package org.papervision3d.core.render.shader{	import flash.display.Bitmap;	import flash.display.BitmapData;	import flash.display.BlendMode;	import flash.display.Sprite;	import flash.events.EventDispatcher;	import flash.utils.Dictionary;		import org.papervision3d.core.render.data.RenderSessionData;	import org.papervision3d.materials.shaders.Shader;		/**	 * Author Ralph Hauwert	 */	public class ShaderRenderer extends EventDispatcher implements IShaderRenderer	{		public var bitmapLayer:Sprite;		public var container:Sprite;		public var bitmapContainer:Bitmap;		public var shadeLayers:Dictionary;				public var outputBitmap:BitmapData;		private var _inputBitmapData:BitmapData;				public function ShaderRenderer()		{			container = new Sprite();				bitmapLayer = new Sprite();			bitmapContainer = new Bitmap();						bitmapLayer.addChild(bitmapContainer);			bitmapLayer.blendMode = BlendMode.NORMAL;						shadeLayers = new Dictionary();			container.addChild(bitmapLayer);		}				public function render(renderSessionData:RenderSessionData):void		{			outputBitmap.fillRect(outputBitmap.rect, 0x000000);			bitmapContainer.bitmapData = inputBitmap;			outputBitmap.draw(container, null, null, null, outputBitmap.rect, false);		}				public function clear():void		{			var sprite:Sprite;			for each(sprite in shadeLayers){				sprite.graphics.clear();				sprite.graphics.beginFill(0,1);				sprite.graphics.drawRect(0,0,inputBitmap.width, inputBitmap.height);				sprite.graphics.endFill();			}		}				public function destroy():void		{			bitmapLayer = null;			//TODO : Destroy all shaderlayers.			outputBitmap.dispose();		}				public function getLayerForShader(shader:Shader):Sprite		{			var layer:Sprite = new Sprite();			shadeLayers[shader] = layer;			var rect:Sprite = new Sprite();			layer.addChild(rect);			rect.graphics.beginFill(0,0);			rect.graphics.drawRect(0,0,inputBitmap.width, inputBitmap.height);			rect.graphics.endFill();						container.addChild(layer);					layer.blendMode = shader.layerBlendMode;						return layer;		}				public function set inputBitmap(bitmapData:BitmapData):void		{			_inputBitmapData = bitmapData;			outputBitmap = _inputBitmapData.clone();		}				public function get inputBitmap():BitmapData		{			return _inputBitmapData;			}			}}