I understand what you're saying, that the situation is not completely clear-cut (especially what Broadcom is doing). But Intel has most definitely documented t

I understand what you're saying, that the situation is not completely clear-cut (especially what Broadcom is doing). But Intel has most definitely documented their GPU registers and hardware – not just the intel open source driver: https://01.org/linuxgraphics/documentation/driver-documentation-prms https://01.org/linuxgraphics/documentation/driver-documentat...