Comment by zozbot234

The Linux framebuffer device is a legacy thing which doesn't mesh with the way modern graphics chipsets work. GPUs today are practically glorified sprites engines where a "framebuffer", a "texture" and a "sprite" are essentially one and the same in implementation, and new entities can be created by compositing ("blitting") existing ones with arbitrary 3D transformations, alpha-blending, anti-aliasing etc. You don't want to be limited to a single frame-buffer with pixel-level access and everything being drawn/blitted by software, that would be dog-slow.