> This is a false assumption. Existing GL drivers do a lot of hard work to compensate for platform-specific (or even chip-specific) quirks and limitations. Whi

> This is a false assumption. Existing GL drivers do a lot of hard work to compensate for platform-specific (or even chip-specific) quirks and limitations. While it may be possible for GL stacks to do this, real mobile and embedded GL stacks tend to barely function at all. I highly doubt they do much more than try to extract maximum straight line performance for synthetic benchmarks within their budget. The reason Vulkan can have an outsize effect on power consumption is that it can allow renderer work to be spread across several threads. Running two cores at 60% the clock rate will typically cost considerably less power than running one at a higher frequency. This is an explicit (and accomplished) goal of mobile vendors in supporting Vulkan.