Re: [PATCH v4 0/8] MR6467: winex11: Implement vulkan DPI scaling and child window rendering.

[Rémi Bernon (＠rbernon)]

v2: Fix macOS build by moving the offscreen helpers that were conditionally built with OpenGL to a separate source, make the vulkan offscreen surface nature updatable as the surface isn't recreated and cannot be notified of new parent/children otherwise.