On Mon, 27 Mar 2023 21:45:08 GMT, Jeremy <[email protected]> wrote:

> The original write-up contains two complaints:
> 1. The window is opaque, so pixels that should be transparent are black.
> 2. The window is the wrong resolution. On a 200% resolution monitor it 
> renders as if it were 100% (so it looks pixelated).
> 
> I recommend splitting this up into separate tickets.
> 
> This PR addresses the first (probably most offensive) issue: the window is 
> now transparent.
> 
> I experimented with a change that resolves the second issue (image 
> resolution) here:
> https://github.com/openjdk/jdk/commit/90735b7c01c66268776998c1b6aedc3250427002
> 
> ... that works, but IMO that looks riskier and should be part of a separate 
> discussion.
> 
> I only have a Mac configured right now to test against, so I've confirmed the 
> MTLGraphicsConfig and CGLGraphicsConfig changes. The other GraphicsConfig 
> changes are identical, but I haven't confirmed that this new test passes in 
> those environments. (I did confirm that those GraphicsConfig files appear to 
> support getColorModel(Transparency.TRANSLUCENT), so I'm optimistic they'll be 
> OK.

Alan, I may be confused. Does VAqua rely on turning off volatile buffering?

Or your comment might (?) make more sense if it's for my other PR ([for 
8303950](https://github.com/openjdk/jdk/pull/12993)) that relates to this 
method:

https://github.com/openjdk/jdk/blob/a8871f5d26e5cb42c031c7b736ec30b1b147a2bc/src/java.desktop/share/classes/java/awt/Window.java#L3946-L3960

(Also: thanks for mentioning VAqua! I'll check it out. I was a big fan of 
Werner's Quaqua work a decade ago at another job.)

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PR Comment: https://git.openjdk.org/jdk/pull/13196#issuecomment-1500695845

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