path: root/src/angle/patches/0016-ANGLE-Fix-severe-performance-regression.patch
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* Remove ANGLELaszlo Agocs2020-05-261-37/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This marks the end of EGL and OpenGL ES support on Windows. The concepts of -opengl dynamic, -opengl desktop, QT_OPENGL=software, etc. remain unchanged, with the exception of the disapperance of everything ANGLE related. CMake builds now work identically to qmake on Windows: they default to 'dynamic' OpenGL on Windows, unless -DINPUT_opengl=desktop is specified. On Windows, Qt 6 is expected to default to the "dynamic" OpenGL model by default, just like Qt 5.15. This can be changed by switching to "desktop" OpenGL, which will link to opengl32 (publicly, so other libs and applications will do so as well) and disallows using another OpenGL DLL. The "dynamic" mode is essential still because the fallback to a software rasterizer, such as the opengl32sw.dll we ship with the Qt packages, has to to work exactly like in Qt 5, the removal of ANGLE does not change this concept in any way (except of course that the middle option of using ANGLE is now gone) When it comes to the windows plugin's OpenGL blacklist feature, it works like before and accepts the ANGLE/D3D related keywords. They will then be ignored. Similarly, requesting QT_OPENGL=angle is ignored (but will show a warning). The D3D11 and DXGI configure time tests are removed: Qt 5.14 already depends on D3D 11.1 and DXGI 1.3 headers being available unconditionally on Win32 (in QRhi's D3D11 backend). No need to test for these. [ChangeLog][Windows] ANGLE is no longer included with Qt. Dynamic OpenGL builds work like before but ANGLE is no longer an option. OpenGL proper or an alternative opengl32 implementation are the two remaining options now. Attempting to set QT_OPENGL=angle or Qt::AA_UseOpenGLES will have no effect on Windows. Fixes: QTBUG-79103 Change-Id: Ia404e0d07f3fe191b27434d863c81180112ecb3b Reviewed-by: Oliver Wolff <>
* ANGLE: Fix severe performance regressionOliver Wolff2020-03-121-0/+37
The changed buffer usage priority that was introduced in our ANGLE update caused severe performance regressions for Qt applications. Fixes: QTBUG-73835 Change-Id: I49839bb272cdeec0027264f2751b88bc149665ad Reviewed-by: André de la Rocha <> Reviewed-by: Miguel Costa <>