# VkPhysicalDeviceProtectedMemoryProperties(3) Manual Page

## Name

VkPhysicalDeviceProtectedMemoryProperties - Structure describing protected memory properties that can be supported by an implementation

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## C Specification

The `VkPhysicalDeviceProtectedMemoryProperties` structure is defined as:

    // Provided by VK_VERSION_1_1
    typedef struct VkPhysicalDeviceProtectedMemoryProperties {
        VkStructureType    sType;
        void*              pNext;
        VkBool32           protectedNoFault;
    } VkPhysicalDeviceProtectedMemoryProperties;

## Members

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

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

## Description

- `protectedNoFault` specifies how an implementation behaves when an application attempts to write to unprotected memory in a protected queue operation, read from protected memory in an unprotected queue operation, or perform a query in a protected queue operation. If this limit is `VK_TRUE`, such writes will be discarded or have undefined values written, reads and queries will return undefined values. If this limit is `VK_FALSE`, applications must not perform these operations. See https://registry.khronos.org/vulkan/specs/latest/html/vkspec.html#memory-protected-access-rules for more information.

If the `VkPhysicalDeviceProtectedMemoryProperties` structure is included in the `pNext` chain of the VkPhysicalDeviceProperties2 structure passed to vkGetPhysicalDeviceProperties2, it is filled in with each corresponding implementation-dependent property.

Valid Usage (Implicit)

- VUID-VkPhysicalDeviceProtectedMemoryProperties-sType-sType
  `sType` must be `VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PROTECTED_MEMORY_PROPERTIES`

## See Also

VK_VERSION_1_1, VkBool32, 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 2014-2025 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0