<!--

/*
** Copyright (c) 2012 The Khronos Group Inc.
**
** Permission is hereby granted, free of charge, to any person obtaining a
** copy of this software and/or associated documentation files (the
** "Materials"), to deal in the Materials without restriction, including
** without limitation the rights to use, copy, modify, merge, publish,
** distribute, sublicense, and/or sell copies of the Materials, and to
** permit persons to whom the Materials are furnished to do so, subject to
** the following conditions:
**
** The above copyright notice and this permission notice shall be included
** in all copies or substantial portions of the Materials.
**
** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
*/

-->

<!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="../../../resources/js-test-pre.js"></script>
<script src="../../resources/webgl-test-utils.js"></script>
<script src="../../resources/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>

