<div dir="ltr"><div>You can also check with this tool: <a href="https://secure.freedesktop.org/~imirkin/glxinfo/glxinfo.html#v=Mesa%2010.6.0">https://secure.freedesktop.org/~imirkin/glxinfo/glxinfo.html#v=Mesa%2010.6.0</a> </div>Anyway, regarding the users complaining about GL3.2 core context fail, you should check what hardware they have. </div><div class="gmail_extra"> <div class="gmail_quote">2015-11-26 12:41 GMT+01:00 Albert Freeman <<a href="mailto:albertwdfreeman@gmail.com" target="_blank">albertwdfreeman@gmail.com</a>>: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="HOEnZb"><div class="h5">On 26 November 2015 at 11:37, Albert Freeman <<a href="mailto:albertwdfreeman@gmail.com">albertwdfreeman@gmail.com</a>> wrote: > On 25 November 2015 at 22:45, Ken Martin <<a href="mailto:ken.martin@kitware.com">ken.martin@kitware.com</a>> wrote: >> >> Noob question incoming... I have an application that requests a 3.2 core >> context from Mesa. I tell folks to make sure they have mesa version 10.6.5 >> or later which I thought supported OpenGL 3.2. Usually this works but now >> and then I get users who's Mesa (including version 11) fails to provide a >> 3.2 Core context. I tell them to set >> >> MESA_GL_VERSION_OVERRIDE=3.2 >> >> and >> >> MESA_GLSL_VERSION_OVERRIDE=150 (or something like that) >> >> and it generally works. But I'm not sure why the original request for 3.2 >> Core is failing on some systems (drivers?). Looking at >> >> <a href="http://mesamatrix.net/" rel="noreferrer" target="_blank">http://mesamatrix.net/</a> >> >> leads me to think that all drivers with a recent mesa should be fine with >> 3.2 Core but obviously I am missing something. Do I need to be telling them >> to use a specific driver? Is there a list of drivers that do not support 3.2 >> I should tell them to avoid? Anything else come to mind? >> >> I just want to try to provide a bit more help to folks to get them up and >> running with Mesa and even better get our code to handle it automatically if >> we could. >> >> Any pointers appreciated. The application is vtk. >> >> Thanks >> Ken >> >> >> >> >> >> >> >> -- >> Ken Martin PhD >> Chairman & CFO >> Kitware Inc. >> 28 Corporate Drive >> Clifton Park NY 12065 >> <a href="tel:518%20371%203971" value="+15183713971">518 371 3971</a> >> >> This communication, including all attachments, contains confidential and >> legally privileged information, and it is intended only for the use of the >> addressee. Access to this email by anyone else is unauthorized. If you are >> not the intended recipient, any disclosure, copying, distribution or any >> action taken in reliance on it is prohibited and may be unlawful. If you >> received this communication in error please notify us immediately and >> destroy the original message. Thank you. >> >> _______________________________________________ >> mesa-users mailing list >> <a href="mailto:mesa-users@lists.freedesktop.org">mesa-users@lists.freedesktop.org</a> >> <a href="http://lists.freedesktop.org/mailman/listinfo/mesa-users" rel="noreferrer" target="_blank">http://lists.freedesktop.org/mailman/listinfo/mesa-users</a> >> > Not all mesa drivers support gl 3.2, e.g. the r300 gallium driver in > the git mesa supports only glsl 1.20: > case PIPE_CAP_GLSL_FEATURE_LEVEL: > return 120; > > That website is based on gl3.txt. It does not list all drivers mesa > supports (as gl3.txt dosen't). They are both only meant to be a rough > guide. The svga driver apparently supports gl 3.3 and it isn't even > mentioned in gl3.txt. So I think some of the vtk users have really old > gpus that don't support gl 3.2. Some gl versions already have software > emulated components for gl features not supported by the hardware on > older gpus and some older gpus simply don't have support. </div></div>As those environment variables you use simply fake the gl version to the application. If the application then uses say a gl 3.2 feature that isn't supported by that driver, the behavior is undefined (e.g. application can crash). <div class="HOEnZb"><div class="h5">_______________________________________________ mesa-users mailing list <a href="mailto:mesa-users@lists.freedesktop.org">mesa-users@lists.freedesktop.org</a> <a href="http://lists.freedesktop.org/mailman/listinfo/mesa-users" rel="noreferrer" target="_blank">http://lists.freedesktop.org/mailman/listinfo/mesa-users</a> </div></div></blockquote></div> </div>