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Bug 345650

Summary:

FillGradientRectangle results in screen cheese on x86_64

Product:

[Eclipse Project] Platform

Reporter:

Bogdan Gheorghe <gheorghe>

Component:

SWT

Assignee:

Bogdan Gheorghe <gheorghe>

Status:

RESOLVED FIXED

QA Contact:

Severity:

normal

Priority:

CC:

niels, overholt, pwebster, remy.suen, Silenio_Quarti

Version:

3.7

Flags:

carolynmacleod4: review+
grant_gayed: review+
Silenio_Quarti: review+

Target Milestone:

3.7 RC3

Hardware:

OS:

Linux-GTK

Whiteboard:

Attachments:

Description	Flags
Snippet	none
Pic	none
Proposed Patch	none

Description Bogdan Gheorghe

2011-05-12 15:42:08 EDT

On GTK > 2.18 with certain versions of X (seen on 1.10.1 and 1.9.5 to date), calling fillGradientRectangle will result in screen cheese.

Comment 1 Bogdan Gheorghe

2011-05-12 17:07:47 EDT

Created attachment 195548 [details]
Snippet

Here is a snippet that draws 2 rectangles - one red one, and then a gradient one on top of the red one. The red rectangle should be one pixel larger than the gradient one and there is a loop that increments the size by one for each line. 

You will see that for some sizes some black is drawn at the end of the gradient rectangle.

Comment 2 Bogdan Gheorghe

2011-05-12 17:08:07 EDT

Created attachment 195549 [details]
Pic

Comment 3 Bogdan Gheorghe

2011-05-19 11:10:24 EDT

Moving to RC3.

Comment 4 Bogdan Gheorghe

2011-05-24 15:40:35 EDT

Created attachment 196482 [details]
Proposed Patch

Patch that adds property to turn Cairo on for all GCs

Comment 5 Bogdan Gheorghe

2011-05-24 17:09:06 EDT

Fixed in HEAD > 20110524

Comment 6 Paul Webster

2011-05-26 11:55:37 EDT

I don't see the black lines at the end of stacks any more with I20110526-0630

PW

Comment 7 Andrew Overholt

2011-05-26 13:48:03 EDT

FWIW I don't see the black lines at the end of the stacks with a 3.6 SWT or with a 3.7RC1 SWT.  I'm on gtk2-2.24.4-1.fc15.x86_64.