From 21d9fe23d75b68807e6692de071efa0818a9a7bb Mon Sep 17 00:00:00 2001
From: Stefan Gustavson <stefan.gustavson@gmail.com>
Date: Wed, 14 Oct 2020 09:55:56 +0200
Subject: [PATCH] Bug fix

Fixed an age-old bug that caused slight discontinuities along simplex boundaries.
---
 src/noise3D.glsl | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/noise3D.glsl b/src/noise3D.glsl
index c9dace9..bff4e65 100644
--- a/src/noise3D.glsl
+++ b/src/noise3D.glsl
@@ -96,8 +96,8 @@ float snoise(vec3 v)
   p3 *= norm.w;
 
 // Mix final noise value
-  vec4 m = max(0.6 - vec4(dot(x0,x0), dot(x1,x1), dot(x2,x2), dot(x3,x3)), 0.0);
+  vec4 m = max(0.5 - vec4(dot(x0,x0), dot(x1,x1), dot(x2,x2), dot(x3,x3)), 0.0);
   m = m * m;
-  return 42.0 * dot( m*m, vec4( dot(p0,x0), dot(p1,x1), 
+  return 106.0 * dot( m*m, vec4( dot(p0,x0), dot(p1,x1), 
                                 dot(p2,x2), dot(p3,x3) ) );
   }