Index: client/gui-gtk/gtkpixcomm.c
===================================================================
RCS file: /home/freeciv/CVS/freeciv/client/gui-gtk/gtkpixcomm.c,v
retrieving revision 1.8
diff -u -u -r1.8 gtkpixcomm.c
--- client/gui-gtk/gtkpixcomm.c	2002/12/03 17:53:59	1.8
+++ client/gui-gtk/gtkpixcomm.c	2002/12/13 09:16:38
@@ -37,6 +37,9 @@
 #include <config.h>
 #endif
 
+#include "log.h"
+#include "timing.h"
+
 #include "gtkpixcomm.h"
 
 static void gtk_pixcomm_class_init (GtkPixcommClass *cclass);
@@ -197,6 +200,9 @@
 gtk_pixcomm_copyto (GtkPixcomm *pixcomm, SPRITE *src,
 			gint x, gint y, gboolean refresh)
 {
+    struct timer *t;
+    int i;
+
   g_return_if_fail (pixcomm != NULL);
   g_return_if_fail (GTK_IS_PIXCOMM (pixcomm));
   g_return_if_fail (src != NULL);
@@ -209,6 +215,37 @@
 
   gdk_draw_pixmap (pixcomm->pixmap, pixcomm->fg_gc, src->pixmap,
 		   0, 0, x, y, src->width, src->height);
+#define N 10000
+
+  if (src->has_mask) {
+    double mask, mask2, nomask;
+
+    t = new_timer_start(TIMER_USER, TIMER_ACTIVE);
+    for (i = 0; i < N; i++) {
+      gdk_draw_pixmap(pixcomm->pixmap, pixcomm->fg_gc, src->pixmap,
+		      0, 0, x, y, src->width, src->height);
+    }
+    mask = read_timer_seconds_free(t);
+
+    t = new_timer_start(TIMER_USER, TIMER_ACTIVE);
+    for (i = 0; i < N; i++) {
+      gdk_draw_pixmap(pixcomm->pixmap, pixcomm->fg_gc, src->pixmap,
+		      0, 0, x, y, src->width, src->height);
+    }
+    mask2 = read_timer_seconds_free(t);
+
+    gdk_gc_set_clip_mask(pixcomm->fg_gc, NULL);
+    t = new_timer_start(TIMER_USER, TIMER_ACTIVE);
+    for (i = 0; i < N; i++) {
+      gdk_draw_pixmap(pixcomm->pixmap, pixcomm->fg_gc, src->pixmap,
+		      0, 0, x, y, src->width, src->height);
+    }
+    nomask = read_timer_seconds_free(t);
+    freelog(LOG_NORMAL,
+	    "gdk_draw_pixmap of %dx%d: mask=%fs/%fs (%f) nomask=%fs factor=%f",
+	    src->width, src->height, mask, mask2, mask / mask2, nomask,
+	    mask / nomask);
+  }
 
   if (src->has_mask)
   {