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42 lines
996 B
42 lines
996 B
7 years ago
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// Grab the WebGL extensions currently supported and add to the Modernizr.webgl object
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// spec: www.khronos.org/registry/webgl/specs/latest/#5.13.14
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// based on code from ilmari heikkinen
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// code.google.com/p/graphics-detect/source/browse/js/detect.js
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(function(){
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if (!Modernizr.webgl) return;
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var canvas, ctx, exts;
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try {
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canvas = document.createElement('canvas');
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ctx = canvas.getContext('webgl') || canvas.getContext('experimental-webgl');
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exts = ctx.getSupportedExtensions();
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}
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catch (e) {
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return;
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}
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if (ctx === undefined) {
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Modernizr.webgl = new Boolean(false);
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}
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else {
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Modernizr.webgl = new Boolean(true);
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}
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for (var i = -1, len = exts.length; ++i < len; ){
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Modernizr.webgl[exts[i]] = true;
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}
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// hack for addressing modernizr testsuite failures. sorry.
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if (window.TEST && TEST.audvid){
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TEST.audvid.push('webgl');
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}
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canvas = undefined;
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})();
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