1// Copyright (c) 2018-2022 NVIDIA Corporation.
2//
3// SPDX-License-Identifier: CC-BY-4.0
4
5include::{generated}/meta/{refprefix}VK_NV_present_barrier.adoc[]
6
7=== Other Extension Metadata
8
9*Last Modified Date*::
10    2022-05-16
11*Contributors*::
12  - Liya Li, Nvidia
13  - Martin Schwarzer, Nvidia
14  - Andy Wolf, Nvidia
15  - Ian Williams, Nvidia
16  - Ben Morris, Nvidia
17  - James Jones, Nvidia
18  - Jeff Juliano, Nvidia
19
20=== Description
21
22This extension adds support for synchronizing corresponding presentation
23requests across multiple swapchains using the _present barrier_.
24
25include::{generated}/interfaces/VK_NV_present_barrier.adoc[]
26
27=== Issues
281) Is there a query interface to check if a swapchain is using the present
29barrier?
30
31*RESOLVED*.
32There is no such query interface.
33When creating a swapchain, an application can specify to use the _present
34barrier_, and if the swapchain is created successfully, this swapchain will
35be using the present barrier.
36
372) Do we need an extra interface to set up the present barrier across
38distributed systems?
39
40*RESOLVED*.
41If the required hardware is presented in the system, and all settings for
42the physical synchronization with other systems are set up, an
43implementation manages the configuration automatically when creating a
44swapchain, without any extra calls from the application.
45
46=== Version History
47
48  * Revision 1, 2022-07-20
49  ** Initial version
50
51