Created attachment 58004 [details] Nexuiz console output How to: 1. Startup Nexuiz 2. Select Settings>Effects 3. Set Antialiasing to 2x 4. Click Apply immediately 5. Observe the crash Issue is not present when * 0xAA, 4xAA mode is selected in Nexuiz * Software rendering is used - LIBGL_ALWAYS_SOFTWARE=1 Issue is independent on * kernel version * direct/indirect rendering - LIBGL_ALWAYS_INDIRECT=1 makes no difference * Desktop enviroment - Gnome3, fluxbox Distribution - Arch x86-64 Nexuiz - 2.5.2 Nexuiz Linux 02:51:06 Oct 1 2009 9271 release kernel - 3.0.22 / 3.2.8 / nouveau-git libdrm - 2.4.31 Mesa - 95594bae47d8b3302be188e6f0be2d69c5507bb3 xf86-video-nouveau - b0d7f4ddd94154491d04dcb9698d63d61e9240d Xorg - 1.11.4 The issue was bisected to commit b2dcf880e8bcd61be59602f5a2d18c77a5fc60c1 Author: Christoph Bumiller <e0425955@student.tuwien.ac.at> Date: Mon Jul 11 18:02:27 2011 +0200 nv50,nvc0: add support for multi-sample resources
Created attachment 58005 [details] nv50_screen_is_format_supported - debug info
Created attachment 58006 [details] nv50_screen_is_format_supported - debug info, disallow sample_count=2 Nexuiz works great if we return False when sample_count is 2
IMHO this is a mesa and/or X fault, although I'm out of ideas I'm happy to test any patches/provide any additional information Thanks Emil
Created attachment 58007 [details] Patch to disable MS visuals. Does that help ?
Works like a charm Note: Nexuiz complains about "Couldn't get an RGB, Double-buffered, Depth visual" Although everything works as expected Thanks Emil
The issue exists in xonotic 0.6 (nexuiz fork) I would not mind filing the bug in xonotic if it is an application issue Regards Emil
Thank you, the issue was resolved by commit f80c2874eca86a12517fbe2f4c15287edfb4dc89 Author: Christoph Bumiller <e0425955@student.tuwien.ac.at> Date: Mon May 21 23:46:11 2012 +0200 gallium: add st_api feature mask to prevent advertising MS visuals v2: use a define for the maximum sample count v3: also test odd sample counts (r300 supports MS3) While multisample renderbuffers are supported by mesa, MS visuals are not, so we need a way to tell dri/st not to advertise them even if the gallium driver does support multisampled surfaces. Otherwise applications selecting these non-functional visuals would run into trouble ... Reviewed-by: Brian Paul <brianp@vmware.com>
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