# VkRenderingFragmentDensityMapAttachmentInfoEXT(3) Manual Page

## Name

VkRenderingFragmentDensityMapAttachmentInfoEXT - Structure specifying fragment shading rate attachment information

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## C Specification

The `VkRenderingFragmentDensityMapAttachmentInfoEXT` structure is defined as:

    // Provided by VK_EXT_fragment_density_map with VK_VERSION_1_3 or VK_KHR_dynamic_rendering
    typedef struct VkRenderingFragmentDensityMapAttachmentInfoEXT {
        VkStructureType    sType;
        const void*        pNext;
        VkImageView        imageView;
        VkImageLayout      imageLayout;
    } VkRenderingFragmentDensityMapAttachmentInfoEXT;

## Members

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

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

- `imageView` is the image view that will be used as a fragment density map attachment.

- `imageLayout` is the layout that `imageView` will be in during rendering.

## Description

This structure can be included in the `pNext` chain of VkRenderingInfo to define a fragment density map. If this structure is not included in the `pNext` chain, `imageView` is treated as VK_NULL_HANDLE.

Valid Usage

- VUID-VkRenderingFragmentDensityMapAttachmentInfoEXT-imageView-06157
  If `imageView` is not VK_NULL_HANDLE, `imageLayout` must be `VK_IMAGE_LAYOUT_GENERAL` or `VK_IMAGE_LAYOUT_FRAGMENT_DENSITY_MAP_OPTIMAL_EXT`

- VUID-VkRenderingFragmentDensityMapAttachmentInfoEXT-imageView-06158
  If `imageView` is not VK_NULL_HANDLE, it must have been created with `VK_IMAGE_USAGE_FRAGMENT_DENSITY_MAP_BIT_EXT`

- VUID-VkRenderingFragmentDensityMapAttachmentInfoEXT-imageView-06159
  If `imageView` is not VK_NULL_HANDLE, it must not have been created with `VK_IMAGE_CREATE_SUBSAMPLED_BIT_EXT`

- VUID-VkRenderingFragmentDensityMapAttachmentInfoEXT-apiVersion-07908
  If the `multiview` feature is not enabled, VkPhysicalDeviceProperties::`apiVersion` is less than Vulkan 1.1, and `imageView` is not VK_NULL_HANDLE, it must have a `layerCount` equal to `1`

Valid Usage (Implicit)

- VUID-VkRenderingFragmentDensityMapAttachmentInfoEXT-sType-sType
  `sType` must be `VK_STRUCTURE_TYPE_RENDERING_FRAGMENT_DENSITY_MAP_ATTACHMENT_INFO_EXT`

- VUID-VkRenderingFragmentDensityMapAttachmentInfoEXT-imageView-parameter
  `imageView` must be a valid VkImageView handle

- VUID-VkRenderingFragmentDensityMapAttachmentInfoEXT-imageLayout-parameter
  `imageLayout` must be a valid VkImageLayout value

## See Also

VK_EXT_fragment_density_map, VK_KHR_dynamic_rendering, VK_VERSION_1_3, VkImageLayout, VkImageView, 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 2014-2024 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0