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Diffstat (limited to '')
-rw-r--r-- | dom/canvas/test/webgl-conf/checkout/conformance/offscreencanvas/context-lost.html | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance/offscreencanvas/context-lost.html b/dom/canvas/test/webgl-conf/checkout/conformance/offscreencanvas/context-lost.html new file mode 100644 index 0000000000..0568ad229e --- /dev/null +++ b/dom/canvas/test/webgl-conf/checkout/conformance/offscreencanvas/context-lost.html @@ -0,0 +1,69 @@ +<!-- +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"> +<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 src="../../js/tests/canvas-tests-utils.js"></script> +<script> +function init() +{ + description("Tests behavior under a lost context for OffscreenCanvas"); + + if (!window.OffscreenCanvas) { + testPassed("No OffscreenCanvas support"); + finishTest(); + return; + } + + canvas = new OffscreenCanvas(10, 10); + gl = canvas.getContext('webgl'); + + // call testValidContext() before checking for the extension, because this is where we check + // for the isContextLost() method, which we want to do regardless of the extension's presence. + if (!testValidContext()) { + testFailed("Some tests failed"); + finishTest(); + return; + } + + extension = gl.getExtension("WEBGL_lose_context"); + // need an extension that exposes new API methods. + OES_vertex_array_object = gl.getExtension("OES_vertex_array_object"); + if (extension == null || OES_vertex_array_object == null) { + testFailed("Some tests failed"); + finishTest(); + return; + } + + // We need to initialize |uniformLocation| before losing context. + // Otherwise gl.getUniform() when context is lost will throw. + uniformLocation = gl.getUniformLocation(program, "tex"); + extension.loseContext(); + + canvas.addEventListener("webglcontextlost", function() { + if (testLostContextWithoutRestore()) { + testPassed("All tests passed"); + finishTest(); + return; + } else { + testFailed("Some tests failed"); + finishTest(); + return; + } + }, false); +} + +</script> +</head> +<body onload="init()"> +<div id="description"></div> +<div id="console"></div> +</body> +</html> |