+/**
+ * Return the depth of a drawable.
+ *
+ * Unlike other drawable functions, the drawable needs not be a DRI2 drawable.
+ */
+uint
+x11_drawable_get_depth(struct x11_screen *xscr, Drawable drawable)
+{
+ unsigned int depth;
+
+ if (drawable != xscr->last_drawable) {
+ Window root;
+ int x, y;
+ unsigned int w, h, border;
+ Status ok;
+
+ ok = XGetGeometry(xscr->dpy, drawable, &root,
+ &x, &y, &w, &h, &border, &depth);
+ if (!ok)
+ depth = 0;
+
+ xscr->last_drawable = drawable;
+ xscr->last_depth = depth;
+ }
+ else {
+ depth = xscr->last_depth;
+ }
+
+ return depth;
+}
+
+#ifdef GLX_DIRECT_RENDERING
+