# VkPhysicalDeviceFragmentDensityMapFeaturesEXT(3) Manual Page

## Name

VkPhysicalDeviceFragmentDensityMapFeaturesEXT - Structure describing fragment density map features that can be supported by an implementation

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## C Specification

The `VkPhysicalDeviceFragmentDensityMapFeaturesEXT` structure is defined as:

    // Provided by VK_EXT_fragment_density_map
    typedef struct VkPhysicalDeviceFragmentDensityMapFeaturesEXT {
        VkStructureType    sType;
        void*              pNext;
        VkBool32           fragmentDensityMap;
        VkBool32           fragmentDensityMapDynamic;
        VkBool32           fragmentDensityMapNonSubsampledImages;
    } VkPhysicalDeviceFragmentDensityMapFeaturesEXT;

## Members

This structure describes the following features:

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

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

- `fragmentDensityMap` specifies whether the implementation supports render passes with a fragment density map attachment. If this feature is not enabled and the `pNext` chain of VkRenderPassCreateInfo includes a VkRenderPassFragmentDensityMapCreateInfoEXT structure, `fragmentDensityMapAttachment` must be `VK_ATTACHMENT_UNUSED`.

- `fragmentDensityMapDynamic` specifies whether the implementation supports dynamic fragment density map image views. If this feature is not enabled, `VK_IMAGE_VIEW_CREATE_FRAGMENT_DENSITY_MAP_DYNAMIC_BIT_EXT` must not be included in VkImageViewCreateInfo::`flags`.

- `fragmentDensityMapNonSubsampledImages` specifies whether the implementation supports regular non-subsampled image attachments with fragment density map render passes. If this feature is not enabled, render passes with a fragment density map attachment must only have subsampled attachments bound.

## Description

If the `VkPhysicalDeviceFragmentDensityMapFeaturesEXT` structure is included in the `pNext` chain of the VkPhysicalDeviceFeatures2 structure passed to vkGetPhysicalDeviceFeatures2, it is filled in to indicate whether each corresponding feature is supported. `VkPhysicalDeviceFragmentDensityMapFeaturesEXT` can also be used in the `pNext` chain of VkDeviceCreateInfo to selectively enable these features.

Valid Usage (Implicit)

- VUID-VkPhysicalDeviceFragmentDensityMapFeaturesEXT-sType-sType
  `sType` must be `VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FRAGMENT_DENSITY_MAP_FEATURES_EXT`

## See Also

VK_EXT_fragment_density_map, VkBool32, 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