| <!-- |
| 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 Structure as Out Parameter 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-conformance-test.js"></script> |
| |
| <script id="simple-vs" type="x-shader/x-vertex"> |
| attribute vec4 a_position; |
| void main(void) { |
| gl_Position = a_position; |
| } |
| </script> |
| <script id="struct-out-parameter-fs" type="x-shader/x-fragment"> |
| struct ColorData { |
| vec3 red; |
| vec3 blue; |
| }; |
| |
| void modify(out ColorData colorData) { |
| colorData.red = vec3(1.0, 0.0, 0.0); |
| colorData.blue = vec3(0.0, 0.0, 1.0); |
| } |
| |
| void main() { |
| ColorData colorData; |
| |
| vec3 red = vec3(1.0, 0.0, 0.0); |
| vec3 green = vec3(0.0, 1.0, 0.0); |
| vec3 blue = vec3(0.0, 0.0, 1.0); |
| vec3 finalColor; |
| |
| modify(colorData); |
| |
| if (colorData.red == red && colorData.blue == blue) |
| finalColor = green; |
| else |
| finalColor = red; |
| |
| gl_FragColor = vec4(finalColor, 1.0); |
| } |
| </script> |
| </head> |
| <body> |
| <div id="description"></div> |
| <div id="console"></div> |
| <script> |
| "use strict"; |
| description("Testing structs as out parameter"); |
| |
| debug('Regression test for <a href="http://crbug.com/851873">http://crbug.com/851873</a> / <a href="https://github.com/mrdoob/three.js/issues/14137">https://github.com/mrdoob/three.js/issues/14137</a>'); |
| |
| function prepend(floatPrecision) { |
| let source = document.getElementById('struct-out-parameter-fs').text; |
| return 'precision ' + floatPrecision + ' float;\n' + source; |
| } |
| |
| let tests = [ |
| { |
| vShaderId: "simple-vs", |
| vShaderSuccess: true, |
| fShaderSource: prepend('lowp'), |
| fShaderSuccess: true, |
| linkSuccess: true, |
| render: true, |
| passMsg: "lowp struct used as out parameter", |
| }, |
| { |
| vShaderId: "simple-vs", |
| vShaderSuccess: true, |
| fShaderSource: prepend('mediump'), |
| fShaderSuccess: true, |
| linkSuccess: true, |
| render: true, |
| passMsg: "mediump struct used as out parameter", |
| }, |
| ]; |
| |
| let wtu = WebGLTestUtils; |
| let gl = wtu.create3DContext(); |
| let precision = gl.getShaderPrecisionFormat(gl.FRAGMENT_SHADER, gl.HIGH_FLOAT); |
| let highpSupported = (precision.rangeMin >= 62 && precision.rangeMax >= 62 && precision.precision >= 16); |
| debug("highp is" + (highpSupported ? "" : " not") + " supported in fragment shaders"); |
| |
| if (highpSupported) { |
| tests.push( |
| { |
| vShaderId: "simple-vs", |
| vShaderSuccess: true, |
| fShaderSource: prepend('highp'), |
| fShaderSuccess: true, |
| linkSuccess: true, |
| render: true, |
| passMsg: "highp struct used as out parameter", |
| } |
| ); |
| } |
| |
| GLSLConformanceTester.runTests(tests); |
| debug(""); |
| |
| var successfullyParsed = true; |
| </script> |
| </body> |
| </html> |
