Bug 2013

Summary: GLX & new Xorg Composite.
Product: xorg Reporter: Axodious <Mysterious>
Component: Driver/nVidia (open)Assignee: Xorg Project Team <xorg-team>
Status: RESOLVED NOTABUG QA Contact:
Severity: normal    
Priority: high    
Version: unspecified   
Hardware: x86 (IA32)   
OS: Linux (All)   
Whiteboard:
i915 platform: i915 features:

Description Axodious 2004-12-04 17:10:57 UTC 
When I tried using the new XComposite settings in xorg.conf

Section "Extensions"
Option "Composite" "Enable"
Option "RENDER" "Enable"
EndSection

They worked great even transparency was working great and with the NVidia 
acceleration it wasn't slow or anything...Then I tried playing Tuxracer and it 
failed to load the GLX for it. The exact error was:

Tux Racer 0.61 -- a Sunspire Studios Production (http://www.sunspirestudios.com)
(c) 1999-2000 Jasmin F. Patry <jfpatry@sunspirestudios.com>
"Tux Racer" is a trademark of Jasmin F. Patry
Tux Racer comes with ABSOLUTELY NO WARRANTY. This is free software,
and you are welcome to redistribute it under certain conditions.
See http://www.gnu.org/copyleft/gpl.html for details.

Xlib:  extension "GLX" missing on display ":0.0".
Xlib:  extension "GLX" missing on display ":0.0".
*** tuxracer error: Couldn't initialize video: Couldn't find matching GLX visual 
(Success)

When I commented out the composite lines in xorg.conf it ran perfectly fine.
Comment 1 Clemens Fruhwirth 2004-12-08 14:51:41 UTC 
This is intentional. Read nvidia README, it's somewhere in the appendix titled
"Composite extension".
Comment 2 Adam Jackson 2004-12-12 08:06:58 UTC 
ftp://download.nvidia.com/XFree86/Linux-x86/1.0-6629/README.txt

"Full Composite support will require additional driver support.  Currently,
direct rendering clients such as GLX have no way of knowing that they are
supposed to render into a pixmap, and will draw directly to the screen
instead.  We are currently investigating what is necessary for such clients
to interoperate seamlessly with Composite.  In the meantime, GLX will be
disabled by default when the Composite extension is detected.  An option
has been provided to re-enable it.  See 'Option "AllowGLXWithComposite"' in
(app-d) APPENDIX D: X CONFIG OPTIONS."

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