+ if (out_count > 0)
+ result = vi_out[0].visual;
+
+ if (vi_out)
+ XFree ((char *) vi_out);
+
+ if (!result && screen_depth > 24)
+ {
+ /* If it's a 32-deep screen and we didn't find a depth-16 visual,
+ see if there's a depth-12 visual. */
+ vi_in.class = TrueColor;
+ vi_in.screen = screen_number (screen);
+ vi_in.depth = 12;
+ vi_out = XGetVisualInfo (dpy, (VisualClassMask | VisualScreenMask |
+ VisualDepthMask),
+ &vi_in, &out_count);
+ if (out_count > 0)
+ result = vi_out[0].visual;
+ }
+
+ if (!result)
+ /* No half-depth TrueColor? Ok, try for any TrueColor (the deepest.) */
+ result = pick_best_visual_of_class (screen, TrueColor);
+
+ if (!result)
+ /* No TrueColor? Ok, try for anything. */
+ result = pick_best_visual (screen, False, False);
+
+ return result;
+}
+
+
+static XVisualInfo *
+visual_info_id (Screen *screen, int id)
+{
+ Display *dpy = DisplayOfScreen (screen);
+ XVisualInfo vi_in;
+ int out_count;
+ vi_in.screen = screen_number (screen);
+ vi_in.visualid = id;
+ return XGetVisualInfo (dpy, VisualScreenMask | VisualIDMask,
+ &vi_in, &out_count);
+}
+
+static XVisualInfo *
+visual_info (Screen *screen, Visual *visual)
+{
+ XVisualInfo *vi_out = visual_info_id (screen, XVisualIDFromVisual (visual));
+ if (! vi_out) abort ();
+ return vi_out;
+}
+
+Visual *
+id_to_visual (Screen *screen, int id)
+{
+ XVisualInfo *vi_out = visual_info_id (screen, id);