On 2019-02-11 5:18 p.m., Andy Ritger wrote: > On Mon, Feb 11, 2019 at 12:09:26PM +0100, Michel Dänzer wrote: >> On 2019-02-08 11:43 p.m., Kyle Brenneman wrote: >>> >>> Also, is Mesa the only client-side vendor library that works with the >>> Xorg GLX module? I vaguely remember that there was at least one other >>> driver that did, but I don't remember the details anymore. >> >> AFAIK, the amdgpu-pro OpenGL driver can work with the Xorg GLX module >> (or its own forked version of it). > > Maybe the amdgpu-pro OpenGL driver uses a fork of the Xorg GLX module > (or sets the "GlxVendorLibrary" X configuration option?), but it doesn't > look to me like the in-tree Xorg GLX module could report anything other > than "mesa" for GLX_VENDOR_NAMES_EXT, without custom user configuration. > > GLX_VENDOR_NAMES_EXT, which client-side glvnd uses to pick the > libGLX_${vendor}.so to load, is implemented in the Xorg GLX module > with this: > > xserver/glx/glxcmds.c:__glXDisp_QueryServerString(): > > case GLX_VENDOR_NAMES_EXT: > if (pGlxScreen->glvnd) { > ptr = pGlxScreen->glvnd; > break; > } > > pGlxScreen->glvnd appears to be assigned here, defaulting to "mesa", > though allowing an xorg.conf override via the "GlxVendorLibrary" option: > > xserver/glx/glxdri2.c:__glXDRIscreenProbe(): > > xf86ProcessOptions(pScrn->scrnIndex, pScrn->options, options); > glvnd = xf86GetOptValString(options, GLXOPT_VENDOR_LIBRARY); > if (glvnd) > screen->base.glvnd = xnfstrdup(glvnd); > free(options); > > if (!screen->base.glvnd) > screen->base.glvnd = strdup("mesa"); > > And swrast unconditionally sets pGlxScreen->glvnd to "mesa": > > xserver/glx/glxdriswrast.c:__glXDRIscreenProbe(): > > screen->base.glvnd = strdup("mesa"); > > Is there more to this that I'm missing?
I don't think so, I suspect we were just assuming slightly different definitions of "works". :) -- Earthling Michel Dänzer | http://www.amd.com Libre software enthusiast | Mesa and X developer _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/mesa-dev