Vulkan.Streamtype t = Vulkan_api.Stream.tval create : Sarek_vulkan__Vulkan_api.Device.t -> Vulkan_api.Stream.tval destroy : Vulkan_api.Stream.t -> unitval synchronize : Vulkan_api.Stream.t -> unitval default : Sarek_vulkan__Vulkan_api.Device.t -> Vulkan_api.Stream.t