PImage textureImage;

void setupTexture() {
  // textureImage = loadImage("chlorArcticaeTexture_Grida.png"); 
  //textureImage = createImage(1025,1025, RGB); 
  textureImage = createImage(256,256, RGB); 
  for(int i=0; i < textureImage.pixels.length; i++) {

    textureImage.pixels[i] = color(222, 222, 255); 

  }
}

PImage renderTexture() {


  for(int i=round(textureImage.pixels.length*.5); i < textureImage.pixels.length; i++) {

    //   float m = millis();

    // if (random(1000)>=999) {
    float pr = red(textureImage.pixels[i]);
    float pg = green(textureImage.pixels[i]);
    float pb = blue(textureImage.pixels[i]);

    int v = round(random(10)-5);

    float r = pr+round(random(20)-10);
    if(r<0) r=0; if (r>64) r=64;

    float g = pg+round(random(20)-10);
    if(g<0) g=128; if (g>255) g=255;

    float b = pb+round(random(20)-10);
    if(b<0) b=0; if (b>64) b=64;

    textureImage.pixels[i] = color(r, g, b); 
    //}
  }

  textureImage.updatePixels();

  return textureImage;

}