VK_NV_low_latency
Other Extension Metadata
Last Modified Date
2026-06-26
Contributors
- Charles Hansen, NVIDIA
- Will Campbell, NVIDIA
Description
This extension adds the VkQueryLowLatencySupportNV structure, a structure used to query support for NVIDIA Reflex.
Revision 2 adds entry points exposing the legacy NVIDIA Reflex implementation. These are only intended for use by compatibility layers, applications should not call these methods directly.
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.
New Commands
- vkGetLatencyTimingsLegacyNV
- vkGetSleepStatusLegacyNV
- vkLatencySleepLegacyNV
- vkQueueNotifyOutOfBandLegacyNV
- vkSetLatencyMarkerLegacyNV
- vkSetLatencySleepModeLegacyNV
- vkShutdownLatencyDeviceLegacyNV
New Structures
New Enum Constants
VK_NV_LOW_LATENCY_EXTENSION_NAMEVK_NV_LOW_LATENCY_SPEC_VERSION- Extending VkStructureType:
VK_STRUCTURE_TYPE_QUERY_LOW_LATENCY_SUPPORT_NV
Issues
1) Why does VkQueryLowLatencySupportNV have output parameters in an
input chain?
RESOLVED: We are stuck with this for legacy reasons - we are aware this is bad behavior and this should not be used as a precedent for future extensions.
Version History
- Revision 1, 2023-02-10 (Charles Hansen)
- Internal revisions
- Revision 2, 2026-06-26 (Will Campbell)
- Added LegacyNV entry points