[Webkit-unassigned] [Bug 239896] Safari Tab freezes when creating too many webgl render calls without flushing

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=239896

--- Comment #2 from Sebastian Dunkel <sebastian.dunkel at autodesk.com> ---
On an M1 MacBook Pro (16-inch, 2021) with Safari 15.4 (17613.1.17.1.13) I can reach 33.500.000 draw calls in the test app and then the tab crashes and reloads. I can't reproduce the freezing behaviour on the Mac though, so I can't say for sure whether it is exactly the same problem. Turning off "WebGL via Metal" or flushing the GL context prevents the crashes on the Mac as well.

The console shows similar error messages:
 // IOReturn IOGPUDevice::new_resource(IOGPUNewResourceArgs *, struct IOGPUNewResourceReturnData *, IOByteCount, uint32_t *): PID 62576 likely leaking IOGPUResource (count=135000)
 // virtual bool IOGPUResource::map(uint64_t): failed to create mapping. resType=0x0
 // IOReturn IOGPUDevice::new_resource(IOGPUNewResourceArgs *, struct IOGPUNewResourceReturnData *, IOByteCount, uint32_t *): failed to create mapping.
 // static IOReturn IOGPUDeviceUserClient::s_new_resource(IOGPUDeviceUserClient *, void *, IOExternalMethodArguments *) failed to create resource

Same behaviour with Safari Tech Preview (15.4, WebKit 17614.1.7.7)

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