Having some thoughts about Vulkan and how to model the Vulkan async programming model in language constructs to enable language-level async Vulkan programming...
What if there was a construct to, for example, suspend on a VkFence in Kotlin? Surely that can't be too hard to abstract over.
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Similarly in Rust, a VkFence signal Future could use an atomic semaphore to signal from an IO dispatcher that it has become unblocked as a result of a successful await on the VkFence, so the next call to poll will be Poll::Ready(()). Then, you can do any sort of async programming around it.
In Kotlin, I almost wonder if you could use the continuations API to construct VkCommandBuffer procedurally using a DSL and have them automatically resolve resources used and map into a submittable VkCommandBuffer by evaluating the full continuation.