To import a semaphore payload from a POSIX file descriptor, call:
// Provided by VK_KHR_external_semaphore_fd VkResult vkImportSemaphoreFdKHR( VkDevice device, const VkImportSemaphoreFdInfoKHR* pImportSemaphoreFdInfo);
deviceis the logical device that created the semaphore.
pImportSemaphoreFdInfois 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.
For more information, see the Vulkan Specification
This page is extracted from the Vulkan Specification. Fixes and changes should be made to the Specification, not directly.