anchor.diff:  
   			if ( texture.anisotropy > 1 || ( texture["__oldAnisotropy"] != null) ) {
   
  -				_gl.texParameterf( textureType, EXTTextureFilterAnisotropic.TEXTURE_MAX_ANISOTROPY_EXT, Math.min( texture.anisotropy, maxAnisotropy ) );
  +				_gl.texParameterf( textureType, ExtTextureFilterAnisotropic.TEXTURE_MAX_ANISOTROPY_EXT, Math.min( texture.anisotropy, maxAnisotropy ) );
   				texture["__oldAnisotropy"] = texture.anisotropy;
   
   			}
  
positive.code: 	  maxTextureSize = _gl.getParameter( WebGLRenderingContext.MAX_TEXTURE_SIZE );
  	  maxCubemapSize = _gl.getParameter( WebGLRenderingContext.MAX_CUBE_MAP_TEXTURE_SIZE );
  
    	maxAnisotropy = (_glExtensionTextureFilterAnisotropic != null) ? _gl.getParameter( EXTTextureFilterAnisotropic.MAX_TEXTURE_MAX_ANISOTROPY_EXT ) : 0;
  
    	supportsVertexTextures = ( maxVertexTextures > 0 );
    	supportsBoneTextures = supportsVertexTextures && (_glExtensionTextureFloat != null);
  
negative.code:   bool _lightsNeedUpdate;
  
    // GL Extensions
    OesTextureFloat _glExtensionTextureFloat;
    OesStandardDerivatives _glExtensionStandardDerivatives;
  	ExtTextureFilterAnisotropic _glExtensionTextureFilterAnisotropic;
  
    var maxAnisotropy;
  
  