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Re: [Public WebGL] Getting FF4 to use ANGLE
- To: Vangelis Kokkevis <email@example.com>
- Subject: Re: [Public WebGL] Getting FF4 to use ANGLE
- From: Steve Baker <firstname.lastname@example.org>
- Date: Mon, 15 Nov 2010 06:14:01 -0600
- Cc: public webgl <email@example.com>
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My son's netbook has the GMA 950 chip - it runs WebGL in Chrome - but
not (so far) in Firefox/Minefield.
Intel graphics drivers are definitely not the best of the bunch and the
GMA 950 is decidedly borderline for WebGL. The hardware doesn't
support vertex shaders - so the driver runs them in the CPU and hence
your vertex performance rates are poor by desktop standards (Do you
remember the days before hardware transform and lighting?...Think
that!). It has hardware fragment shaders - but they are severely
limited. I have to use greatly simplified shaders to get them to
compile on the GMA 950. The pixel fill rate is abysmal - so you'll want
to stick with small windows and simple shaders.
The only OpenGL support for that chip is OpenGL1.4 - which is a
pre-shader API and therefore doesn't support WebGL at all.
ANGLE is the only option for this chip.
I really wish Intel would get out of the graphics business!
Having said that, it does run my game - albeit at only about 9 frames a
second in a small window and 4 frames a second full-screen.
On 11/15/2010 01:46 AM, Vangelis Kokkevis wrote:
> Hi Mark,
> I can't speak for the other browsers but have you tried running
> Chrome? It uses ANGLE by default on windows.
> On Sun, Nov 14, 2010 at 11:31 PM, Mark Callow
> <firstname.lastname@example.org <mailto:email@example.com>> wrote:
> I'm trying to see if I can get WebGL content to run accelerated on
> my notebook computer (Panasonic Let's Note with a 1.06GHz Core2
> CPU, an on-board Intel GMA 950 graphics chip and DirectX 9). The
> GL driver for this chip is reputedly not good so I want to try
> ANGLE. I got the latest Minefield build (4.0b8pre).
> webgl.mochitest_native_gl is at the default "false" setting. I
> thought this would mean it would use ANGLE but I haven't had any
> luck running any of the demos from the wiki. Most indicate
> inability to obtain a webgl context but at least 1 just gives an
> empty page.
> How do I force FF to use ANGLE?
> P.S. Does the Android version of FF4 support WebGL yet?
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