backend-glx: Fix glXQueryVersion test

This fixes some backwards logic for asserting that we have a GLX major
version == 1 and a minor version >= 2. (NB: Although we technically
depend on GLX 1.3 features, we still have to support drivers that report
GLX 1.2 because there are a lot of mesa drivers out there incorrectly
report GLX 1.2 even though they export extensions that depend on GLX
1.3)

diff --git a/clutter/glx/clutter-backend-glx.c b/clutter/glx/clutter-backend-glx.c
index fb5c8c0..844cd2e 100644 (file)
--- a/clutter/glx/clutter-backend-glx.c
+++ b/clutter/glx/clutter-backend-glx.c
@@ -154,7 +154,7 @@ clutter_backend_glx_post_parse (ClutterBackend  *backend,
    * time Mesa has exported a hybrid GLX, exporting extensions specified
    * to require GLX 1.3, but still reporting 1.2 via glXQueryVersion. */
   if (!glXQueryVersion (backend_x11->xdpy, &glx_major, &glx_minor)
-      || !(glx_major > 1 || glx_minor > 2))
+      || !(glx_major == 1 && glx_minor >= 2))
     {
       g_set_error (error, CLUTTER_INIT_ERROR,
                    CLUTTER_INIT_ERROR_BACKEND,