PFN_vkUpdateDescriptorSets

Undocumented in source but is binding to an external library. You might be able to learn more by searching the web for its name.
nothrow @nogc extern (System)
alias PFN_vkUpdateDescriptorSets = void function
(
VkDevice device
,,
const(VkWriteDescriptorSet)* pDescriptorWrites
,,
const(VkCopyDescriptorSet)* pDescriptorCopies
)

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