[Mesa-dev] [Bug 42128] Crash when visiting a site with Firefox

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Wed Feb 22 14:13:30 PST 2012


--- Comment #11 from Ian Romanick <idr at freedesktop.org> 2012-02-22 14:13:30 PST ---
(In reply to comment #10)
> I get the crash with this error too (865G):
> $  firefox
> Mesa 8.1-devel implementation error: unexpected format GL_DEPTH_COMPONENT24 in
> _mesa_choose_tex_format()

Can you set a breakpoint a _mesa_problem and collect a backtrace?

> Please report at bugs.freedesktop.org
> firefox: main/formats.c:1556: _mesa_get_format_bytes: Assertion
> `info->BytesPerBlock' failed.
> A Firefox developer said this is a bug in mesa
> https://bugzilla.mozilla.org/show_bug.cgi?id=696636#c12
> 00:02.0 VGA compatible controller: Intel Corporation 82865G Integrated Graphics
> Controller (rev 02)
> mesa 8.1-git  6e738d35c5c88769ececbadd5f4ac14d36647168
> intel 2.17-git     66cc9c69657ac2703f2c7fc3c2c50f06bf5daa99
> libdrm 2.4.31-git 9b3ad51ae5fd9654df8ef75de845a519015150bb
> linux 3.2.6

The bigger question is why is Firefox even trying to use this driver to provide
WebGL support?  This hardware cannot possibly handle it.  At all.  WebGL
requires either OpenGL ES 2.0 or desktop GL with ARB_fragment_shader.  As you
can see from the glxinfo output, this hardware has none of the above.

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