VK_VALVE_descriptor_set_host_mapping(3)

# VK_VALVE_descriptor_set_host_mapping(3) Manual Page

## Name

VK_VALVE_descriptor_set_host_mapping - device extension

## Registered Extension Number

421

## Revision

1

## Ratification Status

Not ratified

## Extension and Version Dependencies

VK_KHR_get_physical_device_properties2
or
Vulkan Version 1.1

## Special Use

- D3D support

## Contact

- Hans-Kristian Arntzen [GitHub]HansKristian-Work

## Other Extension Metadata

Last Modified Date

  2022-02-22

IP Status

  No known IP claims.

Contributors

  - Hans-Kristian Arntzen, Valve

## Description

This extension allows applications to directly query a host pointer for a VkDescriptorSet which can be used to copy descriptors between descriptor sets without the use of an API command. Memory offsets and sizes for descriptors can be queried from a VkDescriptorSetLayout as well.

Note | There is currently no specification language written for this extension. The links to APIs defined by the extension are to stubs that only include generated content such as API declarations and implicit valid usage statements.

Note | This extension is only intended for use in specific embedded environments with known implementation details, and is therefore undocumented.

## New Commands

- vkGetDescriptorSetHostMappingVALVE

- vkGetDescriptorSetLayoutHostMappingInfoVALVE

## New Structures

- VkDescriptorSetBindingReferenceVALVE

- VkDescriptorSetLayoutHostMappingInfoVALVE

- Extending VkPhysicalDeviceFeatures2, VkDeviceCreateInfo:

  - VkPhysicalDeviceDescriptorSetHostMappingFeaturesVALVE

## New Enum Constants

- `VK_VALVE_DESCRIPTOR_SET_HOST_MAPPING_EXTENSION_NAME`

- `VK_VALVE_DESCRIPTOR_SET_HOST_MAPPING_SPEC_VERSION`

- Extending VkStructureType:

  - VK_STRUCTURE_TYPE_DESCRIPTOR_SET_BINDING_REFERENCE_VALVE

  - VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_HOST_MAPPING_INFO_VALVE

  - VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_DESCRIPTOR_SET_HOST_MAPPING_FEATURES_VALVE

## Version History

- Revision 1, 2022-02-22 (Hans-Kristian Arntzen)

  - Initial specification

## 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