[GtkGLExt] Re : Off-screen pixmap rendering doesn't work

[cbeau <cbeauc gmail com>]

Hi Damien,

Thanks for your suggestion. Setting 'Option "AIGLX" "off"' in the
ServerFlags section of
your /etc/X11/xorg.conf fixed the problem. Disabling DRI also fixes
the problem. Unfortunately both solutions make rendering SIGNIFICANTLY
slower. Note that I am also seeing this problem with my ATI
Technologies, Inc. RV280 [Radeon 9200 PRO] card using the "radeon"
driver.

If anyone knows of any other fix for the problem that doesn't have
slower rendering as a side effect, or has any more info on the nature
of this problem, please let me know.

Thanks,
cbeau.

2007/2/5, Damien Caliste <dcaliste free fr>:
> Hello,
>
>    First, I apologise since I don't know how to answer the last mail of
> the thread through the HTML archive page...
>
>    The problem of offscreen rendering you encountered is not due to
> gtkglext. I've got the same configuration than you (i810 + DRI + Xorg
> 7.1.1) and the offscreen rendering is not working from whatever OpenGL
> code used (gtkglext or another). The error raised is GLXBadContext, as
> you mentionned.
>
>    I've found a turn around than is to turn off the AIGLX extension
> from Xorg, as mentioned in a thread from Fedora
> (http://folk.ntnu.no/gronslet/blog/2006/10/07/fedora-core-6-on-the-dell-x1-discussion/).
>
>    To do it, add 'Option "AIGLX" "off"' in the ServerFlags section of
> your /etc/X11/xorg.conf file). Then, the error may be related to DRI
> (since it doesn't appear when DRI is turned off) and to AIGLX.
>
> Damien.