RFR: 8298167: Opacity in WebView not working anymore

[Roman Marchenko]

On Wed, 11 Jan 2023 07:49:50 GMT, Roman Marchenko <rmarchenko at openjdk.org> wrote:

>> There was refactoring in WebKit's GraphicsContext class (nativecode) https://github.com/WebKit/WebKit/commit/1733b8bc3dff7595ab8e42561fc0f20a2b8fee63 
>> 
>> GraphicsContextJava's methods begin/endPlatformTransparencyLayers weren't adapted after GraphicsContext's refactoring integration into JFX. As the result, the methods were not invoked, so TransparencyLayer couldn't be added to a rendering queue.
>> 
>> Now the methods are fixed to be used properly in GraphicsContext inheritance chain.
>
> force-pushed to trigger the tests.

> @wkia Would it be possible to provide a unit test that fails before and passes after this fix?

@kevinrushforth  I will try, I guess it will take time.

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PR: https://git.openjdk.org/jfx/pull/992