https://bugs.documentfoundation.org/show_bug.cgi?id=156808
Patrick Luby <plub...@neooffice.org> changed:
What |Removed |Added
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Assignee|libreoffice-b...@lists.free |plub...@neooffice.org
|desktop.org |
--- Comment #8 from Patrick Luby <plub...@neooffice.org> ---
(In reply to Patrick Luby from comment #7)
> Update: edges are blurred properly with Skia/Metal on macOS. The failure to
> blur the edges only occurs with Skia/Raster and Skia disabled.
After some debugging, I am seeing the break get executed (i.e. the alpha mask
is empty) at drawinglayer/source/primitive2d/softedgeprimitive2d.cxx:198 when
blurring the edges fails:
// Get the Alpha and use as base to blur and apply the effect
AlphaMask aMask(aBitmapEx.GetAlphaMask());
if (aMask.IsEmpty()) // There is no mask, fully opaque
break;
So, my current theory is that after the transparency->alpha patch, we now need
to do some special handling when there is an empty alpha mask.
I will post another update when I have more news.
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