VkExternalMemoryProperties(3)

# VkExternalMemoryProperties(3) Manual Page

## Name

VkExternalMemoryProperties - Structure specifying external memory handle type capabilities

## C Specification

The `VkExternalMemoryProperties` structure is defined as:

    typedef struct VkExternalMemoryProperties {
        VkExternalMemoryFeatureFlags       externalMemoryFeatures;
        VkExternalMemoryHandleTypeFlags    exportFromImportedHandleTypes;
        VkExternalMemoryHandleTypeFlags    compatibleHandleTypes;
    } VkExternalMemoryProperties;

or the equivalent

    typedef VkExternalMemoryProperties VkExternalMemoryPropertiesKHR;

## Members

- `externalMemoryFeatures` is a bitmask of VkExternalMemoryFeatureFlagBits specifying the features of `handleType`.

- `exportFromImportedHandleTypes` is a bitmask of VkExternalMemoryHandleTypeFlagBits specifying which types of imported handle `handleType` can be exported from.

- `compatibleHandleTypes` is a bitmask of VkExternalMemoryHandleTypeFlagBits specifying handle types which can be specified at the same time as `handleType` when creating an image compatible with external memory.

## Description

`compatibleHandleTypes` must include at least `handleType`. Inclusion of a handle type in `compatibleHandleTypes` does not imply the values returned in VkImageFormatProperties2 will be the same when VkPhysicalDeviceExternalImageFormatInfo::`handleType` is set to that type. The application is responsible for querying the capabilities of all handle types intended for concurrent use in a single image and intersecting them to obtain the compatible set of capabilities.

## See Also

VkExternalBufferProperties, VkExternalImageFormatProperties, VkExternalMemoryFeatureFlags, VkExternalMemoryHandleTypeFlags

## Document Notes

For more information, see the Vulkan Specification

This page is extracted from the Vulkan Specification. Fixes and changes should be made to the Specification, not directly.

## Copyright

Copyright (c) 2014-2020 Khronos Group. This work is licensed under a Creative Commons Attribution 4.0 International License.