anchor.diff:      assert(err == WEBGL.NO_ERROR);
       gl.bindTexture(WEBGL.TEXTURE_2D, null);
     }
  +
  +  dynamic GetData() {
  +    return _data;
  +  }
   }
   
   class CubeTexture extends Texture {
  
positive.code:     ];
      properties.clamp = true;
    }
    
    void Install(WEBGL.RenderingContext gl) {
      _texture = gl.createTexture();
      gl.bindTexture(WEBGL.TEXTURE_CUBE_MAP, _texture);
  
negative.code:   }
  
    Texture(this._url) {
      _cache.add(this);
    }
  
    WEBGL.Texture GetTexture() {
  