From 079157f20124cb4277e08265d27a5a714aba7ce5 Mon Sep 17 00:00:00 2001
From: lisyarus <lisyarus@gmail.com>
Date: Thu, 30 Jun 2022 23:08:44 +0300
Subject: [PATCH] Fix pcg::lazy_perlin normalization

---
 libs/pcg/include/psemek/pcg/lazy_perlin.hpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libs/pcg/include/psemek/pcg/lazy_perlin.hpp b/libs/pcg/include/psemek/pcg/lazy_perlin.hpp
index dd228c19..0413ef13 100644
--- a/libs/pcg/include/psemek/pcg/lazy_perlin.hpp
+++ b/libs/pcg/include/psemek/pcg/lazy_perlin.hpp
@@ -53,7 +53,8 @@ namespace psemek::pcg
 					values[mask] = smootherstep(values[mask], values[mask | (1 << i)], t[i]);
 			}
 
-			return 0.5 * (1. + std::sqrt(2.) * values[0]);
+			static auto const max = std::sqrt(T(N) / T(4));
+			return 0.5 * (1. + values[0] / max);
 		}
 
 	}