diff --git a/init.lua b/init.lua
index f2a466f..f927d3c 100644
--- a/init.lua
+++ b/init.lua
@@ -52,6 +52,10 @@ local get_fog = function( distance )
    return clamp( math.pow ( distance / 128, 2 ), 0, 1 )
 end
 
+local step = function( value, steps )
+   return math.floor( ( value - math.floor(value) ) * steps ) / steps
+end
+
 local shade = function( origin, target, background_color, liquids )
 	local ray = minetest.raycast( origin, target, false, liquids )
 	local color, hit_water
@@ -69,7 +73,21 @@ local shade = function( origin, target, background_color, liquids )
 				pointed_thing.intersection_normal.y * 3 +
 				pointed_thing.intersection_normal.z * 1
 			) / 12
-			local l_color = math.min( base_color * n * light, 255 )
+			local point = pointed_thing.intersection_point
+			local x = step( point.x, 8 )
+			local y = step( point.y, 8 )
+			local z = step( point.z, 8 )
+			local noise = math.floor(
+				(
+					( math.sin(x) * math.tan(z) ) * 65497 +
+					( math.sin(y) * math.tan(x) ) * 65519 +
+					( math.sin(z) * math.tan(y) ) * 65521
+				) / 3
+			) % 16
+			local l_color = math.min(
+				( base_color + noise ) * n * light,
+				255
+			)
 			color = math.floor(
 				l_color * ( 1 - fog ) +
 				background_color * fog