Include a bumpMap/specularMap in custom shader

Questions
,
4

The link appears to be missing, was this issue ever solved? because I’m also trying to add a bump map to a shader material with no luck, I’ve posted a question here
Adding a bumpMap to a shadermaterial - Questions - three.js forum (threejs.org) any response would be appreciated.

edit: here’s how I’ve tried to implement the bumpMap to the shadermaterial:

fragmentShader: `
              uniform sampler2D globeTexture;
              uniform sampler2D bumpMap;
              uniform sampler2D bumpScale;
              uniform sampler2D specularMap;
              uniform sampler2D specular;
              uniform sampler2D shininess; 
              varying vec2 vertexUV;
              varying vec3 vertexNormal;
               void main() {
               float intensity = 1.05 - dot(
               vertexNormal, vec3(0, 0, 1.0));
               vec3 atmosphere = (vec3(0.3, 0.6, 1.0))
               * pow(intensity, 1.5);
                  gl_FragColor = vec4(atmosphere +texture2D(globeTexture, vertexUV).xyz, 1.0),
                   vec4(atmosphere +texture2D(bumpMap, vertexUV).xyz, 2.0);                                  
               }
              `,

 uniforms: {


	  
		/*"color": { value: new THREE.Color( 0xffffff ) },
		"diffuse": { value: new THREE.Color( 0xffffff ) },*/
		"specular": { value: new THREE.Color("grey")},
		/*"emissive": { value: new THREE.Color( 0x000000 ) },
		"opacity": { value: 1 },*/
		"shininess": { value: 15 },
                "bumpMap": {
                  value: new THREE.TextureLoader().load("//unpkg.com/three-globe/example/img/earth-topology.png")
                  },
                  
                  "bumpScale": {
                value: 10
                },
                  
              
                "specularMap": {
                  value: new THREE.TextureLoader().load(
  "//unpkg.com/three-globe/example/img/earth-water.png")
  
                  },
                "globeTexture": {
                  value: myTexture[parameters.Theme]
                  }
                  /*bump: {
                    value: new THREE.TextureLoader().load("//unpkg.com/three-globe/example/img/earth-topology.png")
                    }*/
                },
        });

heres a editable link to my code: Glitch :･ﾟ✧