From 23ab03ec915c49d143d0efecf68f904e5667cb41 Mon Sep 17 00:00:00 2001
From: David Rose <david@ddrose.com>
Date: Sat, 12 Sep 2009 01:48:40 +0000
Subject: [PATCH] issue with XClearArea and 0-width areas

---
 direct/src/plugin/p3dX11SplashWindow.cxx | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/direct/src/plugin/p3dX11SplashWindow.cxx b/direct/src/plugin/p3dX11SplashWindow.cxx
index ddd6c6baac..ec3428db46 100755
--- a/direct/src/plugin/p3dX11SplashWindow.cxx
+++ b/direct/src/plugin/p3dX11SplashWindow.cxx
@@ -722,10 +722,18 @@ redraw() {
 
     // Then clear the rectangles around it carefully (rather than just
     // clearing the whole window first, to avoid flicking).
-    XClearArea(_display, _window, 0, 0, _win_width, yo, False);
-    XClearArea(_display, _window, 0, yo, xo, _composite_height, False);
-    XClearArea(_display, _window, _win_width - xo, yo, xo, _composite_height, False);
-    XClearArea(_display, _window, 0, _win_height - yo, _win_width, yo, False);
+    if (yo != 0 && _win_width != 0) {
+      // Top
+      XClearArea(_display, _window, 0, 0, _win_width, yo, False);
+      // Bottom
+      XClearArea(_display, _window, 0, _win_height - yo, _win_width, yo, False);
+    }
+    if (xo != 0 && _composite_height != 0) {
+      // Left
+      XClearArea(_display, _window, 0, yo, xo, _composite_height, False);
+      // Right
+      XClearArea(_display, _window, _win_width - xo, yo, xo, _composite_height, False);
+    }
   }
 }