[PATCH v5 0/6] MR8498: win32u: Implement generic EGL driver pbuffer surface.

[Rémi Bernon (＠rbernon)]

Instead of https://gitlab.winehq.org/wine/wine/-/merge_requests/8496, leaving context sharing for later.

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  v5: win32u: Remove now unnecessary opengl_drawable hdc member.
      winewayland: Use a distinct wayland_pbuffer struct for pbuffers.
      win32u: Implement generic EGL driver pbuffer surface.
      win32u: Avoid releasing opengl drawable within drawables_lock.
      win32u: Avoid calling detach, flush or swap on pbuffer drawables.
      winemac: Remove now unnecessary pbuffer tracking.

https://gitlab.winehq.org/wine/wine/-/merge_requests/8498