Details
-
Bug
-
Resolution: Out of scope
-
P3: Somewhat important
-
None
-
5.15.2
-
None
Description
With fc3893ea80296bd17e1797d5caf4479e0be4afd1 the "old composer" was removed from QtWebEngine, so this no longer has any effect:
qputenv("QTWEBENGINE_CHROMIUM_FLAGS", "--disable-viz-display-compositor");
This causes a serious degression of FPS on Windows systems with QSGRendererInterface::Software.
To demonstrate this, please use qnanobrowser with QT_QUICK_BACKEND="software", visit any JITSI meet website (e.g. https://meet.jit.si) and start a video chat session there.
Interestingly on on macOS Software rendering works just fine.