https://bugs.kde.org/show_bug.cgi?id=452373
--- Comment #5 from Silas Della Contrada <s....@4-dc.de> --- (In reply to doncbugs from comment #4) > I don't really understand what you mean by "adding a border with the same > thickness". Are you saying KDE shipped with changes to the blur mask such > that it would be impossible for the blur to meet with the corners of the > dialog? i.e. there would be a border regardless of what was specified in the > svg? Yes, the inset of the blur region is not specified by the SVG, but hard coded into the blur effect. > I'm not good with the code specifics, but to put into words what I felt > making my theme's mask meet with corners cleanly (given that the mask is not > anti-aliased), I felt that the way the mask was calculated just needed to be > a little less aggressive with determining if a pixel was blurred or not. I > remember previous themes' svgs always reduced the mask by about .5 pixels to > combat this. Then, for straight edges (e.g. top, left, right, bottom) the .5 > would round up to 1 and they would meet cleanly with the edges. For curved > edges, less pixels would be included in the mask (because rounded down?). The mask isn't anything complicated, iirc, just a rectangle that gets processed. > If the above can somehow be put into code, I think we could have a pretty > decent aliased mask. The criteria for rounding up a pixel in the mask just > needs to be less lenient. Perhaps .6 would be enough coverage to be > considered a fully blurred pixel. However, I know firsthand this is a > complicated procedure, and needs to take into account different types of > rounded corners at different scalings. Obviously, I have no clue if the > code lines up with what I said, but it's just a thought. It should be possible to implement that, but you would need to get the corner radius from the theme, treat different window types differently, apply output scaling and implement a stencil with OpenGL. Overall, more than a little bugfix, in the meantime I would recommend this plugin to you, it allows setting the corner radius manually: https://github.com/Alban-Boissard/kwin-effects-blur-respect-rounded-decorations -- You are receiving this mail because: You are watching all bug changes.
