Yep. However, if you're trying to replicate something that's already built on top of an existing piece of software using the existing API's, I'd assume you woul

Yep. However, if you're trying to replicate something that's already built on top of an existing piece of software using the existing API's, I'd assume you wouldn't have to patch the platform just to build on top of it. However, as tinco explained[0], it seems that there is no "standard graphics api" for linux, and the "link" between window servers and graphics drivers is hard coded. So you do in fact have to patch the video driver to provide support for a new window server (on Linux at least).