ブレンドでシェーダを使う

var foregroundShape:Shape = new Shape(); 
var g2:Graphics = foregroundShape.graphics; 
var c2:Array = [0xff8000, 0x663300]; 
var a2:Array = [255, 255]; 
var r2:Array = [100, 255]; 
var m2:Matrix = new Matrix(); 
m2.createGradientBox(300, 200); 
g2.beginGradientFill(GradientType.LINEAR, c2, a2, r2, m2); 
g2.drawEllipse(100, 0, 300, 200); 
g2.endFill(); 
addChild(foregroundShape); 
//ブレンドモードをシェーダにする
foregroundShape.blendShader = shader; 
foregroundShape.blendMode = BlendMode.SHADER;