Source code
Revision control
Copy as Markdown
Other Tools
/*
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.
*/
importScripts("../../js/tests/canvas-tests-utils.js");
self.onmessage = function(e) {
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.
self.postMessage({fail: !testValidContext(), msg: "testValidContext()"});
WEBGL_lose_context = gl.getExtension("WEBGL_lose_context");
self.postMessage({fail: !WEBGL_lose_context, msg: "WEBGL_lose_context"});
// need an extension that exposes new API methods.
OES_vertex_array_object = gl.getExtension("OES_vertex_array_object");
self.postMessage({fail: !OES_vertex_array_object, msg: "OES_vertex_array_object"});
// We need to initialize |uniformLocation| before losing context.
// Otherwise gl.getUniform() when context is lost will throw.
uniformLocation = gl.getUniformLocation(program, "tex");
WEBGL_lose_context.loseContext();
canvas.addEventListener("webglcontextlost", function() {
self.postMessage({fail: !testLostContextWithoutRestore(), msg: "testLostContextWithoutRestore()",
finishTest:true});
}, false);
}