VkDeviceMemoryOverallocationCreateInfoAMD(3)

# VkDeviceMemoryOverallocationCreateInfoAMD(3) Manual Page

## Name

VkDeviceMemoryOverallocationCreateInfoAMD - Specify memory overallocation behavior for a Vulkan device

## C Specification

To specify whether device memory allocation is allowed beyond the size reported by VkPhysicalDeviceMemoryProperties, add a VkDeviceMemoryOverallocationCreateInfoAMD structure to the `pNext` chain of the VkDeviceCreateInfo structure. If this structure is not specified, it is as if the VK_MEMORY_OVERALLOCATION_BEHAVIOR_DEFAULT_AMD value is used.

    // Provided by VK_AMD_memory_overallocation_behavior
    typedef struct VkDeviceMemoryOverallocationCreateInfoAMD {
        VkStructureType                      sType;
        const void*                          pNext;
        VkMemoryOverallocationBehaviorAMD    overallocationBehavior;
    } VkDeviceMemoryOverallocationCreateInfoAMD;

## Members

- `sType` is a VkStructureType value identifying this structure.

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

- `overallocationBehavior` is the desired overallocation behavior.

## Description

Valid Usage (Implicit)

- VUID-VkDeviceMemoryOverallocationCreateInfoAMD-sType-sType
  `sType` must be VK_STRUCTURE_TYPE_DEVICE_MEMORY_OVERALLOCATION_CREATE_INFO_AMD

- VUID-VkDeviceMemoryOverallocationCreateInfoAMD-overallocationBehavior-parameter
  `overallocationBehavior` must be a valid VkMemoryOverallocationBehaviorAMD value

Structure Chaining

Extends the structure

  - VkDeviceCreateInfo

## See Also

VK_AMD_memory_overallocation_behavior, VkMemoryOverallocationBehaviorAMD, 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 2014-2026 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0