VkPhysicalDevice16BitStorageFeatures(3)

# VkPhysicalDevice16BitStorageFeatures(3) Manual Page

## Name

VkPhysicalDevice16BitStorageFeatures - Structure describing features supported by VK_KHR_16bit_storage

## C Specification

The VkPhysicalDevice16BitStorageFeatures structure is defined as:

    // Provided by VK_VERSION_1_1
    typedef struct VkPhysicalDevice16BitStorageFeatures {
        VkStructureType    sType;
        void*              pNext;
        VkBool32           storageBuffer16BitAccess;
        VkBool32           uniformAndStorageBuffer16BitAccess;
        VkBool32           storagePushConstant16;
        VkBool32           storageInputOutput16;
    } VkPhysicalDevice16BitStorageFeatures;

    // Provided by VK_KHR_16bit_storage
    // Equivalent to VkPhysicalDevice16BitStorageFeatures
    typedef VkPhysicalDevice16BitStorageFeatures VkPhysicalDevice16BitStorageFeaturesKHR;

## 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.

## Description

- `storageBuffer16BitAccess` specifies whether objects in the `StorageBuffer`, `ShaderRecordBufferKHR`, or `PhysicalStorageBuffer` storage class with the `Block` decoration can have 16-bit integer and 16-bit floating-point members. If this feature is not enabled, 16-bit integer or 16-bit floating-point members must not be used in such objects unless the `storageBuffer8BitAccess` or `uniformAndStorageBuffer8BitAccess` features are enabled or they are accessed in 32-bit multiples if the `shaderUntypedPointers` feature is enabled. This also specifies whether shader modules can declare the `StorageBuffer16BitAccess` capability.

- `uniformAndStorageBuffer16BitAccess` specifies whether objects in the `Uniform` storage class with the `Block` decoration can have 16-bit integer and 16-bit floating-point members. If this feature is not enabled, 16-bit integer or 16-bit floating-point members must not be used in such objects unless the `uniformAndStorageBuffer8BitAccess` are enabled or they are accessed in 32-bit multiples if the `shaderUntypedPointers` feature is enabled. This also specifies whether shader modules can declare the `UniformAndStorageBuffer16BitAccess` capability.

- `storagePushConstant16` specifies whether objects in the `PushConstant` storage class can have 16-bit integer and 16-bit floating-point members. If this feature is not enabled, 16-bit integer or floating-point members must not be used in such objects unless the `storagePushConstant8` feature is enabled or they are accessed in 32-bit multiples if the `shaderUntypedPointers` feature is enabled. This also specifies whether shader modules can declare the `StoragePushConstant16` capability.

- `storageInputOutput16` specifies whether objects in the `Input` and `Output` storage classes can have 16-bit integer and 16-bit floating-point members. If this feature is not enabled, 16-bit integer or 16-bit floating-point members must not be used in such objects. This also specifies whether shader modules can declare the `StorageInputOutput16` capability.

If the `VkPhysicalDevice16BitStorageFeatures` 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. If the application wishes to use a VkDevice with any features described by `VkPhysicalDevice16BitStorageFeatures`, it must add an instance of the structure, with the desired feature members set to VK_TRUE, to the `pNext` chain of VkDeviceCreateInfo when creating the VkDevice.

Valid Usage (Implicit)

- VUID-VkPhysicalDevice16BitStorageFeatures-sType-sType
  `sType` must be VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_16BIT_STORAGE_FEATURES

Structure Chaining

Extends the structures

  - VkDeviceCreateInfo

  - VkPhysicalDeviceFeatures2

## See Also

VK_KHR_16bit_storage, VK_VERSION_1_1, 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 2014-2026 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0