Same question here, I've been using SAB between a web worker and main thread. Works great out side of iframe, but in an iframe, SAB is not available. I have
Cross-Origin-Opener-Policy: same-origin Cross-Origin-Embedder-Policy: require-corp set in the response header as well. On Friday, March 1, 2024 at 12:37:48 PM UTC-8 [email protected] wrote: > Hi, > > This isn't probably quite the right place to ask this, but here goes... > > I've got a multithreaded emscripten/webgpu app that therefore requires the > use of the JS sharedArrayBuffer class. > > To enable this, I have learned I have to add the follow headers to my > server responses: > > Cross-Origin-Opener-Policy: same-origin > Cross-Origin-Embedder-Policy: require-corp > > I have done this and it works great, eg: > > https://skirmish-dev.net/orkland/ > > This is running 2 background threads, one for the aerial image texture, > one for the height map texture. They each first unzip and then mipmap the > incoming data. It works fantastic and I'm still kind of amazed emscripten > can do this! > > BUT! If I try to place this inside an HTML iframe element, it doesn't work > - I get the same 'class sharedArrayBuffer not found' error I would get if I > left out the above headers. > > I have tried adding the same headers to the page that contains the iframe > but still nothing. I've tried a bunch of allow="" and sandbox="" settings > and nada. > > Is this even possible? I'm beginning to think it isn't. It's a question > that's often asked, but the answer always seems to be 'it should work if > you do blah blah!', never 'Yes, I've done that!'. > > There is also the Cross-Origin-Resource-Policy header, but my > understanding of that is it's intended for resources from a different > origin? All my resources are from the same origin, and it doesn't seem to > make a difference. > > The page I've been able to make the most sense of regarding all this is > here: > https://blog.stackblitz.com/posts/cross-browser-with-coop-coep/ > > Any corrections or more info would be most appreciated! > > Bye. > Mark > > -- You received this message because you are subscribed to the Google Groups "emscripten-discuss" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/emscripten-discuss/fdd48509-6da4-4e45-8f3f-8291773b2c47n%40googlegroups.com.
