@babylonjs/core/Shaders/noise.fragment.js

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// Do not edit.
import { ShaderStore } from "../Engines/shaderStore.js";
const name = "noisePixelShader";
const shader = `uniform float brightness;uniform float persistence;uniform float timeScale;varying vec2 vUV;vec2 hash22(vec2 p)
{p=p*mat2(127.1,311.7,269.5,183.3);p=-1.0+2.0*fract(sin(p)*43758.5453123);return sin(p*6.283+timeScale);}
float interpolationNoise(vec2 p)
{vec2 pi=floor(p);vec2 pf=p-pi;vec2 w=pf*pf*(3.-2.*pf);float f00=dot(hash22(pi+vec2(.0,.0)),pf-vec2(.0,.0));float f01=dot(hash22(pi+vec2(.0,1.)),pf-vec2(.0,1.));float f10=dot(hash22(pi+vec2(1.0,0.)),pf-vec2(1.0,0.));float f11=dot(hash22(pi+vec2(1.0,1.)),pf-vec2(1.0,1.));float xm1=mix(f00,f10,w.x);float xm2=mix(f01,f11,w.x);float ym=mix(xm1,xm2,w.y); 
return ym;}
float perlinNoise2D(float x,float y)
{float sum=0.0;float frequency=0.0;float amplitude=0.0;for(int i=0; i<OCTAVES; i++)
{frequency=pow(2.0,float(i));amplitude=pow(persistence,float(i));sum=sum+interpolationNoise(vec2(x*frequency,y*frequency))*amplitude;}
return sum;}
#define CUSTOM_FRAGMENT_DEFINITIONS
void main(void)
{float x=abs(vUV.x);float y=abs(vUV.y);float noise=brightness+(1.0-brightness)*perlinNoise2D(x,y);gl_FragColor=vec4(noise,noise,noise,1.0);}
`;
// Sideeffect
if (!ShaderStore.ShadersStore[name]) {
    ShaderStore.ShadersStore[name] = shader;
}
/** @internal */
export const noisePixelShader = { name, shader };
//# sourceMappingURL=noise.fragment.js.map