RFR: 8303904: [macos]Transparent Windows Paint Wrong (Opaque, Pixelated) w/o Volatile Buffering

[Jeremy]

On Tue, 4 Feb 2025 00:07:48 GMT, anass baya <duke at openjdk.org> wrote:

> The PR includes two fix : 
> 1 - The first fix targets proper rendering of the transparent image.
> 2 - The second fix ensures the image is painted at the correct resolution to avoid pixelation.

src/java.desktop/macosx/classes/sun/java2d/opengl/CGLGraphicsConfig.java line 279:

> 277:             }
> 278:         };
> 279:     }

Should this new `createAcceleratedImage(..)` logic be moved to `CGraphicsConfig`?

This looks like copied and pasted code in two subclasses that could be abstracted into the parent class. (I could be wrong here; I just wanted to check opinions...?)

It looks like these two classes (MTLGraphicsConfig and CGLGraphicsConfig) are the only subclasses for CGraphicsConfig.

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PR Review Comment: https://git.openjdk.org/jdk/pull/23430#discussion_r1940699051