// Copyright (c) 2017-2019 Khronos Group. This work is licensed under a
// Creative Commons Attribution 4.0 International License; see
// http://creativecommons.org/licenses/by/4.0/

include::meta/VK_KHR_8bit_storage.txt[]

*Last Modified Date*::
    2018-02-05
*IP Status*::
    No known IP claims.
*Interactions and External Dependencies*::
  - This extension requires
    https://www.khronos.org/registry/spir-v/extensions/KHR/SPV_KHR_8bit_storage.html[`SPV_KHR_8bit_storage`]
*Contributors*::
  - Alexander Galazin, Arm

The `VK_KHR_8bit_storage` extension allows use of 8-bit types in uniform and
storage buffers, and push constant blocks.
This extension introduces several new optional features which map to SPIR-V
capabilities and allow access to 8-bit data in code:Block-decorated objects
in the code:Uniform and the code:StorageBuffer storage classes, and objects
in the code:PushConstant storage class.

The code:StorageBuffer8BitAccess capability must: be supported by all
implementations of this extension.
The other capabilities are optional.

=== New Enum Constants

  * Extending elink:VkStructureType:
  ** ename:VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_8BIT_STORAGE_FEATURES_KHR

=== New Structures

  * slink:VkPhysicalDevice8BitStorageFeaturesKHR

=== New SPIR-V Capabilities

  * <<spirvenv-capabilities-table-8bitstorage,code:StorageBuffer8BitAccess>>
  * <<spirvenv-capabilities-table-8bitstorage,code:UniformAndStorageBuffer8BitAccess>>
  * <<spirvenv-capabilities-table-8bitstorage,code:StoragePushConstant8>>

=== Issues

=== Version History

  * Revision 1, 2018-02-05 (Alexander Galazin)
    - Initial draft