(Haiku developer here.) There is one hardware accelerated driver, for Radeon Southern Islands; but it's third-party, out-of-tree, and not particularly simple to set up and get running. So, not really.

Thanks for the response. Is there much hope for this to change at some point? I would love to eventually use Haiku on actual hardware, and the lack of video acceleration is the main thing that discourages me from giving it a go.

Well, there's nothing preventing it from happening if that's what you mean. It's just a difficult thing to do, and requires effort (and expertise.)

I might take a crack at porting the KMS/DRM drivers from Linux eventually, but it's not near the top of my TODO list.