From cf28556d6d2f3e64ccbd4b185f42b3eadaa247c8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Henrik=20Rydg=C3=A5rd?= <hrydgard@gmail.com>
Date: Wed, 5 Apr 2023 09:48:28 +0200
Subject: [PATCH] When integer scaling, take the internal render resolution
 into account.

---
 GPU/Common/PresentationCommon.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/GPU/Common/PresentationCommon.cpp b/GPU/Common/PresentationCommon.cpp
index 4d2e2fa2d2..b3b8a436d9 100644
--- a/GPU/Common/PresentationCommon.cpp
+++ b/GPU/Common/PresentationCommon.cpp
@@ -127,6 +127,9 @@ void CalculateDisplayOutputRect(FRect *rc, float origW, float origH, const FRect
 		if (rotated) {
 			wDim = 272.0f;
 		}
+		// If integer scaling, limit ourselves to even multiples of the rendered resolution,
+		// to make sure all the pixels are square.
+		wDim *= g_Config.iInternalResolution;
 		outW = std::max(1.0f, floorf(outW / wDim)) * wDim;
 		outH = outW / origRatio;
 	}