# VkDescriptorUpdateTemplateCreateInfo(3) Manual Page

## Name

VkDescriptorUpdateTemplateCreateInfo - Structure specifying parameters of a newly created descriptor update template

## C Specification

The VkDescriptorUpdateTemplateCreateInfo structure is defined as:

    typedef struct VkDescriptorUpdateTemplateCreateInfo {
        VkStructureType                           sType;
        const void*                               pNext;
        VkDescriptorUpdateTemplateCreateFlags     flags;
        uint32_t                                  descriptorUpdateEntryCount;
        const VkDescriptorUpdateTemplateEntry*    pDescriptorUpdateEntries;
        VkDescriptorUpdateTemplateType            templateType;
        VkDescriptorSetLayout                     descriptorSetLayout;
        VkPipelineBindPoint                       pipelineBindPoint;
        VkPipelineLayout                          pipelineLayout;
        uint32_t                                  set;
    } VkDescriptorUpdateTemplateCreateInfo;

or the equivalent

    typedef VkDescriptorUpdateTemplateCreateInfo VkDescriptorUpdateTemplateCreateInfoKHR;

## Members

- `sType` is the type of this structure.

- `pNext` is `NULL` or a pointer to an extension-specific structure.

- `flags` is reserved for future use.

- `descriptorUpdateEntryCount` is the number of elements in the `pDescriptorUpdateEntries` array.

- `pDescriptorUpdateEntries` is a pointer to an array of VkDescriptorUpdateTemplateEntry structures describing the descriptors to be updated by the descriptor update template.

- `templateType` Specifies the type of the descriptor update template. If set to `VK_DESCRIPTOR_UPDATE_TEMPLATE_TYPE_DESCRIPTOR_SET` it can only be used to update descriptor sets with a fixed `descriptorSetLayout`. If set to `VK_DESCRIPTOR_UPDATE_TEMPLATE_TYPE_PUSH_DESCRIPTORS_KHR` it can only be used to push descriptor sets using the provided `pipelineBindPoint`, `pipelineLayout`, and `set` number.

- `descriptorSetLayout` is the descriptor set layout the parameter update template will be used with. All descriptor sets which are going to be updated through the newly created descriptor update template must be created with this layout. `descriptorSetLayout` is the descriptor set layout used to build the descriptor update template. All descriptor sets which are going to be updated through the newly created descriptor update template must be created with a layout that matches (is the same as, or defined identically to) this layout. This parameter is ignored if `templateType` is not `VK_DESCRIPTOR_UPDATE_TEMPLATE_TYPE_DESCRIPTOR_SET`.

- `pipelineBindPoint` is a VkPipelineBindPoint indicating whether the descriptors will be used by graphics pipelines or compute pipelines. This parameter is ignored if `templateType` is not `VK_DESCRIPTOR_UPDATE_TEMPLATE_TYPE_PUSH_DESCRIPTORS_KHR`

- `pipelineLayout` is a VkPipelineLayout object used to program the bindings. This parameter is ignored if `templateType` is not `VK_DESCRIPTOR_UPDATE_TEMPLATE_TYPE_PUSH_DESCRIPTORS_KHR`

- `set` is the set number of the descriptor set in the pipeline layout that will be updated. This parameter is ignored if `templateType` is not `VK_DESCRIPTOR_UPDATE_TEMPLATE_TYPE_PUSH_DESCRIPTORS_KHR`

## Description

Valid Usage

- If `templateType` is `VK_DESCRIPTOR_UPDATE_TEMPLATE_TYPE_DESCRIPTOR_SET`, `descriptorSetLayout` must be a valid `VkDescriptorSetLayout` handle

- If `templateType` is `VK_DESCRIPTOR_UPDATE_TEMPLATE_TYPE_PUSH_DESCRIPTORS_KHR`, `pipelineBindPoint` must be a valid VkPipelineBindPoint value

- If `templateType` is `VK_DESCRIPTOR_UPDATE_TEMPLATE_TYPE_PUSH_DESCRIPTORS_KHR`, `pipelineLayout` must be a valid `VkPipelineLayout` handle

- If `templateType` is `VK_DESCRIPTOR_UPDATE_TEMPLATE_TYPE_PUSH_DESCRIPTORS_KHR`, `set` must be the unique set number in the pipeline layout that uses a descriptor set layout that was created with `VK_DESCRIPTOR_SET_LAYOUT_CREATE_PUSH_DESCRIPTOR_BIT_KHR`

Valid Usage (Implicit)

- `sType` must be `VK_STRUCTURE_TYPE_DESCRIPTOR_UPDATE_TEMPLATE_CREATE_INFO`

- `pNext` must be `NULL`

- `flags` must be `0`

- `pDescriptorUpdateEntries` must be a valid pointer to an array of `descriptorUpdateEntryCount` valid VkDescriptorUpdateTemplateEntry structures

- `templateType` must be a valid VkDescriptorUpdateTemplateType value

- `descriptorUpdateEntryCount` must be greater than `0`

- Both of `descriptorSetLayout`, and `pipelineLayout` that are valid handles of non-ignored parameters must have been created, allocated, or retrieved from the same VkDevice

## See Also

VkDescriptorSetLayout, VkDescriptorUpdateTemplateCreateFlags, VkDescriptorUpdateTemplateEntry, VkDescriptorUpdateTemplateType, VkPipelineBindPoint, VkPipelineLayout, VkStructureType, vkCreateDescriptorUpdateTemplate, vkCreateDescriptorUpdateTemplateKHR

## 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 (c) 2014-2020 Khronos Group. This work is licensed under a Creative Commons Attribution 4.0 International License.