Error compiling plugins/roundedwindow/roundedwindow.h

[fuyukiSmkw]

The error below occurred when compiling (with dpkg-buildpackage):

In file included from kwin-plugins/obj-x86_64-linux-gnu/plugins/roundedwindow/roundedwindow_autogen/EWIEGA46WW/moc_roundedwindow.cpp:10,
                 from kwin-plugins/obj-x86_64-linux-gnu/plugins/roundedwindow/roundedwindow_autogen/mocs_compilation.cpp:2:
kwin-plugins/obj-x86_64-linux-gnu/plugins/roundedwindow/roundedwindow_autogen/EWIEGA46WW/../../../../../plugins/roundedwindow/roundedwindow.h:36:36: error: ‘LanczosCacheRole’ is not a member of ‘KWin::DataRole’
   36 |         BaseRole = KWin::DataRole::LanczosCacheRole + 100,
      |                                    ^~~~~~~~~~~~~~~~

This error is probably caused by an edit in kwineffects.h (See this commit).
In plugins/roundedwindow/roundedwindow.h:36 and plugins/roundedwindow/roundedwindow.cpp:273, Lanczous filter was used. However it was recently removed in kwineffects.h. Please consider an reimplementation.

[maravtdm]

KDE Team about the drop of lanczos filter
See:
KDE/kwin@683a222