The XR_FB_swapchain_update_state_vulkan extension.

This extension enables the application to modify and query Vulkan-specific mutable state associated with a swapchain, examples include:

• On platforms where composition runs in a separate process from the application, swapchains must be created in a cross-process friendly way. In such cases, the texture image memory may be shared between processes, but the texture state may not; and, an explicit mechanism to synchronize this texture state between the application and the compositor is required.

In order to enable the functionality of this extension, the application must pass the name of the extension into CreateInstance via the XrInstanceCreateInfo enabledExtensionNames parameter as indicated in the extensions section.