effects: Port invert effect to OffscreenEffect and drop WindowPaintData.shader
closes #97 (closed)
Added noteworthy label because of a breaking change in libkwineffects - removal of WindowPaintData.shader
Edited by Vlad Zahorodnii
closes #97 (closed)
Added noteworthy label because of a breaking change in libkwineffects - removal of WindowPaintData.shader