[PATCH v2 0/6] MR7758: win32u: Introduce a generic pbuffer implementation.

[Rémi Bernon]

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  v2: win32u: Add a nulldrv pbuffer stub implementation.
      winemac: Use the generic pbuffer implementation.
      winewayland: Use the generic pbuffer implementation.
      win32u: Introduce a generic pbuffer implementation from winex11.
      opengl32/tests: Add more pbuffer tests.
      win32u: Handle some pixel format initialization.
 
https://gitlab.winehq.org/wine/wine/-/merge_requests/7758