> It's just GPL Linux. "Just" GPL Linux encompasses myriad library versions, kernel versions, driver versions and varied hardware. > I feel like there is a ga

> It's just GPL Linux. "Just" GPL Linux encompasses myriad library versions, kernel versions, driver versions and varied hardware. > I feel like there is a gap of understanding how a HAL works here. Just because you have a HAL doesn't mean that you don't get different behavior and crashes with different numbers of CPUs/concurrency or other hardware beneath. Modern GPUs are also pretty complicated beasts, and assuming that's fully abstracted is a mistake. And this all leaves aside the myriad of other problems you can have with the ensemble of software running on the machine that interacts with the game (directly or indirectly). Being able to test and make one restricted platform work well is a far different beast than covering the huge mass of variation users create on their own machines.