626236 - D3D9 layer acceleration does not work for

Status: RESOLVED INVALID

(Core :: Graphics, defect)

Description

[JK]

User-Agent:       Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b9) Gecko/20100101 Firefox/4.0b9
Build Identifier: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b10pre) Gecko/20110116 Firefox/4.0b10pre

The pref "layers.prefer-d3d9" disables layer acceleration completely according to about:support.

With layers.prefer-d3d9 false (default):

Adapter Description ATI Radeon HD 4600 Series

Vendor ID 1002

Device ID 9498

Adapter RAM 1024

Adapter Drivers aticfx64 aticfx64 aticfx32 aticfx32 atiumd64 atidxx64 atiumdag atidxx32 atiumdva atiumd6a atitmm64

Driver Version 8.801.0.0

Driver Date

Direct2D Enabled true

DirectWrite Enabled true (6.1.7600.20830)

WebGL Renderer TransGaming Inc. -- ANGLE -- OpenGL ES 2.0 (git-devel Jan 16 2011 04:05:41)

GPU Accelerated Windows 1/1 Direct3D 10

With layers.prefer-d3d9 true:

GPU Accelerated Windows 0/1

(otherwise same)

Reproducible: Always

Actual Results:  
GPU Accelerated Windows 0/1

Expected Results:  
GPU Accelerated Windows 1/1 Direct3D 9

Comment 1

[Csaba Kozák [:WonderCsabo]]

About:support says D2D and DW is enabled with D3D9 layers for me.

Comment 2

[JK]

Regression window:

Working:
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b8pre) Gecko/20101207 Firefox/4.0b8pre
http://hg.mozilla.org/mozilla-central/rev/4d16d58becaf

Not working:
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b8pre) Gecko/20101208 Firefox/4.0b8pre
http://hg.mozilla.org/mozilla-central/rev/95452499f3d6

Pushlog:
http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=4d16d58becaf&tochange=95452499f3d6

Comment 3

[JK]

Could it be caused by this:

aa593835cb8d	Bas Schouten — Bug 595277 - Part 4: Delay Direct3D 9 initialization when possible. r=roc a=blocking-final

Comment 4

[Bas Schouten (:bas.schouten)]

First, this shouldn't be too hard so it shouldn't be hard to get a patch in.

I don't think this blocks the release though, we've removed D3D9 and D2D interop mode and the combination will now be extremely slow, to the point we're considering to remove this code all together. Disabling D2D will effectively switch you to D3D9/GDI usage.

Comment 5

[Joe Drew (not getting mail)]

The entire set of layers prefs (aside, perhaps, for .acceleration.disable) exist only for testing, and them being broken doesn't block the release.

Comment 6

[JK]

This affects "gfx.direct2d.disabled" also. If "gfx.direct2d.disabled" is true, there will be no layer acceleration at all. D3D9 is broken completely? Isn't D3D9 + GDI a supported combination?

Comment 7

[JK]

layers.prefer-d3d9;false
gfx.direct2d.disabled;true

GPU Accelerated Windows 0/1

Comment 8

[Bas Schouten (:bas.schouten)]

(In reply to comment #6)
> This affects "gfx.direct2d.disabled" also. If "gfx.direct2d.disabled" is true,
> there will be no layer acceleration at all. D3D9 is broken completely? Isn't
> D3D9 + GDI a supported combination?

Hmm, that's odd, when I disable Direct2D I just get D3D9+GDI.

Comment 9

[Bas Schouten (:bas.schouten)]

Wait a second, did you make sure to load/refresh about:support say, 20-30 seconds after starting firefox?

Comment 10

[JK]

It starts working after about 5 seconds.

Comment 11

[Bas Schouten (:bas.schouten)]

Excellent! That's intended behavior to speed up your start-up time :)