[beagle3]

The original incarnations of RDP, going back 20 years and more, preferred graphics when it could. Back then, it was more bandwidth efficient, and most programs actually used the GDI primitives to draw directly onto the screen, so it actually worked.

But IIRC, by 2007, it switched completely to sending tiles just like VNC.

However, if you read the protocol descriptions, you get the wrong idea that primitives are still used.

Similarly, most X11 clients have been doing everything client side for ages, but many people still believe that peimitives dominate.