1012213 - [OMTC] Visual glitch

Status: RESOLVED FIXED

(Core :: Graphics: Layers, defect)

Description

[Alice0775 White]

Attachment: screenshot

Steps To Reproduce:
1. Start Browser with OMTC
2. Browser normal size mode
3. Open https://bugzilla.mozilla.org/show_bug.cgi?id=671302 foe example
4. Zoom in several times if necessary
5. Scroll down
6. Maximized

Actual Results:
Visual glitch happens

Graphics
--------

Adapter Description: ATI Radeon HD 4300/4500 Series
Adapter Drivers: aticfx64 aticfx64 aticfx32 aticfx32 atiumd64 atidxx64 atiumdag atidxx32 atiumdva atiumd6a atitmm64
Adapter RAM: 512
ClearType Parameters: Gamma: 2200 Pixel Structure: R ClearType Level: 100 Enhanced Contrast: 50
Device ID: 0x954f
Direct2D Enabled: true
DirectWrite Enabled: true (6.1.7601.18245)
Driver Date: 4-29-2013
Driver Version: 8.970.100.1100
GPU #2 Active: false
GPU Accelerated Windows: 1/1 Direct3D 11 (OMTC)
Vendor ID: 0x1002
WebGL Renderer: Google Inc. -- ANGLE (ATI Radeon HD 4300/4500 Series Direct3D9Ex vs_3_0 ps_3_0)
windowLayerManagerRemote: true
AzureCanvasBackend: direct2d
AzureContentBackend: direct2d
AzureFallbackCanvasBackend: cairo
AzureSkiaAccelerated: 0

Comment 1

[Mayank Bansal]

possible dupe : bug 1011877

Comment 2

[Alice0775 White]

Regression window(m-c)
Good:
https://hg.mozilla.org/mozilla-central/rev/827f4dc53387
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:32.0) Gecko/20100101 Firefox/32.0 ID:20140515154728
Bad:
https://hg.mozilla.org/mozilla-central/rev/58c5a3427997
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:32.0) Gecko/20100101 Firefox/32.0 ID:20140515160029
Pushlog:
http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=827f4dc53387&tochange=58c5a3427997


Regression window(m-c)
Good:
https://hg.mozilla.org/integration/mozilla-inbound/rev/72b6e86b29d8
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:32.0) Gecko/20100101 Firefox/32.0 ID:20140514151617
Bad:
https://hg.mozilla.org/integration/mozilla-inbound/rev/2430884972b6
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:32.0) Gecko/20100101 Firefox/32.0 ID:20140514153220
Pushlog:
http://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=72b6e86b29d8&tochange=2430884972b6

Comment 3

[Alice0775 White]

Last Good: 72b6e86b29d8
First Bad: 96395ad2aac9

Triggered by:	96395ad2aac9	Bas Schouten — Bug 1002300: Only lazily create the backbuffer for ContentClientDoubleBuffered. r=nical

Comment 4

[(mostly gone) XtC4UaLL [:xtc4uall]]

Attachment: chrome_ui_issue.png

FWIW, this also happens in chrome (i.e. not only content), when e.g. scrolling a list of menuitems with mousewheel in folders if you use the bookmark toolbar.

Adapter Description: Intel(R) HD Graphics
Adapter Description (GPU #2): NVIDIA GeForce 310M
Adapter Drivers: igdumd64 igd10umd64 igdumdx32 igd10umd32
Adapter Drivers (GPU #2): nvd3dumx,nvwgf2umx,nvwgf2umx nvd3dum,nvwgf2um,nvwgf2um
Adapter RAM: Unknown
Adapter RAM (GPU #2): 512
ClearType Parameters: Gamma: 2200 Pixel Structure: R ClearType Level: 100 Enhanced Contrast: 300
Device ID: 0x0046
Device ID (GPU #2): 0x0a70
Direct2D Enabled: true
DirectWrite Enabled: true (6.2.9200.16571)
Driver Date: 1-30-2013
Driver Date (GPU #2): 3-4-2014
Driver Version: 8.15.10.2993
Driver Version (GPU #2): 9.18.13.3523
GPU #2 Active: false
GPU Accelerated Windows: 1/1 Direct3D 11 (OMTC)
Vendor ID: 0x8086
Vendor ID (GPU #2): 0x10de
WebGL Renderer: Intel -- Intel(R) HD Graphics
windowLayerManagerRemote: true
AzureCanvasBackend: direct2d
AzureContentBackend: direct2d
AzureFallbackCanvasBackend: cairo
AzureSkiaAccelerated: 0

Comment 5

[Marc Auslander]

This looks similar to bug 1014166 which appeared between 5/15 and 5/16.

Comment 10

[Marc Auslander]

Bug 1014166 can be reproduced with layers.offmainthreadcomposition.enabled false.  Is this pref still operative or is the old code gone?

Comment 12

[Bas Schouten (:bas.schouten)]

I can reproduce some issues, this shouldn't be hard to fix, I'll work on this.

Comment 13

[Bas Schouten (:bas.schouten)]

Attachment: Do not reset the back buffer rect

My code added clearing of the backbuffer rect to this creation function. I think that was a mistake and the caller should manage this. This patch appears to fix the issues, I've sent it to try to see if it passes our tests.

Comment 14

[Bas Schouten (:bas.schouten)]

https://hg.mozilla.org/integration/mozilla-inbound/rev/8286affa4d6e

Comment 15

[Carsten Book [:Tomcat]]

https://hg.mozilla.org/mozilla-central/rev/8286affa4d6e