15319 - glitch with scrolling & incremental painting

Status: VERIFIED DUPLICATE of bug 41386

(Core Graveyard :: GFX, defect, P3)

Description

[kipp]

Not sure I know who to assign this to, but I'm starting with the compositor.

(you will need to install the resources it uses in res/leaky if you are not and
linux and have leaky enabled; see the Makefile.in in tools/mozilla/leaky for
what resources you will need)

The glitch is this: if you use the viewer to look at the test case and open up
several of the elements in the tree until you get a scroll bar, then scroll the
window slightly, then click to close things back up so that you no longer need a
scrollbar THEN you will end up with an invalid display...Anything that triggers
a repaint fixes it...

Comment 1

[kipp]

Attachment: my test case

Comment 2

[Patrick C. Beard]

Reassigning all compositor bugs to kevin.

Comment 3

[Peet McKimmie]

Attachment: Demonstration of scroll/redraw bug, Milestone 14, 24/03/2000

Comment 4

[Peet McKimmie]

The demonstration GIF dated 03/24/00 06:35 shows how the scrolling redraw bug 
interacts with the AllAdvantage viewbar under NT4 SP4, implying the problem 
might be connected with different physical/logical screen heights confusing the 
off-screen buffering algorithm (?) - Peet

Comment 5

[Kevin McCluskey (gone)]

*** This bug has been marked as a duplicate of 41386 ***

Comment 6

[Matt Perry]

Verified duplicate.