content/canvas/test/webgl-conformance/conformance/context/context-attribute-preserve-drawing-buffer.html@deefc01c0e14
content/canvas/test/webgl-conformance/conformance/context/context-attribute-preserve-drawing-buffer.html
Thu, 15 Jan 2015 21:03:48 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 15 Jan 2015 21:03:48 +0100
- branch
- TOR_BUG_9701
- changeset 11
- deefc01c0e14
- permissions
- -rw-r--r--
Integrate friendly tips from Tor colleagues to make (or not) 4.5 alpha 3;
This includes removal of overloaded (but unused) methods, and addition of
a overlooked call to DataStruct::SetData(nsISupports, uint32_t, bool.)
1 <!--
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25 <!DOCTYPE html>
26 <html>
27 <head>
28 <meta charset="utf-8">
29 <link rel="stylesheet" href="../../resources/js-test-style.css"/>
30 <script src="../../resources/js-test-pre.js"></script>
31 <script src="../resources/webgl-test.js"></script>
32 <style>
33 canvas {
34 width:50px;
35 height:50px;
36 }
37 .square {
38 display:inline-block;
39 width:50px;
40 height:50px;
41 background-color:red;
42 }
43 </style>
44 <script>
45 function checkResult(ctx1, ctx2, preserve) {
46 var imgData1 = ctx1.getImageData(0,0,1,1);
47 var imgData2 = ctx2.getImageData(0,0,1,1);
48 var correct1 = [255,0,0,255];
49 var correct2 = preserve ? [255,0,0,255] : [0,0,0,255];
50 var ok1 = true;
51 var ok2 = true;
52 for (var p = 0; p < 4; ++p) {
53 if (imgData1.data[p] != correct1[p])
54 ok1 = false;
55 if (imgData2.data[p] != correct2[p])
56 ok2 = false;
57 }
58 if (ok1 && ok2)
59 testPassed('Rendered ok with preserveDrawingBuffer ' + preserve +'.');
60 else
61 testFailed('Did not render ok with preserveDrawingBuffer ' + preserve + '.');
62 if (preserve) {
63 debug('<br /><span class="pass">TEST COMPLETE</span>');
64 notifyFinishedToHarness()
65 } else {
66 runTest(true);
67 }
68 }
70 function runTest(preserve) {
71 var c1 = document.getElementById('c' + (preserve * 3 + 1));
72 var c2 = document.getElementById('c' + (preserve * 3 + 2));
73 var c3 = document.getElementById('c' + (preserve * 3 + 3));
74 var ctx1 = c1.getContext('2d');
75 var ctx2 = c2.getContext('2d');
76 var gl = c3.getContext('experimental-webgl', { alpha:false, preserveDrawingBuffer:preserve });
77 gl.clearColor(1, 0, 0, 1);
78 gl.clear(gl.COLOR_BUFFER_BIT);
79 ctx1.drawImage(c3, 0, 0);
80 setTimeout(function() { ctx2.drawImage(c3, 0, 0); checkResult(ctx1, ctx2, preserve); }, 100);
82 }
83 </script>
84 </head>
85 <body>
86 <div>
87 <canvas id='c1'></canvas>
88 <canvas id='c2'></canvas>
89 <canvas id='c3'></canvas>
90 <span>should look as right pattern</span>
91 <div class='square'></div>
92 <div class='square' style='background-color:black'></div>
93 <div class='square'></div>
94 </div>
95 <div>
96 <canvas id='c4'></canvas>
97 <canvas id='c5'></canvas>
98 <canvas id='c6'></canvas>
99 <span>should look as right pattern</span>
100 <div class='square'></div>
101 <div class='square'></div>
102 <div class='square'></div>
103 </div>
104 <div id="description"></div>
105 <div id="console"></div>
106 <script>
107 description('Verify that preserveDrawingBuffer attribute is honored.');
108 runTest(false);
109 successfullyParsed = true;
110 shouldBeTrue("successfullyParsed");
111 </script>
112 </body>
113 </html>
