[gd_resource type="Shader" format=2]

[resource]

code = "shader_type canvas_item;

uniform float scale = 8.0;

uniform vec2 offset;

// Precompute values for skewed triangular grid

uniform vec4 C = vec4(0.211324865405187, // (3.0-sqrt(3.0))/6.0

0.366025403784439, // 0.5*(sqrt(3.0)-1.0)

-0.577350269189626,// -1.0 2.0 * C.x

0.024390243902439);// 1.0 / 41.0

vec3 permute(vec3 x) { return mod(((x*34.0) 1.0)*x, 289.0); }

float snoise(vec2 v){

vec2 i = floor(v dot(v, C.yy) );

vec2 x0 = v - i dot(i, C.xx);

vec2 i1;

i1 = (x0.x > x0.y) ? vec2(1.0, 0.0) : vec2(0.0, 1.0);

vec4 x12 = vec4(x0,x0) C.xxzz;

x12.xy -= i1;

i = mod(i, 289.0);

vec3 p = permute(permute(i.y vec3(0.0, i1.y, 1.0)) i.x vec3(0.0, i1.x, 1.0 ));

vec3 m = max(0.5 - vec3(dot(x0,x0), dot(x12.xy,x12.xy), dot(x12.zw,x12.zw)), vec3(0.0));

m = m*m ;

m = m*m ;

vec3 x = 2.0 * fract(p * C.www) - 1.0;

vec3 h = abs(x) - 0.5;

vec3 ox = floor(x 0.5);

vec3 a0 = x - ox;

m *= 1.79284291400159 - 0.85373472095314 * (a0*a0 h*h);

vec3 g;

g.x = a0.x * x0.x h.x * x0.y;

g.yz = a0.yz * x12.xz h.yz * x12.yw;

return dot(m, g) * 66.0 0.5;

//return 130.0 * dot(m, g);

}

void fragment() {

vec2 st = UV.xy;

st = offset;

st *= scale;

vec3 color = vec3(0.0);

color = vec3(clamp(snoise(st),0.0,1.0));

COLOR.rgb = color;

}"