Vulkan has been a consideration from the earliest architecturing steps done in WebRender. So, the internal pipelines are all set up to be mapped to Vulkan's pip

Vulkan has been a consideration from the earliest architecturing steps done in WebRender. So, the internal pipelines are all set up to be mapped to Vulkan's pipelines. It's actually OpenGL which fits less into the architecture, but it's still easier to just bundle WebRender's pipelines all together and then throw that into OpenGL.