OpenGL "extension limit" on Linux?

galahman · 12-19-09, 09:03 PM

On the Windows nvidia control panel, there exists an 'extension limit' option to limit the length of the 'GL_EXTENSIONS' string (returned from glGetString funtion). What options are available on Linux for achieving the same effect?

Since upgrading to the 190 driver, some games have stopped working. The output from Return to Castle Wolfenstein (linux version) just before it crashes:

-----
GL_EXTENSIONS: GL_ARB_color_buffer_float GL_ARB_compatibility..(many extensions here)...GL_NV_vertex_program GL_NV_vertex_
Received signal 11, exiting...
-----

the GL_EXTENSIONS seem tobe truncated, possibly because the buffer is too small to hold all the extensions. I believe if 'extension limit' is activated in the Windows version, that string's size is reduced preventing program crashes. Is there such a setting on Linux, or is there some other way of achieving this? (game's source code is not available so recompiling to fix the bug is not an option)

**AaronP** · 12-20-09, 12:45 AM

Yes, please see the "some applications crash after querying the OpenGL extension string" entry in the known issues section of the README.

galahman · 12-21-09, 01:40 AM

Thanks, exactly what I was looking for.

12-19-09, 09:03 PM	#1
galahman Registered User Join Date: Dec 2009 Posts: 2	OpenGL "extension limit" on Linux? On the Windows nvidia control panel, there exists an 'extension limit' option to limit the length of the 'GL_EXTENSIONS' string (returned from glGetString funtion). What options are available on Linux for achieving the same effect? Since upgrading to the 190 driver, some games have stopped working. The output from Return to Castle Wolfenstein (linux version) just before it crashes: ----- GL_EXTENSIONS: GL_ARB_color_buffer_float GL_ARB_compatibility..(many extensions here)...GL_NV_vertex_program GL_NV_vertex_ Received signal 11, exiting... ----- the GL_EXTENSIONS seem tobe truncated, possibly because the buffer is too small to hold all the extensions. I believe if 'extension limit' is activated in the Windows version, that string's size is reduced preventing program crashes. Is there such a setting on Linux, or is there some other way of achieving this? (game's source code is not available so recompiling to fix the bug is not an option)

12-20-09, 12:45 AM	#2
AaronP NVIDIA Corporation Join Date: Mar 2005 Posts: 2,487	Re: OpenGL "extension limit" on Linux? Yes, please see the "some applications crash after querying the OpenGL extension string" entry in the known issues section of the README.

12-21-09, 01:40 AM	#3
galahman Registered User Join Date: Dec 2009 Posts: 2	Re: OpenGL "extension limit" on Linux? Thanks, exactly what I was looking for.