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Investigate implementation of OffscreenCanvas API #2481

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mvaligursky opened this issue Oct 20, 2020 · 10 comments · May be fixed by #5168
Open

Investigate implementation of OffscreenCanvas API #2481

mvaligursky opened this issue Oct 20, 2020 · 10 comments · May be fixed by #5168
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@mvaligursky
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area: graphics Graphics related issue performance Relating to load times or frame rate

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@mvaligursky
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Investigate implementation of https://developer.mozilla.org/en-US/docs/Web/API/OffscreenCanvas. This would give us:

  • possible additional performance for the application, as playcanvas part of the application including webgl would execute on separate thread
  • ability to use Atomics library https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Atomics on both webgl and worker threads, allowing us to write a job system which can execute jobs triggered on webgl thread and get results back inside the same frame, without using messages for synchronization.
@mvaligursky mvaligursky added performance Relating to load times or frame rate area: graphics Graphics related issue labels Oct 20, 2020
@mvaligursky mvaligursky self-assigned this Oct 20, 2020
@issacclee
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Hi guys,
Is there any update regarding to implement this feature?

@slimbuck
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slimbuck commented Jun 3, 2022

Hi @issacclee, we've not spent time investigating this yet. Probably not high priority until there is support in Safari?

@slimbuck
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slimbuck commented Jun 3, 2022

@mvaligursky wondering whether webgpu supports this out of the box?

@mvaligursky
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it does not in the initial release, but the support is expected later.

@issacclee
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Thanks for answering guys, am I right to assume that this probably won't get implemented unless Safari starts to support the spec?

@mvaligursky
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It will be implemented, when somebody has some time and considers this a high priority, regardless of the Safari (and Firefox by the way) support. Benefits on the android platform which is mostly using Chrome browser could be very nice.
Perhaps somebody from our community of contributors could implement this as well, as this is an open source engine.

@issacclee
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https://webkit.org/blog/13686/release-notes-for-safari-technology-preview-161/
FYI, safari will be getting offscreencanvas as shown here in the new tech review release announcement.

@michaelfranzl michaelfranzl mentioned this issue Mar 19, 2023
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michaelfranzl added a commit to michaelfranzl/playcanvas that referenced this issue Mar 19, 2023
@michaelfranzl
Support for OffscreenCanvas in Web Workers playcanvas#2481
0756ba8
@michaelfranzl michaelfranzl linked a pull request Mar 19, 2023 that will close this issue
Open
michaelfranzl added a commit to michaelfranzl/playcanvas that referenced this issue Mar 19, 2023
@michaelfranzl
fixup! Support for OffscreenCanvas in Web Workers playcanvas#2481
bb76873
michaelfranzl added a commit to michaelfranzl/playcanvas that referenced this issue Mar 21, 2023
@michaelfranzl
fixup! Support for OffscreenCanvas in Web Workers playcanvas#2481
5c5db03
michaelfranzl added a commit to michaelfranzl/playcanvas that referenced this issue Mar 21, 2023
@michaelfranzl
fixup! Support for OffscreenCanvas in Web Workers playcanvas#2481
7a7bbff
michaelfranzl added a commit to michaelfranzl/playcanvas that referenced this issue Mar 25, 2023
@michaelfranzl
fixup! Support for OffscreenCanvas in Web Workers playcanvas#2481
c185bf4
@mvaligursky
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Based on this: https://www.construct.net/en/blogs/ashleys-blog-2/safari-releases-development-1616

Safari 16.4 rolled out in March 2023. Safari 16.4 adds support for OffscreenCanvas, but only the "2d" context - WebGL remains unsupported.

@Maksims
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Maksims commented Jun 6, 2023

This fall webgl context will be added for offscreencanvas to Safari.
https://webkit.org/blog/14205/news-from-wwdc23-webkit-features-in-safari-17-beta/

@mvaligursky
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related: #5168

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area: graphics Graphics related issue performance Relating to load times or frame rate
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Support for OffscreenCanvas in Web Workers michaelfranzl/playcanvas
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@Maksims @issacclee @slimbuck @mvaligursky