From b77a0eb7cf9eab87aa9abfa3b7789af7c8a67571 Mon Sep 17 00:00:00 2001
From: Christoph Oelckers <coelckers@users.noreply.github.com>
Date: Wed, 1 Feb 2017 11:44:13 +0100
Subject: [PATCH] - let D_PageDrawer always clear the background.

The math in DCanvas::FillBorder does not always work out so better clean the entire screen before drawing a fullscreen image to ensure that the menu blend is always drawn over something valid.
---
 src/d_main.cpp | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/d_main.cpp b/src/d_main.cpp
index e0676b751..9a966e6d5 100644
--- a/src/d_main.cpp
+++ b/src/d_main.cpp
@@ -1062,6 +1062,7 @@ void D_PageTicker (void)
 
 void D_PageDrawer (void)
 {
+	screen->Clear(0, 0, SCREENWIDTH, SCREENHEIGHT, 0, 0);
 	if (Page != NULL)
 	{
 		screen->DrawTexture (Page, 0, 0,
@@ -1069,11 +1070,9 @@ void D_PageDrawer (void)
 			DTA_Masked, false,
 			DTA_BilinearFilter, true,
 			TAG_DONE);
-		screen->FillBorder (NULL);
 	}
 	else
 	{
-		screen->Clear (0, 0, SCREENWIDTH, SCREENHEIGHT, 0, 0);
 		if (!PageBlank)
 		{
 			screen->DrawText (SmallFont, CR_WHITE, 0, 0, "Page graphic goes here", TAG_DONE);