content/canvas/test/webgl-conformance/conformance/rendering/gl-scissor-test.html@deefc01c0e14
content/canvas/test/webgl-conformance/conformance/rendering/gl-scissor-test.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 <!--
2 Copyright (c) 2011 The Chromium Authors. All rights reserved.
3 Use of this source code is governed by a BSD-style license that can be
4 found in the LICENSE file.
5 -->
6 <!DOCTYPE html>
7 <html>
8 <head>
9 <meta charset="utf-8">
10 <title>WebGL Scissor Test</title>
11 <link rel="stylesheet" href="../../resources/js-test-style.css"/>
12 <script src="../../resources/desktop-gl-constants.js" type="text/javascript"></script>
13 <script src="../../debug/webgl-debug.js"></script>
14 <script src="../../resources/js-test-pre.js"></script>
15 <script src="../resources/webgl-test-utils.js"></script>
16 </head>
17 <body>
18 <div id="description"></div>
19 <div id="console"></div>
20 <canvas id="canvas" width="2" height="2" style="width: 40px; height: 40px;"> </canvas>
21 <script>
22 description("Check if glScissor setting works.");
24 debug("");
25 debug("Canvas.getContext");
27 var wtu = WebGLTestUtils;
28 var gl = wtu.create3DContext(document.getElementById("canvas"));
29 if (!gl) {
30 testFailed("context does not exist");
31 } else {
32 testPassed("context exists");
34 debug("");
36 gl.clearColor(0,0,0,0);
37 gl.clear(gl.COLOR_BUFFER_BIT);
39 // clear a portion of our FBO
40 gl.enable(gl.SCISSOR_TEST);
41 gl.scissor(0, 0, 1, 1);
42 gl.clearColor(0,1,0,1);
43 gl.clear(gl.COLOR_BUFFER_BIT);
45 var b = new Uint8Array(2 * 2 * 4);
46 gl.readPixels(0, 0, 2, 2, gl.RGBA, gl.UNSIGNED_BYTE, b);
48 function checkPixel(b, x, y, color) {
49 var offset = (y * 2 + x) * 4;
50 var match = true;
51 for (var c = 0; c < 4; ++c) {
52 if (b[offset + c] != color[c] * 255) {
53 match = false;
54 break;
55 }
56 }
57 assertMsg(match, "pixel at " + x + ", " + y + " is expected value");
58 }
60 checkPixel(b, 0, 0, [0, 1, 0, 1]);
61 checkPixel(b, 1, 0, [0, 0, 0, 0]);
62 checkPixel(b, 0, 1, [0, 0, 0, 0]);
63 checkPixel(b, 1, 1, [0, 0, 0, 0]);
64 }
66 debug("");
67 successfullyParsed = true;
69 </script>
70 <script>finishTest();</script>
72 </body>
73 </html>
