From 175ab359719a414c343b76c4166e9f813bcbfcaf Mon Sep 17 00:00:00 2001
From: Sergey Lipskiy <gonetz@ngs.ru>
Date: Mon, 12 Sep 2016 21:27:38 +0700
Subject: [PATCH] VI_UpdateSize() : correct width/height calculation in
 interlaced mode. Still hackish.

Fixed Star Wars Episode One Racer Flicker and Black Screen with Frame Buffer Emulation #1119
Fixed Top Gear Overdrive black screen #1122
---
 src/VI.cpp | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/VI.cpp b/src/VI.cpp
index 1b732c34..78a4b728 100644
--- a/src/VI.cpp
+++ b/src/VI.cpp
@@ -39,9 +39,10 @@ void VI_UpdateSize()
 	VI.width = *REG.VI_WIDTH;
 	VI.interlaced = (*REG.VI_STATUS & 0x40) != 0;
 
-	const bool bCFB = (gDP.changed&CHANGED_CPU_FB_WRITE) == CHANGED_CPU_FB_WRITE;
-	if (VI.interlaced && !bCFB) {
-		f32 fullWidth = 640.0f*xScale;
+	if (VI.interlaced) {
+		f32 fullWidth = 640.0f;
+		if ((*REG.VI_X_SCALE) % 512 == 0)
+			fullWidth *= xScale;
 		if (*REG.VI_WIDTH > fullWidth) {
 			const u32 scale = (u32)floorf(*REG.VI_WIDTH / fullWidth + 0.5f);
 			VI.width /= scale;