| // Copyright 2020-2021 The Khronos Group Inc. |
| // |
| // SPDX-License-Identifier: CC-BY-4.0 |
| |
| include::{generated}/meta/{refprefix}VK_KHR_shader_subgroup_uniform_control_flow.txt[] |
| |
| === 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 requires |
| {spirv}/KHR/SPV_KHR_subgroup_uniform_control_flow.html[`SPV_KHR_subgroup_uniform_control_flow`] |
| *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.txt[] |
| |
| === Version History |
| |
| * Revision 1, 2020-08-27 (Alan Baker) |
| - Internal draft version |
