VkPhysicalDeviceMemoryDecompressionPropertiesEXT(3)

# VkPhysicalDeviceMemoryDecompressionPropertiesEXT(3) Manual Page

## Name

VkPhysicalDeviceMemoryDecompressionPropertiesEXT - Structure describing supported memory decompression methods by an implementation

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## C Specification

The `VkPhysicalDeviceMemoryDecompressionPropertiesEXT` structure is defined as:

    // Provided by VK_EXT_memory_decompression
    typedef struct VkPhysicalDeviceMemoryDecompressionPropertiesEXT {
        VkStructureType                        sType;
        void*                                  pNext;
        VkMemoryDecompressionMethodFlagsEXT    decompressionMethods;
        uint64_t                               maxDecompressionIndirectCount;
    } VkPhysicalDeviceMemoryDecompressionPropertiesEXT;

    // Provided by VK_NV_memory_decompression
    // Equivalent to VkPhysicalDeviceMemoryDecompressionPropertiesEXT
    typedef VkPhysicalDeviceMemoryDecompressionPropertiesEXT 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 VkMemoryDecompressionMethodFlagBitsEXT specifying memory decompression methods supported by the implementation.

- `maxDecompressionIndirectCount` specifies the maximum supported count value identified by either vkCmdDecompressMemoryIndirectCountEXT::`maxDecompressionCount` or the value specified in vkCmdDecompressMemoryIndirectCountEXT::`indirectCommandsCountAddress`

## Description

If `memoryDecompression` feature is supported, `decompressionMethods` must have at least one bit set.

If the `VkPhysicalDeviceMemoryDecompressionPropertiesEXT` 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-VkPhysicalDeviceMemoryDecompressionPropertiesEXT-sType-sType
  `sType` must be VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_MEMORY_DECOMPRESSION_PROPERTIES_EXT

Structure Chaining

Extends the structure

  - VkPhysicalDeviceProperties2

## See Also

VK_EXT_memory_decompression, VK_NV_memory_decompression, VkMemoryDecompressionMethodFlagsEXT, 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