FYI, setting `NvOptimusEnablement` and `AmdPowerXpressRequestHighPerformance` have been the canonical way on Windows, `__NV_PRIME_RENDER_OFFLOAD` + `__GLX_VENDOR_LIBRARY_NAME` on Linux. Though not an OpenGL feature per se, as you mentioned.
FYI, setting `NvOptimusEnablement` and `AmdPowerXpressRequestHighPerformance` have been the canonical way on Windows, `__NV_PRIME_RENDER_OFFLOAD` + `__GLX_VENDOR_LIBRARY_NAME` on Linux. Though not an OpenGL feature per se, as you mentioned.
That would be the vendor extensions they mentioned.