto:javalists at cbfiddle.com) on [awt-dev](mailto:awt-dev at mail.openjdk.java.net):_
>> Could the flashing problem be related to the timing problem described in JDK-8209329 <https://bugs.openjdk.java.net/browse/JDK-8209329>?
>> I have noticed occasional red flashes using Metal, which I suspect are caused by trying to render uninitialized data.
>> (I?m guessing that the red is a debugging aid provided by Apple. Previously, they used yellow.)
> Yes, blit encoder works asynchronously so we may have some latency before the actual content is presented to the window.
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