[PATCH 0/7] MR6467: winex11: Implement vulkan DPI scaling and child window rendering.

[Rémi Bernon (＠rbernon)]

This does the same as https://gitlab.winehq.org/wine/wine/-/merge_requests/6398 but for Vulkan. It also implements vulkan child window rendering pretty much for free and supersedes https://gitlab.winehq.org/wine/wine/-/merge_requests/5573.

It is not completely optimal and there as missed opportunities to keep child windows on screen when no DPI scaling and no cropping is needed, but it would require to be smarter and have knowledge about the window clipping region, which will probably better be done in win32u. This is exactly the same for OpenGL, and it will probably be solved together.