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nova-right-nav
File size: 5,932 Bytes
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<!doctype html>

<html style='height: 100%;'>

<head>
    <link href='https://www.mapbox.com/base/latest/base.css' rel='stylesheet' />

    <style>

        body {
            display:flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
        }

        h2 {
            margin-top: 50px;
            margin-bottom: 10px;
        }

        #table, #map, #map-log, #diagnostics-log {
            width: 960px;
            margin: 10px 0;
        }

        #map {
            height: 100px;
        }

        #canvas {
            height: 0;
        }

        th code {
            font-weight: bold;
        }
    </style>
</head>

<body class='fill-gray'>

    <h2>Map instantiation diagnostics</h2>
    <div id="map"></div>
    <code id="map-log"></code>
    <script src='https://api.mapbox.com/mapbox-gl-js/v0.34.0/mapbox-gl.js'></script>
    <script>
    mapboxgl.accessToken = 'pk.eyJ1IjoibHVjYXN3b2oiLCJhIjoiY2l5Nmg4cWU1MDA0ejMzcDJtNHJmZzJkcyJ9.WhcEdTYQH6sSw2pm0RSP9Q';
        try {
            var map = new mapboxgl.Map({
                container: 'map',
                style: 'mapbox://styles/mapbox/streets-v9',
                zoom: 1
            });
            map.on('error', function(event) {
                writeLogMessage(event.error.toString());
            });
            writeLogMessage('WebGL context:', map.painter.gl);
            writeLogMessage('WebGL errors:', map.painter.gl.getError());
        } catch (e) {
            writeLogMessage('Caught exception:', e.stack || e.toString());
        }
        writeLogMessage('Done!');

        function writeLogMessage() {
            document.getElementById('map-log').innerHTML += Array.prototype.join.call(arguments, ' ') + '\n';
        }
    </script>



    <h2>Support detection diagnostics</h2>
    <canvas id="canvas"></canvas>
    <table id='table'>
        <tr>
            <th>Detection method</th>
            <th>Context type</th>
            <th><code>failIfMajorPerformanceCaveat</code></th>
            <th>Result</th>
            <th>Errors</th>
        </tr>
    </table>
    <script src='index.js'></script>
    <script>
        function performTest(detectionMethod, contextType, failIfMajorPerformanceCaveat) {
            var attributes = Object.create(mapboxgl.supported.webGLContextAttributes);
            attributes.failIfMajorPerformanceCaveat = failIfMajorPerformanceCaveat;

            var canvas = document.getElementById('canvas');
            if (canvas[detectionMethod]) {
                var results = '<code>' + canvas[detectionMethod](contextType, attributes) + '</code>';
                writeTestResults(results, results && results.getError && results.getError());
            } else {
                writeTestResults('detection method unavailable');
            }

            function writeTestResults(result, error) {
                var tr = document.createElement('tr');

                var detectionMethodTd = document.createElement('td');
                detectionMethodTd.innerHTML = detectionMethod;
                tr.appendChild(detectionMethodTd);

                var contextTypeTd = document.createElement('td');
                contextTypeTd.innerHTML = contextType;
                tr.appendChild(contextTypeTd);

                var failIfMajorPerformanceCaveatTd = document.createElement('td');
                failIfMajorPerformanceCaveatTd.innerHTML = failIfMajorPerformanceCaveat;
                tr.appendChild(failIfMajorPerformanceCaveatTd);

                var resultTd = document.createElement('td');
                resultTd.innerHTML = result;
                tr.appendChild(resultTd);

                var errorTd = document.createElement('td');
                errorTd.innerHTML = error || 'none';
                tr.appendChild(errorTd);

                document.getElementById('table').appendChild(tr);
            }
        }

        performTest('probablySupportsContext', 'webgl', true);
        performTest('probablySupportsContext', 'webgl', false);
        performTest('probablySupportsContext', 'experimental-webgl', true);
        performTest('probablySupportsContext', 'experimental-webgl', false);

        performTest('supportsContext', 'webgl', true);
        performTest('supportsContext', 'webgl', false);
        performTest('supportsContext', 'experimental-webgl', true);
        performTest('supportsContext', 'experimental-webgl', false);

        performTest('getContext', 'webgl', true);
        performTest('getContext', 'webgl', false);
        performTest('getContext', 'experimental-webgl', true);
        performTest('getContext', 'experimental-webgl', false);
    </script>



    <h2>WebGL diagnostics</h2>
    <script src="https://cdn.rawgit.com/ashima/webgl-diagnostic/3cc7b376/js/webgldiagdata.js"></script>
    <script src="https://cdn.rawgit.com/ashima/webgl-diagnostic/3cc7b376/js/webgldiagnostic.js"></script>
    <code id="diagnostics-log"></code>
    <script>
        var diagnosticsLogElement = document.getElementById('diagnostics-log');
        diagnosticsLogElement.innerHTML = WebGLDiagnostic.report('canvas');

        var canvasElement = document.getElementById('canvas');
        var gl = canvasElement.getContext('webgl') || canvasElement.getContext('experimental-webgl');
        var glDebugRendererInfo = gl.getExtension('WEBGL_debug_renderer_info');
        diagnosticsLogElement.innerHTML += '\n';
        if (glDebugRendererInfo) {
            diagnosticsLogElement.innerHTML += 'Unmasked vendor: ' + gl.getParameter(glDebugRendererInfo.UNMASKED_VENDOR_WEBGL) + '\n';
            diagnosticsLogElement.innerHTML += 'Unmasked renderer: ' + gl.getParameter(glDebugRendererInfo.UNMASKED_RENDERER_WEBGL) + '\n';
        } else {
            diagnosticsLogElement.innerHTML += '"WEBGL_debug_renderer_info" extension unavailable'
        }
    </script>


</body>

</html>