The latest Zink development code paired with the forthcoming “Copper” work is yielding an OpenGL-on-Vulkan implementation that when running on NVIDIA’s proprietary Vulkan driver is even able to outperform NVIDIA’s own proprietary OpenGL driver for at least one notable Linux game…

Source: Phoronix – Experimental Zink On NVIDIA’s Vulkan Driver Capable Of Outperforming OpenGL Driver