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<!--
Copyright (c) 2019 The Khronos Group Inc.
Use of this source code is governed by an MIT-style license that can be
found in the LICENSE.txt file.
-->
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>GLSL atan-xy function test</title>
<link rel="stylesheet" href="../../../resources/js-test-style.css"/>
<link rel="stylesheet" href="../../../resources/glsl-feature-tests.css"/>
<script src="../../../js/js-test-pre.js"></script>
<script src="../../../js/webgl-test-utils.js"> </script>
<script src="../../../js/glsl-generator.js"> </script>
</head>
<body>
<div id="description"></div>
<div id="console"></div>
<script>
"use strict";
var piConstants = [
"const float kPI = 3.14159265358979323846;",
"const float kHalfPI = (kPI * 0.5);",
"const float k2PI = (kPI * 2.0);"
].join("\n");
var kPI = Math.PI;
var kHalfPI = Math.PI * 0.5;
var k2PI = Math.PI * 2.0;
var atan2 = Math.atan2; // shorthand
GLSLGenerator.runReferenceImageTest({
feature: "atan",
args: "$(type) y, $(type) x",
testFunc: "$(func)($(type), $(type))",
gridRes: 8,
tolerance: 5,
extra: piConstants,
tests: [
{
source: ["$(output) = vec4(",
" $(func)($(input).x + 0.1, $(input).y) / k2PI + 0.5,",
" 0,",
" 0,",
" 1);"].join("\n"),
generator: function(x, y, z, w) {
return [ atan2(x + 0.1, y) / k2PI + 0.5,
0,
0,
1 ];
},
},
{
source: ["$(output) = vec4(",
" $(func)($(input).xy + vec2(0.1, 0.1), $(input).yx) / ",
" k2PI + vec2(0.5, 0.5),",
" 0, 1);"].join("\n"),
generator: function(x, y, z, w) {
return [ atan2(x + 0.1, y) / k2PI + 0.5,
atan2(y + 0.1, x) / k2PI + 0.5,
0,
1 ];
},
},
{
source: ["$(output) = vec4(",
" $(func)($(input).xyz + vec3(0.1, 0.1, 0.1), $(input).yzx) / ",
" k2PI + vec3(0.5, 0.5, 0.5),",
" 1);"].join("\n"),
generator: function(x, y, z, w) {
return [ atan2(x + 0.1, y) / k2PI + 0.5,
atan2(y + 0.1, z) / k2PI + 0.5,
atan2(z + 0.1, x) / k2PI + 0.5,
1 ];
},
},
{
source: ["$(output) = ",
" $(func)($(input) + vec4(0.1, 0.1, 0.1, 0.1), $(input).wzyx) / ",
" k2PI + vec4(0.5, 0.5, 0.5, 0.5);",
].join("\n"),
generator: function(x, y, z, w) {
return [ atan2(x + 0.1, w) / k2PI + 0.5,
atan2(y + 0.1, z) / k2PI + 0.5,
atan2(z + 0.1, y) / k2PI + 0.5,
atan2(w + 0.1, x) / k2PI + 0.5 ];
},
},
]
});
var successfullyParsed = true;
</script>
</body>
</html>
|
