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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 smoothstep-float 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";
function clamp(value, min, max) {
return Math.max(min, Math.min(value, max));
}
function smoothstep(edge0, edge1, value) {
var t = clamp((value - edge0) / (edge1 - edge0), 0, 1);
return t * t * (3 - 2 * t);
}
GLSLGenerator.runReferenceImageTest({
feature: "smoothstep",
args: "float edge0, float edge1, $(type) value",
testFunc: "$(func)(float, float, $(type))",
gridRes: 8,
tolerance: 4,
tests: [
{
source: ["$(output) = vec4(",
" $(func)(0.3, 0.7, $(input).x),",
" $(func)(0.2, 0.8, $(input).y),",
" 0,",
" 1);"].join("\n"),
generator: function(x, y, z, w) {
return [ smoothstep(0.3, 0.7, x),
smoothstep(0.2, 0.8, y),
0,
1 ];
},
},
{
source: [ "$(output) = vec4(",
" $(func)(0.4, 0.8, $(input).xy),",
" 0, 1);"].join("\n"),
generator: function(x, y, z, w) {
return [ smoothstep(0.4, 0.8, x),
smoothstep(0.4, 0.8, y),
0,
1 ];
},
},
{
// FIXME: this test seems to need a higher tolerance when run in a vertex shader.
source: [ "$(output) = vec4(",
" $(func)(0.3, 0.7, $(input).xyz),",
" 1);"].join("\n"),
generator: function(x, y, z, w) {
return [ smoothstep(0.3, 0.7, x),
smoothstep(0.3, 0.7, y),
smoothstep(0.3, 0.7, z),
1 ];
},
tolerance: 12,
fragmentTolerance: 3,
},
{
// FIXME: this test seems to need a higher tolerance when run in a vertex shader.
source: ["$(output) = ",
" $(func)(0.3, 0.9, $(input));"].join("\n"),
generator: function(x, y, z, w) {
return [ smoothstep(0.3, 0.9, x),
smoothstep(0.3, 0.9, y),
smoothstep(0.3, 0.9, z),
smoothstep(0.3, 0.9, w) ];
},
tolerance: 7,
fragmentTolerance: 3,
},
]
});
var successfullyParsed = true;
</script>
</body>
</html>
|
