# VK_GOOGLE_surfaceless_query(3) Manual Page

## Name

VK_GOOGLE_surfaceless_query - instance extension

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## Registered Extension Number

434

## Revision

2

## Ratification Status

Not ratified

## Extension and Version Dependencies

VK_KHR_surface

## Special Use

- OpenGL / ES support

## Contact

- Shahbaz Youssefi [GitHub]syoussefi

## Extension Proposal

VK_GOOGLE_surfaceless_query

## Other Extension Metadata

Last Modified Date

  2022-08-03

IP Status

  No known IP claims.

Contributors

  - Ian Elliott, Google

  - Shahbaz Youssefi, Google

  - James Jones, NVIDIA

## Description

This extension allows the vkGetPhysicalDeviceSurfaceFormatsKHR and vkGetPhysicalDeviceSurfacePresentModesKHR functions to accept VK_NULL_HANDLE as their `surface` parameter, allowing potential surface formats, color spaces and present modes to be queried without providing a surface. Identically, vkGetPhysicalDeviceSurfaceFormats2KHR, vkGetPhysicalDeviceSurfacePresentModes2EXT, and vkGetPhysicalDeviceSurfaceCapabilities2KHR would accept VK_NULL_HANDLE in VkPhysicalDeviceSurfaceInfo2KHR::`surface`. This can only be supported on platforms where the results of these queries are surface-agnostic and a single presentation engine is the implicit target of all present operations.

## New Enum Constants

- `VK_GOOGLE_SURFACELESS_QUERY_EXTENSION_NAME`

- `VK_GOOGLE_SURFACELESS_QUERY_SPEC_VERSION`

## Version History

- Revision 1, 2021-12-14 (Shahbaz Youssefi)

  - Internal revisions

- Revision 2, 2022-08-03 (Shahbaz Youssefi)

  - Precisions to which parts of the query responses are defined when surfaceless

## 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 2014-2024 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0