[null-phnix]

Exactly. The cross-platform descriptor dance is one of those things that's invisible to people outside the pipeline but eats an absurd amount of dev time. You end up writing the same conversion logic three times for three platforms, each with its own failure modes and version quirks, and none of it has anything to do with the actual codec work.

Having Vulkan as the single surface for both the compute and the rendering side means one memory model, one synchronization story, one set of bugs to chase. That alone is worth the effort even before you get to the performance wins.