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Semantics.

What's the point of "using 1.3" if you can't use the coolest new extensions because they're optional? Yeah you get dynamic rendering and, uh, nothing else new? Saying "it has Vulkan 1.3" is not really saying a lot, since way too much stuff is optional.




Off the top of my head: Dynamic rendering, timeline semaphores, buffer device address, shader subgroups, push descriptors, descriptor indexing.

These are mostly "software" features and they are all required in Vk1.3, and a huge improvement over what there was before it.

Mesh shaders and ray tracing need hw support, but there's a lot of improvement in the API you get without latest hw.




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