vkImportSemaphoreFdKHR

To import a semaphore payload from a POSIX file descriptor, call:

VkResult vkImportSemaphoreFdKHR(
    VkDevice device,
    const VkImportSemaphoreFdInfoKHR* pImportSemaphoreFdInfo);

• device is the logical device that created the semaphore.
• pImportSemaphoreFdInfo is a pointer to a VkImportSemaphoreFdInfoKHR structure specifying the semaphore and import parameters.

Importing a semaphore payload from a file descriptor transfers ownership of the file descriptor from the application to the Vulkan implementation. The application must not perform any operations on the file descriptor after a successful import.

Applications can import the same semaphore payload into multiple instances of Vulkan, into the same instance from which it was exported, and multiple times into a given Vulkan instance.