Unanswered user makes question their MS thesis and answers self 2 years later
Immediate mode rendering is similar to what the Firefox WebRender changes are about:<p><a href="https://hacks.mozilla.org/2017/10/the-whole-web-at-maximum-fps-how-webrender-gets-rid-of-jank/" rel="nofollow">https://hacks.mozilla.org/2017/10/the-whole-web-at-maximum-f...</a>