RFR: 8329820: [Linux] Prefer EGL over GLX [v17]

[Thiago Milczarek Sayao]

On Sun, 25 Aug 2024 20:59:43 GMT, Thiago Milczarek Sayao <tsayao at openjdk.org> wrote:

>> Wayland implementation will require EGL. 
>> 
>> EGL works with Xorg as well. The idea is to be EGL first and if it fails, fallback to GLX. A force flag `prism.es2.forceGLX=true` is available.
>> 
>> 
>> See:
>> [Switching the Linux graphics stack from GLX to EGL](https://mozillagfx.wordpress.com/2021/10/30/switching-the-linux-graphics-stack-from-glx-to-egl/)
>> [Prefer EGL to GLX for the GL support on X11](https://gitlab.gnome.org/GNOME/gtk/-/merge_requests/3540)
>
> Thiago Milczarek Sayao has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Fix crash when running `SetSceneScalingTest`

EGL requires an `EGLSurface` to be created, and the most obvious place is in `createDrawable`. The problem is that `DrawableInfo` is never freed, so the `SetSceneScalingTest` fails when another Scene is created on the same Stage with `EGL_BAD_ALLOC` - That's because `createDrawable` is called again and it already has a `EGLSurface` associated with it. 
So I need to resolve #1586 first.

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PR Comment: https://git.openjdk.org/jfx/pull/1381#issuecomment-2388602287