C Specification

To determine which displays a plane is usable with, call

// Provided by VK_KHR_display
VkResult vkGetDisplayPlaneSupportedDisplaysKHR(
    VkPhysicalDevice                            physicalDevice,
    uint32_t                                    planeIndex,
    uint32_t*                                   pDisplayCount,
    VkDisplayKHR*                               pDisplays);


  • physicalDevice is a physical device.

  • planeIndex is the plane which the application wishes to use, and must be in the range [0, physical device plane count - 1].

  • pDisplayCount is a pointer to an integer related to the number of displays available or queried, as described below.

  • pDisplays is either NULL or a pointer to an array of VkDisplayKHR handles.


If pDisplays is NULL, then the number of displays usable with the specified planeIndex for physicalDevice is returned in pDisplayCount. Otherwise, pDisplayCount must point to a variable set by the user to the number of elements in the pDisplays array, and on return the variable is overwritten with the number of handles actually written to pDisplays. If the value of pDisplayCount is less than the number of usable display-plane pairs for physicalDevice, at most pDisplayCount handles will be written, and VK_INCOMPLETE will be returned instead of VK_SUCCESS, to indicate that not all the available pairs were returned.

Valid Usage
  • VUID-vkGetDisplayPlaneSupportedDisplaysKHR-planeIndex-01249
    planeIndex must be less than the number of display planes supported by the device as determined by calling vkGetPhysicalDeviceDisplayPlanePropertiesKHR

Valid Usage (Implicit)
  • VUID-vkGetDisplayPlaneSupportedDisplaysKHR-physicalDevice-parameter
    physicalDevice must be a valid VkPhysicalDevice handle

  • VUID-vkGetDisplayPlaneSupportedDisplaysKHR-pDisplayCount-parameter
    pDisplayCount must be a valid pointer to a uint32_t value

  • VUID-vkGetDisplayPlaneSupportedDisplaysKHR-pDisplays-parameter
    If the value referenced by pDisplayCount is not 0, and pDisplays is not NULL, pDisplays must be a valid pointer to an array of pDisplayCount VkDisplayKHR handles

Return Codes
On success, this command returns


On failure, this command returns


See Also

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 2014-2024 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0