//= require modernizr

// Grab the WebGL extensions currently supported and add to the Modernizr.webgl object // spec: www.khronos.org/registry/webgl/specs/latest/#5.13.14

// based on code from ilmari heikkinen // code.google.com/p/graphics-detect/source/browse/js/detect.js

(function(){

if (!Modernizr.webgl) return;

var canvas, ctx, exts;

try {
    canvas  = document.createElement('canvas');
    ctx     = canvas.getContext('webgl') || canvas.getContext('experimental-webgl');
    exts    = ctx.getSupportedExtensions();
}
catch (e) {
    return;
}

if (ctx === undefined) {
    Modernizr.webgl = new Boolean(false);
}
else {
    Modernizr.webgl = new Boolean(true);
}

for (var i = -1, len = exts.length; ++i < len; ){
    Modernizr.webgl[exts[i]] = true;
}

// hack for addressing modernizr testsuite failures. sorry.
if (window.TEST && TEST.audvid){
    TEST.audvid.push('webgl');
}

canvas = undefined;

})();