Updated BnW shader

game/shaders/black_n_white.gdshader

@@ -4,34 +4,29 @@ uniform vec4 black_color : source_color = vec4(0.0, 0.0, 0.0, 1.0);
 uniform vec4 white_color : source_color = vec4(1.0, 1.0, 1.0, 1.0);
 uniform bool switch_colors = false;
 uniform float threshold : hint_range(0.0, 1.0) = 0.5;
-uniform float speed : hint_range(0.0, 10.0) = 5.0;
+uniform float speed : hint_range(0.0, 10.0) = 0.5;
 uniform float intensity : hint_range(0.0, 1.0) = 1.0;
 uniform float scale : hint_range(0.0, 100.0) = 20.0;
 
-float rand(vec2 coord) {
-	return fract(sin(dot(coord, vec2(12.9898, 78.233))) * 43758.5453);
+vec2 random(vec2 uv){
+    uv = vec2( dot(uv, vec2(127.1,311.7) ),
+               dot(uv, vec2(269.5,183.3) ) );
+    return -1.0 + 2.0 * fract(sin(uv) * 43758.5453123);
 }
 
-float cellular(vec2 coord) {
-	vec2 i = floor(coord);
-	vec2 f = fract(coord);
+float noise(vec2 uv) {
+    vec2 uv_index = floor(uv);
+    vec2 uv_fract = fract(uv);
 
-	float min_dist = 1.0;
+    vec2 blur = smoothstep(0.0, 1.0, uv_fract);
 
-	for (int y = -1; y <= 1; y++) {
-		for (int x = -1; x <= 1; x++) {
-			vec2 neighbor = vec2(float(x), float(y));
-			vec2 point = vec2(rand(i + neighbor), rand(i + neighbor + vec2(1000.0)));
-			point = 0.5 * sin(TIME * speed + 6.2831 * point);
-			vec2 diff = neighbor + point - f;
-			float dist = length(diff);
-			min_dist = min(min_dist, dist);
-		}
-	}
-
-	return min_dist;
+    return mix( mix( dot( random(uv_index + vec2(0.0,0.0) ), uv_fract - vec2(0.0,0.0) ),
+                     dot( random(uv_index + vec2(1.0,0.0) ), uv_fract - vec2(1.0,0.0) ), blur.x),
+                mix( dot( random(uv_index + vec2(0.0,1.0) ), uv_fract - vec2(0.0,1.0) ),
+                     dot( random(uv_index + vec2(1.0,1.0) ), uv_fract - vec2(1.0,1.0) ), blur.x), blur.y) + 0.5;
 }
 
+
 void fragment() {
 	if (COLOR.a > 0.01) {
 		float l = dot(COLOR.rgb, vec3(0.2126, 0.7152, 0.0722));
@@ -41,8 +36,8 @@ void fragment() {
 			is_black = !is_black;
 		}
 		if (intensity < 1.0) {
-			vec2 coord = UV * scale;
-			if (cellular(coord) > intensity) {
+			vec2 coord = UV * scale + TIME * speed;
+			if (noise(coord) > intensity) {
 				is_black = !is_black;
 			}
 		}