# VkPhysicalDeviceVulkanMemoryModelFeatures(3) Manual Page

## Name

VkPhysicalDeviceVulkanMemoryModelFeatures - Structure describing features supported by the memory model

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## C Specification

The `VkPhysicalDeviceVulkanMemoryModelFeatures` structure is defined as:

    // Provided by VK_VERSION_1_2
    typedef struct VkPhysicalDeviceVulkanMemoryModelFeatures {
        VkStructureType    sType;
        void*              pNext;
        VkBool32           vulkanMemoryModel;
        VkBool32           vulkanMemoryModelDeviceScope;
        VkBool32           vulkanMemoryModelAvailabilityVisibilityChains;
    } VkPhysicalDeviceVulkanMemoryModelFeatures;

or the equivalent

    // Provided by VK_KHR_vulkan_memory_model
    typedef VkPhysicalDeviceVulkanMemoryModelFeatures VkPhysicalDeviceVulkanMemoryModelFeaturesKHR;

## Members

This structure describes the following features:

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

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

## Description

- `vulkanMemoryModel` indicates whether shader modules can declare the `VulkanMemoryModel` capability.

- `vulkanMemoryModelDeviceScope` indicates whether the Vulkan Memory Model can use `Device` scope synchronization. This also indicates whether shader modules can declare the `VulkanMemoryModelDeviceScope` capability.

- `vulkanMemoryModelAvailabilityVisibilityChains` indicates whether the Vulkan Memory Model can use availability and visibility chains with more than one element.

If the `VkPhysicalDeviceVulkanMemoryModelFeaturesKHR` structure is included in the `pNext` chain of the VkPhysicalDeviceFeatures2 structure passed to vkGetPhysicalDeviceFeatures2, it is filled in to indicate whether each corresponding feature is supported. `VkPhysicalDeviceVulkanMemoryModelFeaturesKHR` can also be used in the `pNext` chain of VkDeviceCreateInfo to selectively enable these features.

Valid Usage (Implicit)

- VUID-VkPhysicalDeviceVulkanMemoryModelFeatures-sType-sType
  `sType` must be `VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_VULKAN_MEMORY_MODEL_FEATURES`

## See Also

VK_VERSION_1_2, 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 2014-2024 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0