text: const vertex = `
  precision highp float;
  precision highp int;
  
  attribute vec2 uv;
  attribute vec3 position;
  attribute vec3 normal;
  
  varying vec2 vUv;
  
  void main() {
      vUv = uv;
      
      gl_Position = vec4(position * 2.0, 1.0);
  }
  `;
  
  const fragment = `
  precision highp float;
  precision highp int;
  
  uniform sampler2D tMap;
  
  varying vec2 vUv;
  
  void main() {
      gl_FragColor.rgb = texture2D(tMap, vUv).rgb;
      gl_FragColor.a = 1.0;
  }
  `;
  
  export default {vertex, fragment};