There is rudimentary hardware acceleration for certain older GPUs that I own in wld (intel at https://github.com/michaelforney/wld/blob/master/intel.c and nouveau https://github.com/michaelforney/wld/blob/master/nouveau.c).

But, for everything else there is only software rendering via pixman. I started working on a new library called libblit that will support amdgpu, and I managed to draw some rectangles and textures, but there is still a ways to go on that: https://git.sr.ht/~mcf/libblit/tree/master/amdgpu