| <!-- |
| 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> |
| |
