https://bugs.documentfoundation.org/show_bug.cgi?id=142394
Bug ID: 142394
Summary: Slow drawing of semi-transparent large color object
Product: LibreOffice
Version: 7.2.0.0.alpha0+ Master
Hardware: All
OS: All
Status: UNCONFIRMED
Severity: normal
Priority: medium
Component: graphics stack
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Created attachment 172198
--> https://bugs.documentfoundation.org/attachment.cgi?id=172198&action=edit
testcase
The attached document has a full-page graphic object that is slow to draw when
using e.g. mouse-wheel to scroll up and down.
It is especially noticeable when using gtk3 VCL backend. The primary cost seems
to be in VclProcessor2D::RenderFillGraphicPrimitive2D(), where it draws the
object using ~10k tiny bitmaps.
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