vkGetRandROutputDisplayEXT(3)

# vkGetRandROutputDisplayEXT(3) Manual Page

## Name

vkGetRandROutputDisplayEXT - Query the VkDisplayKHR corresponding to an X11 RandR Output

## C Specification

When acquiring displays from an X11 server, an application may also wish to enumerate and identify them using a native handle rather than a `VkDisplayKHR` handle. To determine the `VkDisplayKHR` handle corresponding to an X11 RandR Output, call:

    VkResult vkGetRandROutputDisplayEXT(
        VkPhysicalDevice                            physicalDevice,
        Display*                                    dpy,
        RROutput                                    rrOutput,
        VkDisplayKHR*                               pDisplay);

## Parameters

- `physicalDevice` The physical device to query the display handle on.

- `dpy` A connection to the X11 server from which `rrOutput` was queried.

- `rrOutput` An X11 RandR output ID.

- `pDisplay` The corresponding VkDisplayKHR handle will be returned here.

## Description

If there is no VkDisplayKHR corresponding to `rrOutput` on `physicalDevice`, VK_NULL_HANDLE must be returned in `pDisplay`.

Valid Usage (Implicit)

- `physicalDevice` must be a valid `VkPhysicalDevice` handle

- `dpy` must be a valid pointer to a `Display` value

- `pDisplay` must be a valid pointer to a `VkDisplayKHR` handle

Return Codes

On success, this command returns

  - `VK_SUCCESS`

## See Also

VkDisplayKHR, VkPhysicalDevice

## Document Notes

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.

## Copyright

Copyright (c) 2014-2019 Khronos Group. This work is licensed under a Creative Commons Attribution 4.0 International License.