VK_AMD_device_coherent_memory
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 Structures
New Enum Constants
VK_AMD_DEVICE_COHERENT_MEMORY_EXTENSION_NAME
VK_AMD_DEVICE_COHERENT_MEMORY_SPEC_VERSION
- Extending VkMemoryPropertyFlagBits:
VK_MEMORY_PROPERTY_DEVICE_COHERENT_BIT_AMD
VK_MEMORY_PROPERTY_DEVICE_UNCACHED_BIT_AMD
- Extending VkStructureType:
VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_COHERENT_MEMORY_FEATURES_AMD
Version History
- Revision 1, 2019-02-04 (Tobias Hector)
- Initial revision