Virtualbox 3D progress has been unfortunately slow for a long time. It was kind of anticipated with Oracle's acquisition, as their laser focus on legal engagements and consulting pushes a lot of technical projects to the back burner.<p>I'd love to see a bit more alignment between VirtualBox and Qemu. Even though KVM and Qemu's virtualized graphics acceleration is still a WIP, having a shared code base could accelerate the project on things like SPICE (<a href="https://www.spice-space.org/download.html" rel="nofollow">https://www.spice-space.org/download.html</a>) and Virgl (<a href="https://virgil3d.github.io/" rel="nofollow">https://virgil3d.github.io/</a>). Unfortunately, I think it uses a lot of Linux-specific technologies (e.g. KVM, Gallium), so the likelihood of sharing at that level seems pretty low. Although, supposedly Gallium isn't locked into Windows.<p>Theoretically, if we could agree on a common host-guest interface for a virtual graphics adapter, it could share the guest implementations and host implementations could be added as needed. And it could be reused in multiple projects. But it always seems that this is the tech that never gets sufficient cross-project collaboration. And given the many differences between vendor hardware, a portable interface has been difficult. Maybe Vulkan will provide enough low-level functionality to ease the abstraction?