[Libreoffice-bugs] [Bug 134213] Changed transparency handling in Draw breaks export to PNG of transparent objects over pictures with just default Layout layer, forces use of additional layer(s) for transparent shape(s)

bugzilla-daemon at bugs.documentfoundation.org bugzilla-daemon at bugs.documentfoundation.org
Sun Jul 12 00:00:14 UTC 2020


https://bugs.documentfoundation.org/show_bug.cgi?id=134213

--- Comment #32 from Regina Henschel <rb.henschel at t-online.de> ---
(In reply to Telesto from comment #19)
> 
> Bisected to:
> author	Mike Kaganski <mike.kaganski at collabora.com>	2020-05-28 20:13:50 +0200
> committer	Mike Kaganski <mike.kaganski at collabora.com>	2020-05-29 10:31:40
> +0200
> commit	c644b2b4abe3051c0e0fc91674154c796fd326f6 (patch)
> tree	391c0d15daa02bae90325a2d44b9a4cbbba01756
> parent	f510bdfa98014ca0ae596dcd0dfd487cfc90f3eb (diff)
> Use buffer with alpha in VclProcessor2D::RenderUnifiedTransparencePrimitive2D
> This allows UnifiedTransparencePrimitive2D to produce truly transparent
> image,
> usable later in the stack - specifically by glow and soft edge effect.
> 
> https://cgit.freedesktop.org/libreoffice/core/commit/
> ?id=c644b2b4abe3051c0e0fc91674154c796fd326f6


Reverting that patch solves the problem. Tested with reverting on Version:
7.1.0.0.alpha0+ (x64)
Build ID: b54f7fd93cc300fedac2f1b007dfc4e6a704b515
CPU threads: 8; OS: Windows 10.0 Build 18362; UI render: Skia/Vulkan; VCL: win
Locale: de-DE (en_US); UI: en-US
Calc: CL

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