It's the use case that requires the bare minimum functionality. Godot might require more recent lower-level APIs than the other GUI toolkits, but if the use ca

It's the use case that requires the bare minimum functionality. Godot might require more recent lower-level APIs than the other GUI toolkits, but if the use cases are similar, then it wouldn't require more performance out of them than the other GUI toolkits would. Using software-based implementations of those APIs would more than likely be sufficient, meaning that there's no dependence on any specific class of GPU.