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1 <!DOCTYPE HTML> |
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2 <html> |
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3 <head> |
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4 <meta charset="utf-8"> |
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5 <script type="text/javascript"> |
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6 |
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7 window.onload = function() { |
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8 setup("1"); |
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9 setup("2"); |
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10 } |
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11 |
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12 function setup(id) { |
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13 var c = document.getElementById(id); |
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14 var names = ["webgl", "experimental-webgl"]; |
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15 for (var i = 0; i < names.length; ++i) { |
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16 gl = canvas.getContext(names[i]); |
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17 if (gl) { |
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18 break; |
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19 } |
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20 } |
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21 gl.clearColor(1,0,0,1); |
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22 gl.clear(gl.COLOR_BUFFER_BIT); |
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23 setTimeout(function() { |
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24 gl.enable(gl.SCISSOR_TEST); |
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25 gl.scissor(0,0,50,50); |
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26 gl.clearColor(0,1,0,1); |
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27 gl.clear(gl.COLOR_BUFFER_BIT); |
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28 }, 500); |
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29 } |
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30 </script> |
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31 </head> |
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32 <body> |
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33 <canvas id="1"></canvas> |
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34 <div style="height:4000px;">content that is tall like several articles</div> |
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35 <canvas id="2"></canvas> |
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36 </body> |
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37 </html> |
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38 |