Registered Extension Number

230

Revision

1

Extension and Version Dependencies

  • Requires Vulkan 1.0

Other Extension Metadata

Last Modified Date

2019-02-04

Contributors
  • Ping Fu, AMD

  • Timothy Lottes, AMD

  • Tobias Hector, AMD

Description

This extension adds the device coherent and device uncached memory types. Any device accesses to device coherent memory are automatically made visible to any other device access. Device uncached memory indicates to applications that caches are disabled for a particular memory type, which guarantees device coherence.

Device coherent and uncached memory are expected to have lower performance for general access than non-device coherent memory, but can be useful in certain scenarios; particularly so for debugging.

New Enum Constants

  • Extending VkStructureType:

    • VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_COHERENT_MEMORY_FEATURES_AMD

  • Extending VkMemoryPropertyFlagBits:

    • VK_MEMORY_PROPERTY_DEVICE_COHERENT_BIT_AMD

    • VK_MEMORY_PROPERTY_DEVICE_UNCACHED_BIT_AMD

Version History

  • Revision 1, 2019-02-04 (Tobias Hector)

    • Initial revision

See Also

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.

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