From 87d20cc2a16ee9b4878d28a586bd91d8fe6b73ca Mon Sep 17 00:00:00 2001
From: schellingb <14200249+schellingb@users.noreply.github.com>
Date: Thu, 17 Oct 2024 22:07:57 +0900
Subject: [PATCH] Simplify calculation

---
 dosbox_pure_libretro.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dosbox_pure_libretro.cpp b/dosbox_pure_libretro.cpp
index 1efade00..7524255e 100644
--- a/dosbox_pure_libretro.cpp
+++ b/dosbox_pure_libretro.cpp
@@ -2035,7 +2035,7 @@ void GFX_EndUpdate(const Bit16u *changedLines)
 			else if (!dblh) for (; src != srcEnd; trg -= 2) trg[0] = trg[1] = *(--src);
 			else            for (; src != srcEnd; trg -= 2) trg[0] = trg[1] = trg[pitch] = trg[pitch+1] = *(--src);
 		}
-		buf.ratio = ((float)render.src.width * ((float)render.src.dblw+1.f)) / ((float)render.src.height * ((float)render.src.dblh+1.0f) * (float)render.src.ratio);
+		buf.ratio = (srcw << dblw) / ((srch << dblh) * (float)render.src.ratio);
 	}
 	else
 	{