text: // deno-fmt-ignore-file
  /// <reference lib="dom" />
  export default /* glsl */`
  float specularStrength;
  
  #ifdef USE_SPECULARMAP
  
  	vec4 texelSpecular = texture2D( specularMap, vUv );
  	specularStrength = texelSpecular.r;
  
  #else
  
  	specularStrength = 1.0;
  
  #endif
  `;
  