I am not able to get the hellogl2 example working with Qt for WebAssembly. This is the example that is found in the
Qt/Examples/Qt-6.11.1/opengl/hellogl2
directory, and also in https://doc.qt.io/qt-6/qtopengl-hellogl2-example.html .

It works when I compile it as a regular program, however, when I compile it for WebAssembly, the contents of QOpenGLWidget are not rendered. This example is similar to a program that I am working on and having the same problems.

The following are the steps to reproduce it:

cd ~/Qt/Examples/Qt-6.11.1/opengl/hellogl2
~/Qt/6.11.1/wasm_singlethread/bin/qmake6 hellogl2.pro
make
python3 -m http.server 8000

Then in the browser:
http://localhost:8000/hellogl2.html

Roman