1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/content/canvas/test/reftest/webgl-disable-test.html Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,60 @@
1.4 +<!DOCTYPE html>
1.5 +<html class="reftest-wait">
1.6 +<head>
1.7 +<meta charset="UTF-8">
1.8 +
1.9 +<script type="text/javascript" src="webgl-utils.js"></script>
1.10 +<script type="text/javascript">
1.11 +/* Disable Test
1.12 + *
1.13 + * If we succeed in getting a WebGL context, we will fill
1.14 + * the canvas with red. If we fail to acquire a WebGL context,
1.15 + * we will use Canvas2D to instead fill it with green.
1.16 + *
1.17 + * Note that this test differs from the others in that
1.18 + * it will draw differently if it receives a WebGL context.
1.19 + * Other tests are designed to fallback silently to Canvas2D.
1.20 + *
1.21 + * We use this test to assure that when we disable WebGL,
1.22 + * WebGL does not function. This is trivially true for systems
1.23 + * that don't support WebGL. This test is not viable for testing
1.24 + * that WebGL works, as blocklisted systems will always draw green.
1.25 + */
1.26 +
1.27 +"use strict";
1.28 +
1.29 +function renderGL(gl) {
1.30 + gl.clearColor(1.0, 0.0, 0.0, 1.0);
1.31 + gl.clear(gl.COLOR_BUFFER_BIT);
1.32 + gl.finish();
1.33 +}
1.34 +
1.35 +function renderBackup(canvas) {
1.36 + var context = canvas.getContext("2d");
1.37 + context.fillStyle = "rgba(0, 255, 0, 1.0)";
1.38 + context.fillRect(0, 0, 256, 256);
1.39 +}
1.40 +
1.41 +function runTest() {
1.42 + var canvas = document.getElementById("canvas");
1.43 + var gl = initGL(canvas);
1.44 +
1.45 + if (gl)
1.46 + renderGL(gl);
1.47 + else
1.48 + renderBackup(canvas);
1.49 +
1.50 + waitForComposite(testComplete);
1.51 +}
1.52 +
1.53 +function testComplete() {
1.54 + document.documentElement.removeAttribute("class");
1.55 +}
1.56 +</script>
1.57 +</head>
1.58 +
1.59 +<body onload="rAF(runTest);">
1.60 + <canvas id="canvas" width="256" height="256"></canvas>
1.61 +</body>
1.62 +
1.63 +</html>
