On 30/03/15 07:10, Zhang, Xiong Y wrote: > Hi, Emil: >>> On 25 March 2015 at 08:05, Xiong Zhang <xiong.y.zh...@intel.com> wrote: >>>> GLX_ARB_create_context spec says: >>>> If either <draw> or <read> are not a valid GLX drawable, a >>>> GLXBadDrawable error is generated, unless <draw> and <read> are both >>>> None and the OpenGL version supported by <ctx> is 3.0 or greater. >>>> >>>> So when both <draw> and <read> are None, it could pass NULL drawable >>>> into driver instead of returing GLXBadDrawable. >>>> >>> I'm a bit fresh in the area, but where do we check that the OpenGL >>> version supported is 3.0 or greater ? Is there an assumption that all >>> dri2/3 modules support it ? >> >> [Zhang, Xiong Y] the patch lack of checking of OpenGL version >= 3.0, I will >> add it. > > [Zhang, Xiong Y] Since GL version is determined by dri drivers like i965, > swrast, how could I get GL version in glx code ? > Could you give me an extension example that how to implement gl version check > in glx / egl code ? > Afaict there isn't an (easy) way of doing so. I can think of a couple of ways 1) get libGL to sniff/cache information for the glx_context or 2) add a DRI extension, but I'm not sure if either one is a good idea.
Perhaps some of the old-timers in the area can share some insight :-) Kristian, Ian What would be the better way to retrieve the OpenGL version supported at bind_context time ? Cheers, Emil _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
