VK_SEC_ubm_surface(3)

# VK_SEC_ubm_surface(3) Manual Page

## Name

VK_SEC_ubm_surface - instance extension

## Registered Extension Number

665

## Revision

1

## Ratification Status

Not ratified

## Extension and Version Dependencies

VK_KHR_surface

## Contact

- Minji Choe [GitHub]minjichoe

## Other Extension Metadata

Last Modified Date

  2026-01-26

IP Status

  No known IP claims.

Contributors

  - Ralph Potter, Samsung

  - Isaac Hong, Samsung

  - Jaeyoung Park, Samsung

  - Changhwan Lee, Samsung

  - Minji Choe, Samsung

  - Krzysztof Buben, Samsung

  - Mikolaj Chadzynski, Samsung

  - Bohdan Soproniuk, Samsung

## Description

The `VK_SEC_ubm_surface` extension is an instance extension. It provides a mechanism to create a VkSurfaceKHR object (defined by the `VK_KHR_surface` extension) that refers to a UBM `ubm_surface`, as well as a query to determine support for rendering to a UBM compositor.

## New Commands

- vkCreateUbmSurfaceSEC

- vkGetPhysicalDeviceUbmPresentationSupportSEC

## New Structures

- VkUbmSurfaceCreateInfoSEC

## New Bitmasks

- VkUbmSurfaceCreateFlagsSEC

## New Enum Constants

- `VK_SEC_UBM_SURFACE_EXTENSION_NAME`

- `VK_SEC_UBM_SURFACE_SPEC_VERSION`

- Extending VkStructureType:

  - VK_STRUCTURE_TYPE_UBM_SURFACE_CREATE_INFO_SEC

## Issues

1) Does UBM need a way to query for compatibility between a particular physical device and a specific screen? This would be a more general query than vkGetPhysicalDeviceSurfaceSupportKHR: If it returned VK_TRUE, then the physical device could be assumed to support presentation to any window on that screen.

RESOLVED: Yes. vkGetPhysicalDeviceUbmPresentationSupportSEC was added to address this issue.

## Version History

- Revision 1, 2026-01-30 (Krzysztof Buben)

  - Initial draft, based on the previous contents of VK_EXT_KHR_swapchain (later renamed VK_EXT_KHR_surface).

## See Also

No cross-references are available

## Document Notes

For more information, see the Vulkan Specification.

This page is a generated document. Fixes and changes should be made to the generator scripts, not directly.

## Copyright

Copyright 2014-2026 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0