From: Toni Wilen <twilen@winuae.net>
Date: Thu, 2 Dec 2021 18:24:31 +0000 (+0200)
Subject: Horizontal overscan blanking backwards compatibility fix.
X-Git-Tag: 4900~4
X-Git-Url: https://git.unchartedbackwaters.co.uk/w/?a=commitdiff_plain;h=2d72a6941e9d20e2ae6ae333838cfee896c505bd;p=francis%2Fwinuae.git

Horizontal overscan blanking backwards compatibility fix.
---

diff --git a/drawing.cpp b/drawing.cpp
index 45118b71..4aaef18b 100644
--- a/drawing.cpp
+++ b/drawing.cpp
@@ -669,6 +669,10 @@ void check_custom_limits(void)
 	int top = fd->gfx_filter_top_border < 0 ? 0 : fd->gfx_filter_top_border;
 	int bottom = fd->gfx_filter_bottom_border < 0 ? 0 : fd->gfx_filter_bottom_border;
 
+	// backwards compatibility, old 0x38 start is gone.
+	left += (0x38 * 4) >> (RES_MAX - currprefs.gfx_resolution);
+	right += (0x38 * 4) >> (RES_MAX - currprefs.gfx_resolution);
+
 	if (left > visible_left_start)
 		visible_left_start = left;
 	if (right > left && right < visible_right_stop)