On Mon, 7 Aug 2023 07:56:27 GMT, John Hendrikx <jhendr...@openjdk.org> wrote:

> > > both windows (using EmbeddedFrameBug class listed earlier) shows O100% 
> > > for primary retina screen (should be 200%).
> > 
> > 
> > @hjohn Seems like @andy-goryachev-oracle is telling it regressed after 
> > `updateSceneState` integration as previously he mentioned
> > [#1171 
> > (review)](https://github.com/openjdk/jfx/pull/1171#pullrequestreview-1522452579)
> > > getting the scales right on both monitors now (macOS)
> > > the image is rendered with no gaps.
> > > LGTM
> > 
> > 
> > So, it seems scaling swing-interop fix with`stage.setRenderScaleX/Y`was 
> > solving JDK-8274932 but not JDK-8222209 whereas your fix is solving both in 
> > windows but not solving JDK-8274932 in mac.. Since this seems to be about 
> > windows-toolkit `updateSceneState` , probably it's best to take it out from 
> > this PR and let it have only swing-interop change with 
> > `stage.setRenderScaleX/Y` and remove JDK-8222209 from this PR.. What you 
> > both suggest?
> 
> IMHO, calling `setRenderScaleX/Y` should never be done by JavaFX, unless it 
> is in response to a change in the ouput scale properties -- render scale is 
> for the user to change the render size. Calling them from JFXPanel is fixing 
> a symptom of the problem, not the actual problem. The ouput scales should be 
> correct as well (in fact, in 99% of the cases they will be the same as the 
> render scale, unless the user overrides the render scale).
> 
> So, JavaFX should be ensuring that the output scale is correct (which will 
> then be copied to the render scale).
> 
> This is why I was looking further, and why I recommended calling 
> `updateSceneState`, as in that way the output scales get changed, and, 
> consequently, the render scales are updated.

Any idea then why it would not work in macos? Did you test it there? Probably 
windows-toolkit has a native component where it needs some updation?

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PR Comment: https://git.openjdk.org/jfx/pull/1171#issuecomment-1667417424

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