Bug 272822 – [WPE][WebXR] Assertion fails `gl.checkFramebufferStatus(GL::FRAMEBUFFER) == GL::FRAMEBUFFER_COMPLETE` in `WebXROpaqueFramebuffer::blitShared()`

• Component: WebXR
• Status: RESOLVED FIXED

[Vitaly Dyackhov]

Stack trace:
```
STDERR: ASSERTION FAILED: gl.checkFramebufferStatus(GL::FRAMEBUFFER) == GL::FRAMEBUFFER_COMPLETE
STDERR: /app/webkit/Source/WebCore/Modules/webxr/WebXROpaqueFramebuffer.cpp(285) : void WebCore::WebXROpaqueFramebuffer::blitShared(WebCore::GraphicsContextGL&)
STDERR: 1   0x7fd1be81e5a8 WTFCrash
STDERR: 2   0x7fd1bab555f0 WTF::isIntegralOrPointerType()
STDERR: 3   0x7fd1c0efb5df WebCore::WebXROpaqueFramebuffer::blitShared(WebCore::GraphicsContextGL&)
STDERR: 4   0x7fd1c0efb445 WebCore::WebXROpaqueFramebuffer::endFrame()
STDERR: 5   0x7fd1c0f1b9b8 WebCore::WebXRWebGLLayer::endFrame()
STDERR: 6   0x7fd1c0f00446 operator()
STDERR: 7   0x7fd1c0f181cc call
STDERR: 8   0x7fd1bb47d4db WTF::Function<void ()>::operator()() const
STDERR: 9   0x7fd1c0ef479e WebCore::ActiveDOMObject::queueTaskKeepingObjectAlive<WebCore::WebXRSession>(WebCore::WebXRSession&, WebCore::TaskSource, WTF::Function<void ()>&&)::{lambda()#1}::operator()() const
STDERR: 10  0x7fd1c0ef928a WTF::Detail::CallableWrapper<WebCore::ActiveDOMObject::queueTaskKeepingObjectAlive<WebCore::WebXRSession>(WebCore::WebXRSession&, WebCore::TaskSource, WTF::Function<void ()>&&)::{lambda()#1}, void>::call()
STDERR: 11  0x7fd1bb47d4db WTF::Function<void ()>::operator()() const
STDERR: 12  0x7fd1c1ab01d6 WebCore::EventLoopFunctionDispatchTask::execute()
STDERR: 13  0x7fd1c1aaf2c7 WebCore::EventLoop::run(std::optional<WTF::ApproximateTime>)
STDERR: 14  0x7fd1c1c3b7e3 WebCore::WindowEventLoop::didReachTimeToRun()
STDERR: 15  0x7fd1c1c52c88 void std::__invoke_impl<void, void (WebCore::WindowEventLoop::*&)(), WebCore::WindowEventLoop*&>(std::__invoke_memfun_deref, void (WebCore::WindowEventLoop::*&)(), WebCore::WindowEventLoop*&)
STDERR: 16  0x7fd1c1c52bf3 std::__invoke_result<void (WebCore::WindowEventLoop::*&)(), WebCore::WindowEventLoop*&>::type std::__invoke<void (WebCore::WindowEventLoop::*&)(), WebCore::WindowEventLoop*&>(void (WebCore::WindowEventLoop::*&)(), WebCore::WindowEventLoop*&)
STDERR: 17  0x7fd1c1c52b69 void std::_Bind<void (WebCore::WindowEventLoop::*(WebCore::WindowEventLoop*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>)
STDERR: 18  0x7fd1c1c52afb void std::_Bind<void (WebCore::WindowEventLoop::*(WebCore::WindowEventLoop*))()>::operator()<, void>()
STDERR: 19  0x7fd1c1c52956 WTF::Detail::CallableWrapper<std::_Bind<void (WebCore::WindowEventLoop::*(WebCore::WindowEventLoop*))()>, void>::call()
STDERR: 20  0x7fd1bb47d4db WTF::Function<void ()>::operator()() const
STDERR: 21  0x7fd1bb562928 WebCore::Timer::fired()
STDERR: 22  0x7fd1c2a17b28 WebCore::ThreadTimers::sharedTimerFiredInternal()
STDERR: 23  0x7fd1c2a17405 operator()
STDERR: 24  0x7fd1c2a2147a call
STDERR: 25  0x7fd1bb47d4db WTF::Function<void ()>::operator()() const
STDERR: 26  0x7fd1c29c3752 WebCore::MainThreadSharedTimer::fired()
STDERR: 27  0x7fd1c29cc39c void std::__invoke_impl<void, void (WebCore::MainThreadSharedTimer::*&)(), WebCore::MainThreadSharedTimer*&>(std::__invoke_memfun_deref, void (WebCore::MainThreadSharedTimer::*&)(), WebCore::MainThreadSharedTimer*&)
STDERR: 28  0x7fd1c29cc315 std::__invoke_result<void (WebCore::MainThreadSharedTimer::*&)(), WebCore::MainThreadSharedTimer*&>::type std::__invoke<void (WebCore::MainThreadSharedTimer::*&)(), WebCore::MainThreadSharedTimer*&>(void (WebCore::MainThreadSharedTimer::*&)(), WebCore::MainThreadSharedTimer*&)
STDERR: 29  0x7fd1c29cc28b void std::_Bind<void (WebCore::MainThreadSharedTimer::*(WebCore::MainThreadSharedTimer*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>)
STDERR: 30  0x7fd1c29cc21d void std::_Bind<void (WebCore::MainThreadSharedTimer::*(WebCore::MainThreadSharedTimer*))()>::operator()<, void>()
STDERR: 31  0x7fd1c29cc1e6 WTF::Detail::CallableWrapper<std::_Bind<void (WebCore::MainThreadSharedTimer::*(WebCore::MainThreadSharedTimer*))()>, void>::call()
```

[Vitaly Dyackhov]

Pull request: https://github.com/WebKit/WebKit/pull/27387

[EWS]

Committed 277659@main (9af3eb62b5fc): <https://commits.webkit.org/277659@main>

Reviewed commits have been landed. Closing PR #27387 and removing active labels.

[Radar WebKit Bug Importer]

<rdar://problem/126680815>