security-and-privacy/CanvasBlocker
security-and-privacy/CanvasBlocker
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Test cleanup.

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kkapsner 2017-08-13 23:44:31 +02:00
parent d8f6fb1ac9
commit 7d0c9681df
11 changed files with 437 additions and 395 deletions
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18
test/webGL-Test.js Normal file
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(function(){
var canvas = document.createElement('canvas');
canvas.width = 11;
canvas.height = 13;
var gl = canvas.getContext('webgl');
// paint it completely black
gl.clearColor(0, 0, 0, 1);
gl.clear(gl.COLOR_BUFFER_BIT);
var pixels = new Uint8Array(gl.drawingBufferWidth * gl.drawingBufferHeight * 4);
gl.readPixels(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight, gl.RGBA, gl.UNSIGNED_BYTE, pixels);
var values = {};
for (var i = 0; i < pixels.length; i += 1){
values[pixels[i]] = (values[pixels[i]] || 0) + 1;
}
document.getElementById("output").textContent = JSON.stringify(values);
}());