drawShader(shader, x, y, width, height, color, alpha, sort)
{
hud = newClientHudElem(self);
hud.archived = false;
hud.color = color;
hud.alpha = alpha;
hud.sort = sort;
hud.children = [];
hud setParent( level.uiParent );
hud setShader( shader, width, height );
hud.x = x;
hud.y = y;
return hud;
}