https://bugs.kde.org/show_bug.cgi?id=469485
Bug ID: 469485
Summary: [Win11 + Angle] Moving Krita window crossing the
screen border causes severe hiccups
Classification: Applications
Product: krita
Version: git master (please specify the git hash!)
Platform: Microsoft Windows
OS: Microsoft Windows
Status: REPORTED
Severity: minor
Priority: NOR
Component: OpenGL Canvas
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
STEPS TO REPRODUCE
1. Start dragging Krita's windows across the screen
2. Make sure that the windows crosses the screen's border
3. See the hiccups
The problem happens only with Angle backend, everything works fine with OpenGL
backend.
See the demo video: https://disk.yandex.ru/i/PpbccO51hM4vag
First I move the windows with openGL backend (everything works fine), then I
switch to Angle and the hiccups start appearing.
VTune points into this backtrace, but I'm not sure how relevant it is:
CPU Time
2 of 11: 23.0% (0.206s of 0.897s)
d3d11.dll ! func@0x180100c4a
libGLESv2.dll ! rx::StateManager11::setRenderTarget + 0x5b -
StateManager11.cpp:1738
libGLESv2.dll ! rx::SwapChain11::copyOffscreenToBackbuffer + 0x283 -
SwapChain11.cpp:971
libGLESv2.dll ! rx::SwapChain11::swapRect + 0x41 - SwapChain11.cpp:879
libGLESv2.dll ! rx::SurfaceD3D::swapRect + 0x84 - SurfaceD3D.cpp:322
libGLESv2.dll ! rx::SurfaceD3D::swap + 0x39 - SurfaceD3D.cpp:384
libGLESv2.dll ! egl::Surface::swap + 0xbc - Surface.cpp:324
libGLESv2.dll ! egl::SwapBuffers + 0x97 - egl_stubs.cpp:640
libGLESv2.dll ! EGL_SwapBuffers + 0x87 - entry_points_egl_autogen.cpp:438
qwindows.dll ! QWindowsEGLContext::swapBuffers + 0x44 -
qwindowseglcontext.cpp:597
Qt5Gui.dll ! QOpenGLContext::swapBuffers + 0xf3 - qopenglcontext.cpp:1121
Qt5Gui.dll ! QPlatformBackingStore::composeAndFlush + 0x1232 -
qplatformbackingstore.cpp:494
qwindows.dll ! QWindowsBackingStore::composeAndFlush + 0x1a3 -
qwindowsbackingstore.cpp:236
Qt5Widgets.dll ! QWidgetRepaintManager::flush + 0x424 -
qwidgetrepaintmanager.cpp:1189
Qt5Widgets.dll ! QWidgetRepaintManager::sync + 0x2f6 -
qwidgetrepaintmanager.cpp:738
Qt5Widgets.dll ! QWidgetWindow::handleExposeEvent + 0x144 -
qwidgetwindow.cpp:1031
Qt5Widgets.dll ! QWidgetWindow::event + 0x385 - qwidgetwindow.cpp:347
Qt5Widgets.dll ! QApplicationPrivate::notify_helper + 0x102 -
qapplication.cpp:3637
Qt5Widgets.dll ! QApplication::notify + 0x1e2 - qapplication.cpp
libkritaui.dll ! KisApplication::notify + 0xa7 - KisApplication.cpp
Qt5Core.dll ! QCoreApplication::notifyInternal2 + 0x91 -
qcoreapplication.cpp:1064
Qt5Gui.dll ! QGuiApplicationPrivate::processExposeEvent + 0x136 -
qguiapplication.cpp:3262
Qt5Gui.dll ! QWindowSystemInterface::sendWindowSystemEvents + 0xd9 -
qwindowsysteminterface.cpp:1179
Qt5Core.dll ! qt_internal_proc + 0x257 - qeventdispatcher_win.cpp
USER32.dll ! func@0x1800161a0 + 0x134
qwindows.dll ! qWindowsWndProc + 0x5dd - qwindowscontext.cpp:1714
USER32.dll ! func@0x1800161a0 + 0x134
qwindows.dll ! qWindowsWndProc + 0x5dd - qwindowscontext.cpp:1714
USER32.dll ! DispatchMessageW + 0x200
Qt5Core.dll ! QEventDispatcherWin32::processEvents + 0x667 -
qeventdispatcher_win.cpp:595
qwindows.dll ! QWindowsGuiEventDispatcher::processEvents + 0x14 -
qwindowsguieventdispatcher.cpp:73
Qt5Core.dll ! QEventLoop::processEvents + 0x1e - qeventloop.cpp:139
Qt5Core.dll ! QEventLoop::exec + 0x1c0 - qeventloop.cpp:231
Qt5Core.dll ! QCoreApplication::exec + 0x6c - qcoreapplication.cpp:1375
krita.dll ! krita_main + 0x4138 - main.cc:717
krita.exe ! _tmainCRTStartup + 0x275 - crtexe.c:329
krita.exe ! WinMainCRTStartup + 0x15 - crtexe.c:176
KERNEL32.DLL ! BaseThreadInitThunk + 0x1c
ntdll.dll ! RtlUserThreadStart + 0x27
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