🎉 Add pixelate effect

kwin/pixelate/onSettingsChanged.js

@@ -0,0 +1,6 @@
+// This part is automatically included in the effect's source during the build process.
+// The code below is called whenever the user changes something in the configuration of
+// the effect.
+
+effect.setUniform(this.shader, 'uNoise', effect.readConfig('Noise', 1.0));
+effect.setUniform(this.shader, 'uPixelSize', effect.readConfig('PixelSize', 1.0));