/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

/**
 * This helper function will automatically detect which renderer you should be using.
 * WebGL is the preferred renderer as it is a lot fastest. If webGL is not supported by
 * the browser then this function will return a canvas renderer
 *
 * @method autoDetectRenderer
 * @static
 * @param width {Number} the width of the renderers view
 * @param height {Number} the height of the renderers view
 * @param view {Canvas} the canvas to use as a view, optional
 * @param transparent=false {Boolean} the transparency of the render view, default false
 * @param antialias=false {Boolean} sets antialias (only applicable in webGL chrome at the moment)
 *
 * antialias
 */
PIXI.autoDetectRenderer = function(width, height, view, transparent, antialias)
{
    if(!width)width = 800;
    if(!height)height = 600;

    // BORROWED from Mr Doob (mrdoob.com)
    var webgl = ( function () { try {
                                    var canvas = document.createElement( 'canvas' );
                                    return !! window.WebGLRenderingContext && ( canvas.getContext( 'webgl' ) || canvas.getContext( 'experimental-webgl' ) );
                                } catch( e ) {
                                    return false;
                                }
                            } )();

    if(webgl)
    {
        var ie =  (navigator.userAgent.toLowerCase().indexOf('trident') !== -1);
        webgl = !ie;
    }

    //console.log(webgl);
    if( webgl )
    {
        return new PIXI.WebGLRenderer(width, height, view, transparent, antialias);
    }

    return  new PIXI.CanvasRenderer(width, height, view, transparent);
};