# VkMutableDescriptorTypeCreateInfoEXT(3) Manual Page

## Name

VkMutableDescriptorTypeCreateInfoEXT - Structure describing the list of possible active descriptor types for mutable type descriptors

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## C Specification

If the `pNext` chain of a VkDescriptorSetLayoutCreateInfo or VkDescriptorPoolCreateInfo structure includes a VkMutableDescriptorTypeCreateInfoEXT structure, then that structure specifies Information about the possible descriptor types for mutable descriptor types.

The `VkMutableDescriptorTypeCreateInfoEXT` structure is defined as:

    // Provided by VK_EXT_mutable_descriptor_type
    typedef struct VkMutableDescriptorTypeCreateInfoEXT {
        VkStructureType                          sType;
        const void*                              pNext;
        uint32_t                                 mutableDescriptorTypeListCount;
        const VkMutableDescriptorTypeListEXT*    pMutableDescriptorTypeLists;
    } VkMutableDescriptorTypeCreateInfoEXT;

or the equivalent

    // Provided by VK_VALVE_mutable_descriptor_type
    typedef VkMutableDescriptorTypeCreateInfoEXT VkMutableDescriptorTypeCreateInfoVALVE;

## Members

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

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

- `mutableDescriptorTypeListCount` is the number of elements in `pMutableDescriptorTypeLists`.

- `pMutableDescriptorTypeLists` is a pointer to an array of `VkMutableDescriptorTypeListEXT` structures.

## Description

If `mutableDescriptorTypeListCount` is zero or if this structure is not included in the `pNext` chain, the VkMutableDescriptorTypeListEXT for each element is considered to be zero or `NULL` for each member. Otherwise, the descriptor set layout binding at VkDescriptorSetLayoutCreateInfo::`pBindings`[i] uses the descriptor type lists in VkMutableDescriptorTypeCreateInfoEXT::`pMutableDescriptorTypeLists`[i].

Valid Usage (Implicit)

- VUID-VkMutableDescriptorTypeCreateInfoEXT-sType-sType
  `sType` must be `VK_STRUCTURE_TYPE_MUTABLE_DESCRIPTOR_TYPE_CREATE_INFO_EXT`

- VUID-VkMutableDescriptorTypeCreateInfoEXT-pMutableDescriptorTypeLists-parameter
  If `mutableDescriptorTypeListCount` is not `0`, `pMutableDescriptorTypeLists` must be a valid pointer to an array of `mutableDescriptorTypeListCount` valid VkMutableDescriptorTypeListEXT structures

## See Also

VK_EXT_mutable_descriptor_type, VK_VALVE_mutable_descriptor_type, VkMutableDescriptorTypeListEXT, 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