luebking added a comment.
I think what David has in mind is a shadow constellation like
o----o
| |
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with the lower edges deliberately being omitted - this will cause glitchy
rendering (because the bottom edge will be stretched over the edges) - thus
he's looking for an entirely casual quad handling (instead of the present one
that expects a regular shape with at best some sides being entirely omitted)
Marco "just" wants to make cases legal, where a window has only edges on one
or two opposing sides - there should maybe an additional sanity check to ensure
this: only width OR height should be zero at some point and the other value
should match the sum of the other axis of the invoked left/right resp.
top/bottom edges.
INLINE COMMENTS
> scene_opengl.cpp:2267
>
> tx2 = topLeft.width()/width;
> ty2 = topLeft.height()/height;
This is uncaught here (and in several other occasions but is caught in the
other function) and apparently (at least has been) a somewhat legal condition
...
REPOSITORY
R108 KWin
REVISION DETAIL
https://phabricator.kde.org/D6141
To: mart, #plasma, #kwin, graesslin
Cc: luebking, mvourlakos, davidedmundson, plasma-devel, kwin, ZrenBot, spstarr,
progwolff, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, mart,
lukas
