A Work-In-Progress Vulkan Driver For The Raspberry Pi / VC4
This is not to be confused with the next-gen VC5 driver stack (now known as "V3D") where Eric Anholt of Broadcom plans on Vulkan support via the BCMV driver as well as OpenCL plans and more for this much more capable Broadcom VideoCore graphics hardware we hope to find out of future Raspberry Pi generations. But a developer has been quietly working on a Vulkan driver for current-gen VC4-based Raspberry Pi boards.
There is the rpi-vulkan-driver on GitHub. While just three commits so far, one of them is a big initial code drop of the initial Vulkan code tailored towards the VC4 DRM driver interfaces. There is the initial test driver so far and test cases.
It will be interesting to see how much of Vulkan can be implemented for the Raspberry Pi / VC4 since generally OpenGL ES 3.1 hardware is considered capable of supporting this modern graphics/compute API but not OpenGL ES 2.0 as is the case with VC4.