This test checks getParameter returns strings in the correct format On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". Canvas.getContext PASS context exists PASS getParameter(gl.VERSION) correctly started with WebGL 1.0 PASS getParameter(gl.SHADING_LANGUAGE_VERSION) correctly started with WebGL GLSL ES 1.0 PASS gl.getParameter(gl.VENDOR) is non-null. PASS gl.getParameter(gl.RENDERER) is non-null. PASS gl.getError() is gl.NO_ERROR PASS successfullyParsed is true TEST COMPLETE