Re: [Chromium-users] Crash with DMX and Alpha

[Brian T. <bri...@gm...>]

I guess also important is that the same error occurs without using chromium
as well.  So I'm not sure if it is a chromium issue or a dmx issue.
However, if I run it using DISPLAY=:0, it works just fine.

Thanks!

On Thu, Mar 27, 2008 at 7:23 PM, Brian Paul <bri...@tu...>
wrote:

> Brian Thomas wrote:
> > We are running chromium on a display wall using DMX.  It seems to be
> > working well except for when we try to get a display mode with an alpha
> > channel.  For example, using GLUT_ALPHA.  One example program crashes
> > with the following message:
> >
> > X Error of failed request:  BadMatch (invalid parameter attributes)
> >   Major opcode of failed request:  144 (GLX)
> >   Minor opcode of failed request:  5 (X_GLXMakeCurrent)
> >   Serial number of failed request:  19
> >   Current serial number in output stream:  19
> >
> > Removing GLUT_ALPHA causes it to run without error.  We have had this
> > problem for several months now and would appreciate any suggestions.
>
> In your config file, try setting the 'default_visual' option for your
> render SPUs.  For example:
>
> renderspu.Conf('default_visual', 'rgb, double, depth, stencil, alpha')
>
>
> Otherwise, the problem is likely that the Cr version of
> glXChooseVisual() in opengl_stub/glx.c is returning a different GLX
> visual ID than what's being chosen in spu/render/renderspu_glx.c
>
> You might try instrumenting the crChooseVisual() function in
> spu_loader/choosevisual.c to print the incoming attribute list and
> returned visual ID.  That might give a clue.
>
> -Brian
>
>


-- 
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Brian Thomas
bj...@ms...
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