<div dir="ltr"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">My application using QtWebEngine (Windows 10, python 3.13) does not run with Qt 6.9. Testing with various QSG_RHI_BACKEND values, only d3d12 doesn't crash but still results in a blank page. Setting QSG_RHI_PREFER_SOFTWARE_RENDERER=1 works but results in slow page scrolling. I don't think this is an issue of PyQt itself but most likely a Qt issue.</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><br></div><div style="font-family:arial,helvetica,sans-serif;font-size:small" class="gmail_default">Test code:</div><div style="font-family:arial,helvetica,sans-serif;font-size:small" class="gmail_default"><span style="font-family:monospace">import sys<br><br>from PyQt6.QtWebEngineWidgets import QWebEngineView<br>from PyQt6.QtWidgets import QApplication, QMainWindow<br><br><br>class MainWindow(QMainWindow):<br>    def __init__(self):<br>        super().__init__()<br><br>        view = QWebEngineView(self)<br>        self.setCentralWidget(view)<br><br><br>app = QApplication(sys.argv)<br>win = MainWindow()<br>win.show()<br>app.exec()</span></div><div style="font-family:arial,helvetica,sans-serif;font-size:small" class="gmail_default"><br></div><div style="font-family:arial,helvetica,sans-serif;font-size:small" class="gmail_default">Console output:</div><div style="font-family:arial,helvetica,sans-serif;font-size:small" class="gmail_default"><span style="font-family:monospace">[73696:94896:0404/162037.627:ERROR:shared_image_factory.cc(880)] Could not find SharedImageBackingFactory with params: usage: Gles<br>2Read|DisplayRead|DisplayWrite|Scanout, format: RGBA_8888, share_between_threads: 0, gmb_type: empty, debug_label: QWE_SharedImage<br>Buffer<br>[73696:94896:0404/162037.627:ERROR:native_skia_output_device.cpp(253)] CreateSharedImage failed.<br>[73696:94896:0404/162037.628:ERROR:raster_decoder.cc(1146)]   RasterDecoderImpl: Context lost during MakeCurrent.<br>[73696:94896:0404/162037.629:ERROR:raster_decoder.cc(1146)]   RasterDecoderImpl: Context lost during MakeCurrent.<br>[73696:94896:0404/162037.629:ERROR:raster_decoder.cc(1146)]   RasterDecoderImpl: Context lost during MakeCurrent.<br>[73696:94896:0404/162037.630:ERROR:raster_decoder.cc(1146)]   RasterDecoderImpl: Context lost during MakeCurrent.<br>[73696:94896:0404/162037.642:ERROR:shared_context_state.cc(885)] Failed to make current since context is marked as lost<br>[73696:94896:0404/162037.643:ERROR:skia_output_surface_impl_on_gpu.cc(2264)] Failed to make current.<br>[73696:94896:0404/162037.647:ERROR:shared_image_factory.cc(880)] Could not find SharedImageBackingFactory with params: usage: Gles<br>2Read|DisplayRead|DisplayWrite|Scanout, format: RGBA_8888, share_between_threads: 0, gmb_type: empty, debug_label: QWE_SharedImage<br>Buffer<br>[73696:94896:0404/162037.649:ERROR:native_skia_output_device.cpp(253)] CreateSharedImage failed.<br>[73696:94896:0404/162037.651:ERROR:raster_decoder.cc(1146)]   RasterDecoderImpl: Context lost during MakeCurrent.<br>[73696:94896:0404/162037.652:ERROR:raster_decoder.cc(1146)]   RasterDecoderImpl: Context lost during MakeCurrent.<br>[73696:94896:0404/162037.652:ERROR:raster_decoder.cc(1146)]   RasterDecoderImpl: Context lost during MakeCurrent.<br>[73696:94896:0404/162037.659:ERROR:shared_context_state.cc(885)] Failed to make current since context is marked as lost<br>[73696:94896:0404/162037.659:ERROR:skia_output_surface_impl_on_gpu.cc(2264)] Failed to make current.</span></div><br><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><br></div></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Fri, Apr 4, 2025 at 2:11 AM Phil Thompson <<a href="mailto:phil@riverbankcomputing.com">phil@riverbankcomputing.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">The PyQt6 v6.9.0 and Qt v6.9.0 wheels (and all the related packages) are <br>
now available from the local pypi server. If there are no problems I'll <br>
move them to <a href="http://pypi.org" rel="noreferrer" target="_blank">pypi.org</a> around the middle of next week.<br>
<br>
Phil<br>
</blockquote></div>