700050 - Color becomes wrong when the width of the browser is narrower than content.(Windows7 Aero, D3D10)

Status: RESOLVED DUPLICATE of bug 701528

(Core :: Graphics, defect)

Description

[Alice0775 White]

Attachment: sample html

Build Identifier:
http://hg.mozilla.org/mozilla-central/rev/ae9e5bf847fc
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:10.0a1) Gecko/20111105 Firefox/10.0a1 ID:20111105031111

I encountered a problem when I tested Bug 699987 .
Color becomes wrong when the width of the browser is narrow than content.
This does not happen on Aero Basic and Classic.

If I set layers.prefer-d3d9 to true, the problem is gone.

Screen capture:
 http://www.youtube.com/watch?v=5Urd13E5MfM

Reproducible: Sometimes

Steps to Reproduce:
1. Start Firefox with clean profile
2. Open sample html
3. Shrink browser width


Actual Results:
  Color becomes wrong

Expected Results:
  Color should not be changed

Regression window(cached m-c),
Works:
http://hg.mozilla.org/mozilla-central/rev/f262c389193e
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:8.0a1) Gecko/20110812 Firefox/8.0a1 ID:20110812030744
Fails:
http://hg.mozilla.org/mozilla-central/rev/3c8f87c6cbc6
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:8.0a1) Gecko/20110812 Firefox/8.0a1 ID:20110812065831
Pushlog:
http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=f262c389193e&tochange=3c8f87c6cbc6


Regression window(cached m-i)
Works:
http://hg.mozilla.org/integration/mozilla-inbound/rev/792eb2aff315
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:8.0a1) Gecko/20110811 Firefox/8.0a1 ID:20110811142310
Fails:
http://hg.mozilla.org/integration/mozilla-inbound/rev/febd4e26179c
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:8.0a1) Gecko/20110811 Firefox/8.0a1 ID:20110811175210
Pushlog:
http://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=792eb2aff315&tochange=febd4e26179c

Triggered by:
0e37f12a6641	Robert O'Callahan — Bug 677095. Compute reasonable destination alpha values with component-alpha blending in D3D10. r=bas


Graphics:
 Adapter Description: ATI Radeon HD 4300/4500 Series
 Vendor ID: 1002
 Device ID: 954f
 Adapter RAM: 512
 Adapter Drivers: aticfx64 aticfx64 aticfx32 aticfx32 atiumd64 atidxx64 atiumdag atidxx32 atiumdva atiumd6a atitmm64
 Driver Version: 8.902.0.0
 Driver Date: 10-12-2011
 Adapter RAM (GPU #2): Unknown
 Adapter Drivers (GPU #2): Unknown
 Direct2D Enabled: true
 DirectWrite Enabled: true (6.1.7601.17563)
 ClearType Parameters: Gamma: 2200 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 50 
 WebGL Renderer: Google Inc. -- ANGLE (ATI Radeon HD 4300/4500 Series) -- OpenGL ES 2.0 (ANGLE 0.0.0.809)
 GPU Accelerated Windows: 1/1 Direct3D 10

Comment 1

[Alice0775 White]

s/Reproducible: Sometimes/Reproducible: Always/

Comment 2

[Alice0775 White]

http://hg.mozilla.org/integration/mozilla-inbound/rev/33547cc48103
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:11.0a1) Gecko/20111113 Firefox/11.0a1 ID:20111113204348

After landing of Bug 701528 fixes this problem.