I also tried to create quad which result like below:
But, when I'm trying to set it's texture, it becomes like below:
Here is the code:
var texture:Texture = Texture.fromEmbeddedAsset(MozGamingLogo);
var quad:Quad = new Quad(200, 200, Color.WHITE);
quad.setVertexPosition(0, 100, 250);
quad.setVertexPosition(1, 150, 90);
quad.setVertexPosition(2, 300, 300);
quad.setVertexPosition(3, 350, 100);
quad.texture = texture;
addChild(quad);