package org.papervision3d.materials.shaders{	import flash.display.BitmapData;	import flash.display.BlendMode;	import flash.display.Sprite;	import flash.events.EventDispatcher;	import flash.filters.BitmapFilter;	import flash.utils.Dictionary;		import org.papervision3d.core.geom.renderables.Triangle3D;	import org.papervision3d.core.render.data.RenderSessionData;	import org.papervision3d.core.render.shader.ShaderObjectData;	import org.papervision3d.objects.DisplayObject3D;		/**	 * @Author Ralph Hauwert	 */	public class Shader extends EventDispatcher implements IShader	{		protected var _filter:BitmapFilter;		protected var _blendMode:String = BlendMode.MULTIPLY;		protected var _object:DisplayObject3D;		protected var layers:Dictionary;				public function Shader()		{			super();			this.layers = new Dictionary(true);		}						public function renderLayer(triangle:Triangle3D, renderSessionData:RenderSessionData, sod:ShaderObjectData):void		{					}				public function renderTri(triangle:Triangle3D, renderSessionData:RenderSessionData, sod:ShaderObjectData, bmp:BitmapData):void		{					}				public function destroy():void		{					}				public function setContainerForObject(object:DisplayObject3D, layer:Sprite):void		{			layers[object] = layer;		}				public function set filter(filter:BitmapFilter):void		{			_filter = filter;		}				public function get filter():BitmapFilter		{			return _filter;			}				public function set layerBlendMode(blendMode:String):void		{			_blendMode = blendMode;		}				public function get layerBlendMode():String		{			return _blendMode;		}				public function updateAfterRender(renderSessionData:RenderSessionData, sod:ShaderObjectData):void		{					}			}}