diff options
Diffstat (limited to 'dom/canvas/test/webgl-conf/checkout/conformance/offscreencanvas/context-lost-worker.js')
-rw-r--r-- | dom/canvas/test/webgl-conf/checkout/conformance/offscreencanvas/context-lost-worker.js | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance/offscreencanvas/context-lost-worker.js b/dom/canvas/test/webgl-conf/checkout/conformance/offscreencanvas/context-lost-worker.js new file mode 100644 index 0000000000..75cd4b0045 --- /dev/null +++ b/dom/canvas/test/webgl-conf/checkout/conformance/offscreencanvas/context-lost-worker.js @@ -0,0 +1,35 @@ +/* +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. + if (!testValidContext()) + self.postMessage("Test failed"); + + 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) + self.postMessage("Test failed"); + + // 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()) + self.postMessage("Test passed"); + else + self.postMessage("Test failed"); + }, false); +} + |