# VkPhysicalDeviceMemoryDecompressionPropertiesNV(3) Manual Page

## Name

VkPhysicalDeviceMemoryDecompressionPropertiesNV - Structure describing supported memory decompression methods by an implementation

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## C Specification

The `VkPhysicalDeviceMemoryDecompressionPropertiesNV` structure is defined as:

    // Provided by VK_NV_memory_decompression
    typedef struct VkPhysicalDeviceMemoryDecompressionPropertiesNV {
        VkStructureType                       sType;
        void*                                 pNext;
        VkMemoryDecompressionMethodFlagsNV    decompressionMethods;
        uint64_t                              maxDecompressionIndirectCount;
    } VkPhysicalDeviceMemoryDecompressionPropertiesNV;

## Members

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

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

- `decompressionMethods` is a bitmask of VkMemoryDecompressionMethodFlagBitsNV specifying memory decompression methods supported by the implementation.

- `maxDecompressionIndirectCount` specifies the maximum supported count value in the `countBuffer` of vkCmdDecompressMemoryIndirectCountNV

## Description

If the `VkPhysicalDeviceMemoryDecompressionPropertiesNV` 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-VkPhysicalDeviceMemoryDecompressionPropertiesNV-sType-sType
  `sType` must be `VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_MEMORY_DECOMPRESSION_PROPERTIES_NV`

## See Also

VK_NV_memory_decompression, VkMemoryDecompressionMethodFlagsNV, 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