Details
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Bug
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Resolution: Won't Do
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P2: Important
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None
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5.15.0 Beta3
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None
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Built using Emscripten 1.39.10 running on Docker (using https://github.com/forderud/QtWasm/blob/master/image/Dockerfile ).
Tested in Firefox 75 (64bit) and Chrome 80 (64bit) on Windows 10.
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WebAssembly
Description
I'm experiencing problems with created QOffscreenSurface objects being invalid when building my Qt application for WASM.
How to reproduce
The problem can be reproduced by adding assert(m_offscreenSurface->isValid()) checks to the quick/rendercontrol sample project as shown in https://codereview.qt-project.org/c/qt/qtdeclarative/+/296531. The following assertion then fail when running in debug mode:
Application exit (RuntimeError: abort(Assertion failed: m_offscreenSurface->isValid(), at: ../source/window_singlethreaded.cpp,117,WindowSingleThreaded).