# VkPhysicalDeviceFragmentDensityMapFeaturesEXT(3) Manual Page

## Name

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

## C Specification

The `VkPhysicalDeviceFragmentDensityMapFeaturesEXT` structure is defined as:

    typedef struct VkPhysicalDeviceFragmentDensityMapFeaturesEXT {
        VkStructureType    sType;
        void*              pNext;
        VkBool32           fragmentDensityMap;
        VkBool32           fragmentDensityMapDynamic;
        VkBool32           fragmentDensityMapNonSubsampledImages;
    } VkPhysicalDeviceFragmentDensityMapFeaturesEXT;

## Members

The members of the `VkPhysicalDeviceFragmentDensityMapFeaturesEXT` structure describe the following features:

## Description

- `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.

If the `VkPhysicalDeviceFragmentDensityMapFeaturesEXT` structure is included in the `pNext` chain of VkPhysicalDeviceFeatures2, it is filled with values indicating whether each feature is supported. `VkPhysicalDeviceFragmentDensityMapFeaturesEXT` can also be included in `pNext` chain of VkDeviceCreateInfo to enable the features.

Valid Usage (Implicit)

- `sType` must be `VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FRAGMENT_DENSITY_MAP_FEATURES_EXT`

## See Also

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