pub unsafe extern "system" fn vkAllocateCommandBuffers(
device: VkDevice,
pAllocateInfo: *const VkCommandBufferAllocateInfo,
pCommandBuffers: *mut VkCommandBuffer,
) -> VkResultpub unsafe extern "system" fn vkAllocateCommandBuffers(
device: VkDevice,
pAllocateInfo: *const VkCommandBufferAllocateInfo,
pCommandBuffers: *mut VkCommandBuffer,
) -> VkResult