class Texture {
 int id;
 var image;
 var mapping; //UVMapping appears to be missing..
 int wrapS, wrapT, magFilter, minFilter, format, type, anisotropy;
 Vector2 offset, repeat;
 bool generateMipmaps;
 bool premultiplyAlpha;

 bool needsUpdate;
 var onUpdate;

 bool flipY;

 int unpackAlignment = 4; // valid values: 1, 2, 4, 8 (see http://www.khronos.org/opengles/sdk/docs/man/xhtml/glPixelStorei.xml)

 List mipmaps = [];

 //TODO: resolve dynamic vars, find out what UVMapping is!
 Texture( [  this.image,
             this.mapping = null,
             this.wrapS = ClampToEdgeWrapping,
             this.wrapT = ClampToEdgeWrapping,
             this.magFilter = LinearFilter,
             this.minFilter = LinearMipMapLinearFilter,
             this.format = RGBAFormat,
             this.type = UnsignedByteType,
             this.anisotropy = 1] )
 {
   id = TextureCount ++;

   this.mapping = mapping != null ? mapping : new UVMapping();

   offset = new Vector2.zero();
   repeat = new Vector2( 1.0, 1.0 );

   generateMipmaps = true;
   premultiplyAlpha = false;
   flipY = true;

   needsUpdate = false;
   onUpdate = null;
 }

 Texture clone() {
   Texture clonedTexture = new Texture( image, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy );

   clonedTexture.mipmaps = new List.from( mipmaps );
   clonedTexture.offset.setFrom( offset );
   clonedTexture.repeat.setFrom( repeat );

   return clonedTexture;
 }

 // Quick hack to allow setting new properties (used by the renderer)
 Map __data;

 get _data {
   if (__data == null) {
     __data = {};
   }
   return __data;
 }

 operator [] (String key) => _data[key];
 operator []= (String key, value) => _data[key] = value;
}