628121 - Vertical lines appears in SVG object

Status: RESOLVED WORKSFORME

(Core :: Graphics, defect)

Description

[Daniel Hoffend]

User-Agent:       Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b9) Gecko/20100101 Firefox/4.0b9
Build Identifier: 4.0b9

I heavyly use SVG to generate maps, etc. When rendering objects (rectangles) random vertical lines are shown. This problem doesn't exist in Firefox 3, Chrome or any other browser i've seen so far.

Reproducible: Always

Steps to Reproduce:
1. Open the link above and check the map rendering.
2. Zoom into the page so the system rectangles appear
3.
Actual Results:  
Vertical lines appear in the map

Expected Results:  
clean rendering (compared to FF3, etc)

Comment 1

[Daniel Hoffend]

Attachment: svg graphic error (vertial lines)

Comment 2

[Daniel Hoffend]

Attachment: clean rendering (what it should look like)

Comment 3

[Robert Longson [:longsonr]]

Works fine for me. If you turn hardware acceleration off (Options->Advanced->General and then deselect the hardware acceleration checkbox and restart the browser) does that fix it for you?

Comment 4

[Daniel Hoffend]

Yes. With HW acceleration it works fine.

Okay I could reproduce this way: 
1) [X] HW Acceleration
2) Close my browser
3) Open browser with svg page
=> Display errors (vertical lines)

4) [ ] HW Acceleration
=> Display errors gone (even after browser restart)

5) [X] HW Acceleration 
6) Restart browser
7) Check svg map again
=> Display errors (vertical lines)

I'm using an Thinkpad X201 with integrated "Intel(R) HD Graphics" chipset. Drivers are updated.

Comment 5

[Joe Drew (not getting mail)]

Daniel, can you post the Graphics section of about:support to this bug?

Comment 6

[Daniel Hoffend]

Here's the graphic support section (german version)

Karten-Beschreibung:        Intel(R) HD Graphics
Vendor-ID:                  8086
Geräte-ID:                  0046
Karten-Ram:                 Unknown
Karten-Treiber:             igdumd64 igd10umd64 igdumdx32 igd10umd32
Treiber-Version:            8.15.10.2253
Treiber-Datum:              11-28-2010
Direct2D aktiviert:         true
DirectWrite aktiviert:      true
WebGL-Renderer:             TransGaming Inc. -- ANGLE -- OpenGL ES 2.0 (git-devel Jan 10 2011 19:54:16)
GPU-beschleunigte Fenster:  1/1 Direct3D 10

Comment 7

[Joe Drew (not getting mail)]

Likely a D2D issue.

Comment 8

[Bas Schouten (:bas.schouten)]

Fwiw this doesn't reproduce on my ATI card.

Comment 9

[Bas Schouten (:bas.schouten)]

I wonder if this is a hardware problem, is anyone else seeing this on Intel HD graphics?

Comment 10

[Mike Beltzner [:beltzner, not reading bugmail]]

** PRODUCT DRIVERS PLEASE NOTE **

This bug is one of 7 automatically changed from blocking2.0:final+ to blocking2.0:.x during the endgame of Firefox 4 for the following reasons:

 - it was marked as a soft blocking issue without a requirement for beta coverage

Comment 11

[Joe Drew (not getting mail)]

I don't see this on my Intel graphics card:

Adapter Description	Intel(R) HD Graphics Family
Vendor ID		0x8086
Device ID		0x0116
Adapter RAM		Unknown
Adapter Drivers		igdumd64 igd10umd64 igd10umd64 igdumdx32 igd10umd32 igd10umd32
Driver Version		8.15.10.2430
Driver Date		6-26-2011
Direct2D Enabled	true
DirectWrite Enabled	true (6.1.7600.16385)
ClearType Parameters	ClearType parameters not found
WebGL Renderer		Google Inc. -- ANGLE (Intel(R) HD Graphics Family) -- OpenGL ES 2.0 (ANGLE 1.0.0.930)
GPU Accelerated Windows	1/1 Direct3D 10
AzureBackend		direct2d

This might be device-specific, or it could be a hardware problem.

For now, I'm going to call this worksforme. Please reopen if you can still see problems.