On: Apple added an orange dot that’s a showstopper for...

[nitrogen]

Are they capable of realtime GPU-rendered graphics out of the box, or just video?

[chrisseaton → nitrogen]

You can render on your GPU to a texture, then stream that texture to these devices. No different to rendering to your screen and then streaming and saving to disk, as you would do if you were screen capturing.

[dkonofalski → nitrogen]

They need a GPU to function. They are just input/output devices.