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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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Chromium Code Reviews
Issue 8342021:
Add webgl conformance tests r15841. (Closed)
Base URL: svn://chrome-svn/chrome/trunk/deps/third_party/webgl/sdk/tests/