# VkMutableDescriptorTypeListEXT(3) Manual Page

## Name

VkMutableDescriptorTypeListEXT - Structure describing descriptor types that a given descriptor may mutate to

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## C Specification

The list of potential descriptor types a given mutable descriptor can mutate to is passed in a `VkMutableDescriptorTypeListEXT` structure.

The `VkMutableDescriptorTypeListEXT` structure is defined as:

    // Provided by VK_EXT_mutable_descriptor_type
    typedef struct VkMutableDescriptorTypeListEXT {
        uint32_t                   descriptorTypeCount;
        const VkDescriptorType*    pDescriptorTypes;
    } VkMutableDescriptorTypeListEXT;

or the equivalent

    // Provided by VK_VALVE_mutable_descriptor_type
    typedef VkMutableDescriptorTypeListEXT VkMutableDescriptorTypeListVALVE;

## Members

- `descriptorTypeCount` is the number of elements in `pDescriptorTypes`.

- `pDescriptorTypes` is `NULL` or a pointer to an array of `descriptorTypeCount` VkDescriptorType values defining which descriptor types a given binding may mutate to.

## Description

Valid Usage

- VUID-VkMutableDescriptorTypeListEXT-descriptorTypeCount-04597
  `descriptorTypeCount` must not be `0` if the corresponding binding is of `VK_DESCRIPTOR_TYPE_MUTABLE_EXT`

- VUID-VkMutableDescriptorTypeListEXT-pDescriptorTypes-04598
  `pDescriptorTypes` must be a valid pointer to an array of `descriptorTypeCount` valid, unique VkDescriptorType values if the given binding is of `VK_DESCRIPTOR_TYPE_MUTABLE_EXT` type

- VUID-VkMutableDescriptorTypeListEXT-descriptorTypeCount-04599
  `descriptorTypeCount` must be `0` if the corresponding binding is not of `VK_DESCRIPTOR_TYPE_MUTABLE_EXT`

- VUID-VkMutableDescriptorTypeListEXT-pDescriptorTypes-04600
  `pDescriptorTypes` must not contain `VK_DESCRIPTOR_TYPE_MUTABLE_EXT`

- VUID-VkMutableDescriptorTypeListEXT-pDescriptorTypes-04601
  `pDescriptorTypes` must not contain `VK_DESCRIPTOR_TYPE_STORAGE_BUFFER_DYNAMIC`

- VUID-VkMutableDescriptorTypeListEXT-pDescriptorTypes-04602
  `pDescriptorTypes` must not contain `VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC`

- VUID-VkMutableDescriptorTypeListEXT-pDescriptorTypes-04603
  `pDescriptorTypes` must not contain `VK_DESCRIPTOR_TYPE_INLINE_UNIFORM_BLOCK`

Valid Usage (Implicit)

- VUID-VkMutableDescriptorTypeListEXT-pDescriptorTypes-parameter
  If `descriptorTypeCount` is not `0`, `pDescriptorTypes` must be a valid pointer to an array of `descriptorTypeCount` valid VkDescriptorType values

## See Also

VK_EXT_mutable_descriptor_type, VK_VALVE_mutable_descriptor_type, VkDescriptorType, VkMutableDescriptorTypeCreateInfoEXT

## 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