Do you know performance impact from this? While we will need to take some hit, it would be good to know how much and perhaps have some plans for mitigations. We still have direct calls in winevulkan that we will need to get rid of (either by optimizing further syscall thunks or batching command buffers). For OpenGL, batching is more tricky and there is hypothesis that OpenGL generally requires more calls (so more syscall thunking). We may need to live with it, but it would be good to have some data instead of speculations for better judgement.