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// Copyright 2020-2023 The Khronos Group Inc.
//
// SPDX-License-Identifier: CC-BY-4.0
include::{generated}/meta/{refprefix}VK_KHR_shader_subgroup_uniform_control_flow.adoc[]
=== Other Extension Metadata
*Last Modified Date*::
2020-08-27
*IP Status*::
No known IP claims.
*Interactions and External Dependencies*::
- Requires SPIR-V 1.3.
- This extension provides API support for
{GLSLregistry}/ext/GL_EXT_subgroupuniform_qualifier.txt[`GL_EXT_subgroupuniform_qualifier`]
*Contributors*::
- Alan Baker, Google
- Jeff Bolz, NVIDIA
=== Description
This extension allows the use of the `SPV_KHR_subgroup_uniform_control_flow`
SPIR-V extension in shader modules.
`SPV_KHR_subgroup_uniform_control_flow` provides stronger guarantees that
diverged subgroups will reconverge.
Developers should utilize this extension if they use subgroup operations to
reduce the work performed by a uniform subgroup.
This extension will guarantee that uniform subgroup will reconverge in the
same manner as invocation groups (see "`Uniform Control Flow`" in the
<<spirv-spec,Khronos SPIR-V Specification>>).
include::{generated}/interfaces/VK_KHR_shader_subgroup_uniform_control_flow.adoc[]
=== Version History
* Revision 1, 2020-08-27 (Alan Baker)
** Internal draft version
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