VkExportMemoryAllocateInfo(3)

# VkExportMemoryAllocateInfo(3) Manual Page

## Name

VkExportMemoryAllocateInfo - Specify exportable handle types for a device memory object

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## C Specification

When allocating memory whose payload may be exported to another process or Vulkan instance, add a VkExportMemoryAllocateInfo structure to the `pNext` chain of the VkMemoryAllocateInfo structure, specifying the handle types that may be exported.

The VkExportMemoryAllocateInfo structure is defined as:

    // Provided by VK_VERSION_1_1
    typedef struct VkExportMemoryAllocateInfo {
        VkStructureType                    sType;
        const void*                        pNext;
        VkExternalMemoryHandleTypeFlags    handleTypes;
    } VkExportMemoryAllocateInfo;

or the equivalent

    // Provided by VK_KHR_external_memory
    typedef VkExportMemoryAllocateInfo VkExportMemoryAllocateInfoKHR;

## Members

- `sType` is the type of this structure.

- `pNext` is `NULL` or a pointer to a structure extending this structure.

- `handleTypes` is a bitmask of VkExternalMemoryHandleTypeFlagBits specifying one or more memory handle types the application can export from the resulting allocation. The application can request multiple handle types for the same allocation.

## Description

Valid Usage

- VUID-VkExportMemoryAllocateInfo-handleTypes-00656
  The bits in `handleTypes` must be supported and compatible, as reported by VkExternalImageFormatProperties or VkExternalBufferProperties

Valid Usage (Implicit)

- VUID-VkExportMemoryAllocateInfo-sType-sType
  `sType` must be `VK_STRUCTURE_TYPE_EXPORT_MEMORY_ALLOCATE_INFO`

- VUID-VkExportMemoryAllocateInfo-handleTypes-parameter
  `handleTypes` must be a valid combination of VkExternalMemoryHandleTypeFlagBits values

## See Also

VkExternalMemoryHandleTypeFlags, VkStructureType

## 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 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0