| OLD | NEW |
|---|
| (Empty) |
| 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 atan-xy 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 atanImplementation = [ | |
| 30 "const float kEpsilon = 0.0001;", | |
| 31 "", | |
| 32 "float atan_impl(float y, float x) {", | |
| 33 " float atan_value = 0.0;", | |
| 34 " float scale = 1.0;", | |
| 35 " float sign = 1.0;", | |
| 36 "", | |
| 37 " if (x > kEpsilon || abs(y) > kEpsilon) {", | |
| 38 " if (x < 0.0 ^^ y < 0.0) {", | |
| 39 " sign = -1.0;", | |
| 40 " }", | |
| 41 "", | |
| 42 " bool y_gt_x = abs(y) < abs(x);", | |
| 43 " float value = y_gt_x ? abs(y / x) : abs(x / y);", | |
| 44 "", | |
| 45 " // Use Taylors series expansion for atan", | |
| 46 " for(int ii = 1; ii < 8; ii += 2) {", | |
| 47 " atan_value += scale * pow(value, float(ii)) / float(ii);", | |
| 48 " scale = -scale;", | |
| 49 " }", | |
| 50 "", | |
| 51 " atan_value = (y_gt_x) ? sign * atan_value : sign * (kHalfPI - atan_value)
;", | |
| 52 " }", | |
| 53 "", | |
| 54 " if (x < 0.0) {", | |
| 55 " if (y < 0.0) {", | |
| 56 " atan_value -= kHalfPI;", | |
| 57 " } else if (y > 0.0) {", | |
| 58 " atan_value += kHalfPI;", | |
| 59 " }", | |
| 60 " }", | |
| 61 "", | |
| 62 " return atan_value;", | |
| 63 "}" | |
| 64 ].join("\n"); | |
| 65 | |
| 66 GLSLGenerator.runFeatureTest({ | |
| 67 feature: "atan", | |
| 68 args: "$(type) y, $(type) x", | |
| 69 baseArgs: "y$(field), x$(field)", | |
| 70 testFunc: "$(func)($(type), $(type))", | |
| 71 emuFunc: [ | |
| 72 atanImplementation, | |
| 73 "float $(func)_base(float y, float x) {", | |
| 74 " return atan_impl(y, x);", | |
| 75 "}" | |
| 76 ].join("\n"), | |
| 77 gridRes: 8, | |
| 78 tolerance: 4, | |
| 79 extra: piConstants, | |
| 80 tests: [ | |
| 81 ["$(output) = vec4(", | |
| 82 " $(func)($(input).x + 0.1, $(input).y) / k2PI + 0.5,", | |
| 83 " 0,", | |
| 84 " 0,", | |
| 85 " 1);"].join("\n"), | |
| 86 ["$(output) = vec4(", | |
| 87 " $(func)($(input).xy + vec2(0.1, 0.1), $(input).yx) / ", | |
| 88 " k2PI + vec2(0.5, 0.5),", | |
| 89 " 0, 1);"].join("\n"), | |
| 90 ["$(output) = vec4(", | |
| 91 " $(func)($(input).xyz + vec3(0.1, 0.1, 0.1), $(input).yzx) / ", | |
| 92 " k2PI + vec3(0.5, 0.5, 0.5),", | |
| 93 " 1);"].join("\n"), | |
| 94 ["$(output) = ", | |
| 95 " $(func)($(input) + vec4(0.1, 0.1, 0.1, 0.1), $(input).wzyx) / ", | |
| 96 " k2PI + vec4(0.5, 0.5, 0.5, 0.5);", | |
| 97 ].join("\n") | |
| 98 ] | |
| 99 }); | |
| 100 successfullyParsed = true; | |
| 101 </script> | |
| 102 </body> | |
| 103 </html> | |
| 104 | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 9360034:
Remove everthing except conformance tests in the deps/third_party/webgl (Closed)
Base URL: svn://chrome-svn/chrome/trunk/deps/