loop-if-loop-gradient.html (2069B)
1 <!-- 2 Copyright (c) 2019 The Khronos Group Inc. 3 Use of this source code is governed by an MIT-style license that can be 4 found in the LICENSE.txt file. 5 --> 6 7 <!DOCTYPE html> 8 <html> 9 <head> 10 <meta charset="utf-8"> 11 <title>Gradient loop in if in loop crash</title> 12 <link rel="stylesheet" href="../../../resources/js-test-style.css"/> 13 <script src="../../../js/js-test-pre.js"></script> 14 <script src="../../../js/webgl-test-utils.js"></script> 15 <script id='vshader' type='x-shader/x-vertex'> 16 precision highp float; 17 void main() { 18 gl_Position = vec4( 1.0, 1.0, 1.0, 1.0 ); 19 } 20 </script> 21 <script id='fshader' type='x-shader/x-fragment'> 22 precision mediump float; 23 uniform lowp sampler2D iChannel0; 24 25 void main(){ 26 highp float c; 27 for (mediump float i = 0.0; i <= 1.0; i++) { 28 if (gl_FragCoord.x < 0.0) { 29 for (mediump float l = 0.0; l < 2.0; l++) { // with 1 as a bound it works 30 c = texture2D(iChannel0, vec2(l), 0.0).x; 31 } 32 } 33 } 34 gl_FragColor = vec4(c, vec3(1.0)); 35 } 36 </script> 37 </head> 38 <body> 39 <div id="description"></div> 40 <div id="console"></div> 41 <script> 42 "use strict"; 43 description("This test checks an ANGLE regression that was caused by a complex ShaderToy shader. <a href='https://code.google.com/p/chromium/issues/detail?id=524297'>crbug.com/524297</a>"); 44 45 debug(""); 46 47 var wtu = WebGLTestUtils; 48 var gl = wtu.create3DContext(); 49 50 gl.canvas.addEventListener("webglcontextlost", function(e) { 51 testFailed("WebGL context lost"); 52 }); 53 54 if (!gl) { 55 testFailed("WebGL context does not exist"); 56 } else { 57 testPassed("WebGL context exists"); 58 debug(""); 59 60 var program = wtu.setupProgram(gl, ['vshader', 'fshader']); 61 if (!gl.getProgramParameter(program, gl.LINK_STATUS)) { 62 testFailed("Program failed to link"); 63 } 64 wtu.glErrorShouldBe(gl, gl.NO_ERROR, "there should be no errors"); 65 } 66 67 // Cycle through a rAF once to give any webglcontextlost events a chance to propagate 68 window.requestAnimationFrame(function() { finishTest(); }); 69 70 debug(""); 71 var successfullyParsed = true; 72 </script> 73 74 </body> 75 </html>