Bug 58583

Summary:	line_to render badly on drawable if interfered with the gtk events
Product:	cairo	Reporter:	genetita
Component:	xlib backend	Assignee:	Chris Wilson <chris>
Status:	RESOLVED MOVED	QA Contact:	cairo-bugs mailing list <cairo-bugs>
Severity:	normal
Priority:	medium
Version:	1.12.2
Hardware:	x86-64 (AMD64)
OS:	All
Whiteboard:
i915 platform:		i915 features:
Attachments:	Screencast of the problem

Description genetita 2012-12-20 19:23:39 UTC

I've prepared a simple application that receive clicks from the mouse on a window, store the clicked point and draws lines from all the stored points to all the rest of points, like a N graph.

It works fine for the first 10, 20 points but when you reach a certain number of points the render gets floods on certain areas. 
Resize the window sometimes fixes the problem sometimes not.

It happens in Ubuntu Linux 12.04 64 bits and Mac OSX 10.7.5

Libraries used:
gtk+-2.0, version 2.24.11
cairo, version 1.12.2

Please see the source files used here:
git clone https://github.com/genete/my-test-area.git

Comment 1 genetita 2012-12-20 19:33:30 UTC

Created attachment 71868 [details]
Screencast of the problem

Comment 2 Chris Wilson 2012-12-20 19:55:49 UTC

Looks like the BigReq overflow for CompositeTrapezoids

Comment 3 GitLab Migration User 2018-08-25 13:29:39 UTC

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