fragment-shader-loop-crash.html

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<title>Fragment shader containing loop should not crash</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>

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<script src="../../js/glsl-conformance-test.js"></script>

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

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<script id="vshader" type="x-shader/x-vertex">#version 300 es

precision highp float;

out vec2 v_tex_coord;

uniform mat4 matrix;

void main() {

   v_tex_coord = vec2(0.0, 0.0);

   gl_Position = vec4(0.0, 0.0, 0.0, 0.0);

</script>

<script id="fshader" type="x-shader/x-fragment">#version 300 es

precision highp float;

in vec2 v_tex_coord;

out vec4 out_color;

uniform sampler2D texture_1;

uniform vec2 resolution;

vec4 do_loops(vec4 z)

    vec4 v[16];

    for (int i = 0; i < 16; i++)

        v[i] = z;

    return v[1];

void main() {

    out_color = do_loops(vec4(0.2, 0.4, 0.6, 1.0)) - texture(texture_1, v_tex_coord);

</script>

<script type="application/javascript">

"use strict";

description();

const wtu = WebGLTestUtils;

const tests = [

        vShaderSource: wtu.getScript('vshader'),

        fShaderSource: wtu.getScript('fshader'),

        vShaderSuccess: true,

        fShaderSuccess: true,

        linkSuccess: true,

        passMsg: 'Fragment shader containing a simple loop should compile and link'

];

GLSLConformanceTester.runTests(tests, 2);

</script>

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