Thanks for the update, it's nice to get some insights into what's happening internally.
For those of us not familiar with GBM, V4L2, etc. Can someone up-level a bit as to what all this work will mean for users? For example, how would a Pi3 user benefit from these changes?
It might allow a return to Chromium across all devices as will allow standalone mode via the Chromium GBM backend.
Generic Buffer Management via Mesa on the RockPro64 is the first time I have seen OpenGLES work with the Rockpro64 dunno how it is for you Pi guys but for the RK3399 & RK3288 finally its seems to be optimised and its quick.