Anyone know what GPU "codegen" it's using on PC? Tech specs say GPU needs Direct3D 12.0 capable card, but I'm not convinced that's for GPU compute, but maybe it

Anyone know what GPU "codegen" it's using on PC? Tech specs say GPU needs Direct3D 12.0 capable card, but I'm not convinced that's for GPU compute, but maybe it is a compute shader?... I'd assume OpenCL for cross-platform (but then if they're specialising Metal for MacOS maybe they don't care about that, and are using Direct3D.