Intel's GPUs are fairly well-documented at https://01.org/linuxgraphics/documentation/hardware-specification-prms https://01.org/linuxgraphics/documentation/har

Intel's GPUs are fairly well-documented at https://01.org/linuxgraphics/documentation/hardware-specification-prms https://01.org/linuxgraphics/documentation/hardware-specific... IMO, writing some Vulkan (it being a thin layer over what a modern GPU's "actually" doing) would be good to get fundamentals down first, not the least of which because you'll have the validation layers to yell at you for incorrect usage instead of getting mysterious GPU behavior.