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| 1 <!DOCTYPE html> | |
| 2 <html> | |
| 3 <head> | |
| 4 <meta charset="utf-8"> | |
| 5 <link rel="stylesheet" href="../resources/js-test-style.css"/> | |
| 6 <script src="../resources/js-test-pre.js"></script> | |
| 7 <script src="resources/webgl-test.js"></script> | |
| 8 <script src="resources/webgl-test-utils.js"></script> | |
| 9 <script> | |
| 10 var wtu = WebGLTestUtils; | |
| 11 var canvas; | |
| 12 var gl; | |
| 13 var shouldGenerateGLError; | |
| 14 var extension_name = "WEBKIT_lose_context"; | |
| 15 var extension; | |
| 16 var bufferObjects; | |
| 17 var program; | |
| 18 var texture; | |
| 19 var texColor = [255, 10, 20, 255]; | |
| 20 | |
| 21 function init() | |
| 22 { | |
| 23 if (window.initNonKhronosFramework) { | |
| 24 window.initNonKhronosFramework(true); | |
| 25 } | |
| 26 | |
| 27 description("Tests behavior under a restored context"); | |
| 28 | |
| 29 canvas = document.getElementById("canvas"); | |
| 30 canvas.addEventListener("webglcontextlost", testLostContext, false); | |
| 31 canvas.addEventListener("webglcontextrestored", testRestoredContext, false); | |
| 32 | |
| 33 gl = wtu.create3DContext(canvas); | |
| 34 shouldGenerateGLError = wtu.shouldGenerateGLError; | |
| 35 | |
| 36 extension = gl.getExtension(extension_name); | |
| 37 if (!extension) { | |
| 38 debug(extension_name + " extension not found."); | |
| 39 finish(); | |
| 40 return; | |
| 41 } | |
| 42 | |
| 43 testOriginalContext(); | |
| 44 extension.loseContext(); | |
| 45 } | |
| 46 | |
| 47 function testRendering() | |
| 48 { | |
| 49 gl.clearColor(0, 0, 0, 255); | |
| 50 gl.colorMask(1, 1, 1, 0); | |
| 51 gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT); | |
| 52 | |
| 53 program = wtu.setupSimpleTextureProgram(gl); | |
| 54 bufferObjects = wtu.setupUnitQuad(gl); | |
| 55 texture = wtu.createColoredTexture(gl, canvas.width, canvas.height, texColor
); | |
| 56 | |
| 57 gl.uniform1i(gl.getUniformLocation(program, "tex"), 0); | |
| 58 wtu.drawQuad(gl, [0, 0, 0, 255]); | |
| 59 | |
| 60 var compare = texColor.slice(0, 3); | |
| 61 wtu.checkCanvasRect(gl, 0, 0, canvas.width, canvas.height, compare, "shouldB
e " + compare); | |
| 62 | |
| 63 shouldBe("gl.getError()", "gl.NO_ERROR"); | |
| 64 } | |
| 65 | |
| 66 function testOriginalContext() | |
| 67 { | |
| 68 debug("Test valid context"); | |
| 69 shouldBeFalse("gl.isContextLost()"); | |
| 70 shouldBe("gl.getError()", "gl.NO_ERROR"); | |
| 71 testRendering(); | |
| 72 debug(""); | |
| 73 } | |
| 74 | |
| 75 function testLostContext() | |
| 76 { | |
| 77 debug("Test lost context"); | |
| 78 shouldBeTrue("gl.isContextLost()"); | |
| 79 shouldBe("gl.getError()", "gl.CONTEXT_LOST_WEBGL"); | |
| 80 shouldBe("gl.getError()", "gl.NO_ERROR"); | |
| 81 debug(""); | |
| 82 } | |
| 83 | |
| 84 function testResources(expected) | |
| 85 { | |
| 86 var tests = [ | |
| 87 "gl.bindTexture(gl.TEXTURE_2D, texture)", | |
| 88 "gl.useProgram(program)", | |
| 89 "gl.bindBuffer(gl.ARRAY_BUFFER, bufferObjects[0])", | |
| 90 ]; | |
| 91 | |
| 92 for (var i = 0; i < tests.length; ++i) | |
| 93 shouldGenerateGLError(gl, expected, tests[i]); | |
| 94 } | |
| 95 | |
| 96 function testRestoredContext() | |
| 97 { | |
| 98 debug("Test restored context"); | |
| 99 shouldBeFalse("gl.isContextLost()"); | |
| 100 shouldBe("gl.getError()", "gl.NO_ERROR"); | |
| 101 | |
| 102 // Validate that using old resources fails. | |
| 103 testResources(gl.INVALID_OPERATION); | |
| 104 | |
| 105 testRendering(); | |
| 106 | |
| 107 // Validate new resources created in testRendering(). | |
| 108 testResources(gl.NO_ERROR); | |
| 109 debug(""); | |
| 110 | |
| 111 finish(); | |
| 112 } | |
| 113 | |
| 114 function finish() { | |
| 115 successfullyParsed = true; | |
| 116 var epilogue = document.createElement("script"); | |
| 117 epilogue.onload = function() { | |
| 118 if (window.nonKhronosFrameworkNotifyDone) | |
| 119 window.nonKhronosFrameworkNotifyDone(); | |
| 120 }; | |
| 121 epilogue.src = "../resources/js-test-post.js"; | |
| 122 document.body.appendChild(epilogue); | |
| 123 } | |
| 124 | |
| 125 </script> | |
| 126 </head> | |
| 127 <body onload="init()"> | |
| 128 <div id="description"></div> | |
| 129 <div id="console"></div> | |
| 130 <canvas id="canvas" width="1px" height="1px"></canvas> | |
| 131 </body> | |
| 132 </html> | |
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