mozilla-central/dom/canvas/test/webgl-conf/checkout/conformance/glsl/misc/struct-as-out-parameter.html (file symbol)

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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 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");
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>