How to enable WebGL in QWebEngineView

main.py

import sys
import os

from PyQt6.QtCore import QUrl
from PyQt6.QtWebEngineCore import QWebEngineSettings
from PyQt6.QtWebEngineWidgets import QWebEngineView
from PyQt6.QtWidgets import QApplication, QVBoxLayout, QWidget


class Widget(QWidget):

    def __init__(self):
        super().__init__()
        self.setWindowTitle("QWebEngineView, PyQt6, Python")
        self.resize(650, 400)

        layout = QVBoxLayout()
        view = QWebEngineView()
        layout.addWidget(view)
        self.setLayout(layout)

        # view.load(QUrl("file:///web-project/index.html"))
        view.settings().setAttribute(QWebEngineSettings.WebAttribute.WebGLEnabled, True)
        print("----------------------")
        print(view.settings().testAttribute(QWebEngineSettings.WebAttribute.WebGLEnabled))
        view.setUrl(QUrl("https://get.webgl.org/"))

if __name__ == "__main__":
    os.environ['QTWEBENGINE_CHROMIUM_FLAGS'] = '--use-gl=angle --gpu --gpu-launcher --in-process-gpu --ignore-gpu-blacklist --ignore-gpu-blocklist'
    app = QApplication(sys.argv)
    w = Widget()
    w.show()
    sys.exit(app.exec())

Topic on StackOverflow

Result for PyQt 6.7.0. It doesn't work:

Console log:

D3D11 smoke test: Failed to create vertex shader
----------------------
True
D3D11 smoke test: Failed to create vertex shader
js: Unrecognized Content-Security-Policy directive 'image-src'.

But when I have deleted everything that is related to PyQt 6.7.0 and PyQt6-WebEngine and I have installed PyQt 6.7.1 it works!