Build failure on latest KWin/Plasma: Missing wayland/blur.h and API signature mismatches (v2.4.1)

[omartayel]

Description:

Hello! I am trying to build and install version 2.4.1 of kwin-effects-better-blur-dx via the AUR on CachyOS, but the compilation fails. It appears there are incompatibilities with the current KWin C++ API development headers in the latest Plasma update.

Specifically, the compiler cannot find wayland/blur.h, and there are multiple errors regarding overridden functions (prePaintScreen, prePaintWindow) no longer matching the parent KWin::BlurEffect class signatures. There is also an issue with KWin::scaledRect missing.

Environment:

OS: CachyOS (Arch Linux based)

KDE Plasma Version: 6.7.0

Package Version: 2.4.1 (Built via paru)

Steps to Reproduce:

1. Attempt to build the package on a fully updated Arch/CachyOS system running the latest KDE Plasma.
2. Run paru -S kwin-effects-better-blur-dx.
3. The build process terminates during compilation.

Error Logs:

/home/omar/.cache/paru/clone/kwin-effects-better-blur-dx/src/kwin-effects-better-blur-dx-2.4.1/src/blur.cpp:44:10: fatal error: wayland/blur.h: No such file or directory
   44 | #include <wayland/blur.h>
      |          ^~~~~~~~~~~~~~~~
compilation terminated.

...

In file included from /home/omar/.cache/paru/clone/kwin-effects-better-blur-dx/src/kwin-effects-better-blur-dx-2.4.1/src/rounded_corners_pass.cpp:3:
/home/omar/.cache/paru/clone/kwin-effects-better-blur-dx/src/kwin-effects-better-blur-dx-2.4.1/src/blur.h:99:10: error: 'void KWin::BlurEffect::prePaintScreen(KWin::ScreenPrePaintData&, std::chrono::milliseconds)' marked 'override', but does not override
   99 |     void prePaintScreen(ScreenPrePaintData &data, std::chrono::milliseconds presentTime) override;
      |          ^~~~~~~~~~~~~~

...

/home/omar/.cache/paru/clone/kwin-effects-better-blur-dx/src/kwin-effects-better-blur-dx-2.4.1/src/blur.h:103:10: error: 'void KWin::BlurEffect::prePaintWindow(KWin::RenderView*, KWin::EffectWindow*, KWin::WindowPrePaintData&, std::chrono::milliseconds)' marked 'override', but does not override
  103 |     void prePaintWindow(RenderView *view, EffectWindow *w, WindowPrePaintData &data, std::chrono::milliseconds presentTime) override;
      |          ^~~~~~~~~~~~~~

...

/home/omar/.cache/paru/clone/kwin-effects-better-blur-dx/src/kwin-effects-better-blur-dx-2.4.1/src/rounded_corners_pass.cpp: In member function 'void BBDX::RoundedCornersPass::apply(const KWin::BorderRadius&, const KWin::RenderViewport&, const QRect&, const KWin::BlurRenderData&, const KWin::EffectWindow*, const KWin::GLVertexBuffer*, const BBDX::BlurCache*) const':
/home/omar/.cache/paru/clone/kwin-effects-better-blur-dx/src/kwin-effects-better-blur-dx-2.4.1/src/rounded_corners_pass.cpp:63:63: error: 'scaledRect' is not a member of 'KWin'
   63 |         const QRectF nativeBox = KWin::snapToPixelGridF(KWin::scaledRect(transformedRect, viewport.scale()))
      |                                                               ^~~~~~~~~~

Expected Behavior:

The C++ source compiles successfully against the current KWin development headers.

Please let me know if there are any additional logs are needed. Thank you for your work on this project!

[TheSheff93]

#95 The current release doesn't have support for plasma 6.7.