When it comes to OpenGL extension support, the Zink generic OpenGL-on-Vulkan implementation now has as robust coverage as core Mesa offers and what is implemented by the LLVMpipe software driver, RadeonSI Gallium3D, and the Intel i965 drivers…

Source: Phoronix – Zink OpenGL-on-Vulkan Now Offers As Broad OpenGL Coverage As RadeonSI, Intel