From d1e5daedf091af1a3fc5631b7834c921b6d69d9b Mon Sep 17 00:00:00 2001
From: Eric Wasylishen <ewasylishen@gmail.com>
Date: Sat, 8 Apr 2023 23:36:09 -0600
Subject: [PATCH] light: fix lighting output change in last commit

if the center of a surface light fragment was exactly coplanar with a wall, the last commit would reject it
whereas previously, we would still emit light
---
 light/surflight.cc | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/light/surflight.cc b/light/surflight.cc
index e6b44438..f6d16bc0 100644
--- a/light/surflight.cc
+++ b/light/surflight.cc
@@ -84,10 +84,13 @@ static void MakeSurfaceLight(const mbsp_t *bsp, const settings::worldspawn_keys
         qvec3f point = w.center() + facenormal;
 
         // optimization - cull surface lights in the void
-        if (Light_PointInWorld(bsp, point))
+        // also try to move them if they're slightly inside a wall
+        auto [fixed_point, success] = FixLightOnFace(bsp, point, false, 0.5f);
+        if (!success) {
             return;
+        }
 
-        points.push_back(point);
+        points.push_back(fixed_point);
     });
 
     // Calculate emit color and intensity...