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Side by Side Diff: conformance/glsl/functions/glsl-function-cos.html

Issue 8342021: Add webgl conformance tests r15841. (Closed) Base URL: svn://chrome-svn/chrome/trunk/deps/third_party/webgl/sdk/tests/
Patch Set: Created 9 years, 2 months ago
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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>GLSL cos function test</title>
11 <link rel="stylesheet" href="../../../resources/js-test-style.css"/>
12 <link rel="stylesheet" href="../../resources/glsl-feature-tests.css"/>
13 <script src="../../../resources/js-test-pre.js"></script>
14 <script src="../../resources/webgl-test.js"> </script>
15 <script src="../../resources/webgl-test-utils.js"> </script>
16 <script src="../../resources/glsl-generator.js"> </script>
17 </head>
18 <body>
19 <div id="description"></div>
20 <div id="console"></div>
21 <script>
22
23 var piConstants = [
24 "const float kPI = 3.14159265358979323846;",
25 "const float kHalfPI = (kPI * 0.5);",
26 "const float k2PI = (kPI * 2.0);"
27 ].join("\n");
28
29 var sinImplementation = [
30 "",
31 "float sin_impl(float value) {",
32 " value = mod(value + k2PI * 10.0, k2PI);", // only positive value s for now
33 " int quad = int(floor(value / kHalfPI));", // figure out which qu ad
34 " float p = mod(value, kHalfPI);", // from 0.0 to PI/2
35 " if (quad == 1 || quad == 3) { p = kHalfPI - p; }", // backward in quads 1 ,3
36 " float c = p - ",
37 " pow(p, 3.0) / (1.0 * 2.0 * 3.0) + ",
38 " pow(p, 5.0) / (1.0 * 2.0 * 3.0 * 4.0 * 5.0) - ",
39 " pow(p, 7.0) / (1.0 * 2.0 * 3.0 * 4.0 * 5.0 * 6.0 * 7.0);",
40 " if (quad == 2 || quad == 3) { c = -c; }",
41 " return c;",
42 "}"
43 ].join('\n');
44
45 GLSLGenerator.runFeatureTest({
46 feature: "cos",
47 args: "$(type) value",
48 baseArgs: "value$(field)",
49 testFunc: "$(func)($(type))",
50 emuFunc: [
51 sinImplementation,
52 "float $(func)_base(float value) {",
53 " return sin_impl(value + kHalfPI);",
54 "}"
55 ].join("\n"),
56 gridRes: 8,
57 tolerance: 2,
58 extra: piConstants,
59 tests: [
60 ["$(output) = vec4(",
61 " $(func)($(input).x * kHalfPI + kHalfPI),",
62 " $(func)($(input).y * kHalfPI),",
63 " 0,",
64 " 1);"].join("\n"),
65 ["$(output) = vec4(",
66 " $(func)($(input).xy * vec2(kPI, k2PI)) * 0.5 + vec2(0.5, 0.5),",
67 " 0, 1);"].join("\n"),
68 ["$(output) = vec4(",
69 " $(func)($(input).xyz * vec3(kPI, k2PI, 4.0)) * ",
70 " 0.5 + vec3(0.5, 0.5, 0.5),",
71 " 1);"].join("\n"),
72 ["$(output) = ",
73 " $(func)($(input) * vec4(k2PI, 4.0, kHalfPI, kPI)) *",
74 " 0.5 + vec4(0.5, 0.5, 0.5, 1);",
75 ].join("\n")
76 ]
77 });
78 successfullyParsed = true;
79 </script>
80 </body>
81 </html>
82
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