From ccc7382ab969fa69e4fe66a84b22705ae17c7eaf Mon Sep 17 00:00:00 2001
From: Peter Wortmann <Peter.Wortmann@googlemail.com>
Date: Sun, 15 Mar 2015 22:41:58 +0100
Subject: [PATCH] Another eta, this time for the fade cross check

This was behind the rare "white dots" issues. Boy, floating point numbers
are fiddly to work with - corner cases everywhere.
---
 src/landscape/fow/C4FoWLightSection.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/landscape/fow/C4FoWLightSection.cpp b/src/landscape/fow/C4FoWLightSection.cpp
index ec9e16f62..898e7b299 100644
--- a/src/landscape/fow/C4FoWLightSection.cpp
+++ b/src/landscape/fow/C4FoWLightSection.cpp
@@ -781,8 +781,9 @@ std::list<C4FoWBeamTriangle> C4FoWLightSection::CalculateTriangles(C4FoWRegion *
 		tri.fadeRY = tri.fanRY + d * dy;
 
 		// Do the fades cross?
+		const double fadeCrossEta = 0.01
 		if ((tri.fadeRX - lightRX) / (tri.fadeRY - lightRY)
-			< (tri.fadeLX - lightRX) / (tri.fadeLY - lightRY))
+			< (tri.fadeLX - lightRX) / (tri.fadeLY - lightRY) + fadeCrossEta)
 		{
 			// Average it
 			tri.fadeLX = tri.fadeRX = (tri.fadeLX + tri.fadeRX) / 2;