nested-functions-should-not-crash.html

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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.

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<!DOCTYPE html>

<html>

<head>

<meta charset="utf-8">

<title>Driver Bug - nested functions should not crash</title>

<link rel="stylesheet" href="../../../resources/js-test-style.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>

</head>

<body>

<canvas id="example" width="40" height="40"> </canvas>

<div id="description"></div>

<div id="console"></div>

<script id="vshader" type="x-shader/x-vertex">

void main(){

  gl_Position = vec4(0, 0, 0, 1);

</script>

<script id="fshaderUniformTest" type="x-shader/x-fragment">

precision mediump float;

uniform vec4 u_uniform;

$(code)

void main()

  gl_FragColor = function0();

</script>

<script>

"use strict";

var wtu = WebGLTestUtils;

var gl = wtu.create3DContext();

var fUniformTestSource = wtu.getScript("fshaderUniformTest");

var tests = [

];

var counts = [

  { count:10,

    mustPass: true,

},

  { count:100,

    mustPass: false,

},

  { count: 1000,

    mustPass: false,

},

  { count: 10000,

    mustPass: false,

},

];

var operators = ["+", "-", "/", "*"];

counts.forEach(function(info) {

  var generateCode = function(numVars) {

    var codes = [];

    codes.push("vec4 function" + numVars + "() { return u_uniform; }");

    for (var uu = 0; uu < numVars; ++uu) {

      var id = numVars - uu - 1;

      codes.push("vec4 function" + id + "() { return function" + (id + 1) + "(); }");

    return {

      code: codes.join("\n\n"),

};

};

  var subs = generateCode(info.count);

  tests.push({

    vShaderId: "vshader",

    vShaderSuccess: true,

    fShaderSource: wtu.replaceParams(fUniformTestSource, subs),

    fShaderSuccess: true,

    linkSuccess: true,

    ignoreResults: !info.mustPass,

    passMsg: "shader with " + info.count + " nested functions",

});

});

GLSLConformanceTester.runTests(tests);

</script>

</body>

</html>