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**
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** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
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-->
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Sketchfab Lighting Shader 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 id='vshader1' type='x-shader/x-vertex'>
attribute float testValue; // Can be uniform as well.
varying mediump float FragVarying; // Necessary to reproduce.
void main() {
// Crashes with mat4 as well. Does not crash with vectors.
mat2 projectionMatrix = mat2(0.0, 0.0, 0.0, 0.0);
if (testValue == 1.0)
{
// Using the matrix variable appears necessary.
projectionMatrix[0][0] = 1.0;
}
FragVarying = 0.0;
// Referencing the matrix is necessary though clearly the compiler
// doesn't realize the assignment is useless.
gl_Position = vec4(projectionMatrix[1][0], 0.0, 0.0, 1.0);
}
</script>
<script id='fshader1' type='x-shader/x-fragment'>
precision mediump float;
varying float FragVarying;
void main() {
gl_FragColor = vec4(FragVarying, 0.0, 0.0, 1.0);
}
</script>
</head>
<body>
<div id="description"></div>
<div id="console"></div>
<script>
"use strict";
description("This test demonstrates a crash on the Nexus 5 (Adreno 330) when compiling Sketchfab's lighting shader. <a href='https://code.google.com/p/chromium/issues/detail?id=551937'>crbug.com/551937</a>");
debug("");
var wtu = WebGLTestUtils;
var gl = wtu.create3DContext();
gl.canvas.addEventListener("webglcontextlost", function(e) {
testFailed("WebGL context lost");
});
if (!gl) {
testFailed("WebGL context does not exist");
} else {
testPassed("WebGL context exists");
debug("");
var program1 = wtu.setupProgram(gl, ['vshader1', 'fshader1']);
if (!gl.getProgramParameter(program1, gl.LINK_STATUS)) {
testFailed("Program failed to link");
} else {
testPassed("Program linked successfully");
}
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "there should be no errors");
debug("");
}
// Cycle through rAF a few times to give any webglcontextlost events a chance to propagate.
wtu.waitForComposite(function() { finishTest(); });
debug("");
var successfullyParsed = true;
</script>
</body>
</html>
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