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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>Uninitialized local/global variables should be initialized (ESSL 3.00 cases)</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>
<!--
This test covers cases that can't be tested with ESSL 1.00 due to Appendix A limitations.
The ESSL 1.00 cases are covered in conformance/glsl/misc/uninitialized-local-global-variables.html
-->
<script id="vs_uninit_in_frag" type="x-shader/x-vertex">#version 300 es
precision highp float;
in vec4 a_position;
void main() {
gl_Position = a_position;
}
</script>
<!-- Uninitialized variables in a for loop initializer in fragment shader -->
<script id="fs_uninit_variables_in_loop_in_frag" type="x-shader/x-fragment">#version 300 es
precision highp float;
out vec4 my_FragColor;
void main() {
int i = 0;
for (vec4 uninit, uninit2[2] = vec4[2](uninit, uninit); i < 1; ++i) {
my_FragColor = uninit2[0];
}
}
</script>
<!-- Uninitialized nameless struct in a for loop initializer in fragment shader -->
<script id="fs_uninit_nameless_struct_in_loop_in_frag" type="x-shader/x-fragment">#version 300 es
precision highp float;
out vec4 my_FragColor;
void main() {
int i = 0;
for (struct { vec4 v; } uninit; i < 1; ++i) {
my_FragColor = uninit.v;
}
}
</script>
</head>
<body>
<canvas id="canvas" width="50" height="50"></canvas>
<div id="description"></div>
<div id="console"></div>
<script>
"use strict";
description('Uninitialized local/global variables should be initialized: http://anglebug.com/1966');
var wtu = WebGLTestUtils;
var gl = wtu.create3DContext("canvas", undefined, 2);
wtu.setupUnitQuad(gl);
var cases = [
{
name: "Uninitialized variables in a for loop initializer in fragment shader",
prog: ["vs_uninit_in_frag", "fs_uninit_variables_in_loop_in_frag"],
},
{
name: "Uninitialized nameless struct in a for loop initializer in fragment shader",
prog: ["vs_uninit_in_frag", "fs_uninit_nameless_struct_in_loop_in_frag"],
}
];
function runTest() {
for (var i = 0; i < cases.length; ++i) {
debug("");
debug(cases[i].name);
var program = wtu.setupProgram(gl, cases[i].prog, ["a_position"], undefined, true);
gl.clearColor(1.0, 0.0, 0.0, 1.0);
wtu.clearAndDrawUnitQuad(gl);
wtu.checkCanvas(gl, [0, 0, 0, 0]);
}
debug("");
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "there should be no errors");
}
runTest();
var successfullyParsed = true;
</script>
<script src="../../js/js-test-post.js"></script>
</body>
</html>