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DriverInfo = (function() {
// ---------------------------------------------------------------------------
// Debug info handling
function defaultInfoFunc(str) {
console.log('Info: ' + str);
}
var gInfoFunc = defaultInfoFunc;
function setInfoFunc(func) {
gInfoFunc = func;
}
function info(str) {
gInfoFunc(str);
}
// ---------------------------------------------------------------------------
// OS and driver identification
// Stolen from dom/canvas/test/webgl/test_webgl_conformance_test_suite.html
function detectDriverInfo() {
try {
var cc = SpecialPowers.Cc;
} catch (e) {
throw 'No SpecialPowers!';
}
const Cc = SpecialPowers.Cc;
const Ci = SpecialPowers.Ci;
var doc = Cc["@mozilla.org/xmlextras/domparser;1"].createInstance(Ci.nsIDOMParser).parseFromString("<html/>", "text/html");
var canvas = doc.createElement("canvas");
canvas.width = 1;
canvas.height = 1;
var type = "";
var gl = null;
try {
gl = canvas.getContext("experimental-webgl");
} catch(e) {}
if (!gl) {
info('Failed to create WebGL context for querying driver info.');
throw 'WebGL failed';
}
var ext = gl.getExtension("WEBGL_debug_renderer_info");
// this extension is unconditionally available to chrome. No need to check.
var webglRenderer = gl.getParameter(ext.UNMASKED_RENDERER_WEBGL);
var webglVendor = gl.getParameter(ext.UNMASKED_VENDOR_WEBGL);
return [webglVendor, webglRenderer];
}
function detectOSInfo() {
try {
var cc = SpecialPowers.Cc;
} catch (e) {
throw 'No SpecialPowers!';
}
const Cc = SpecialPowers.Cc;
const Ci = SpecialPowers.Ci;
// From reftest.js:
var runtime = Cc['@mozilla.org/xre/app-info;1'].getService(Ci.nsIXULRuntime);
var os = null;
var version = null;
if (navigator.platform.indexOf('Win') == 0) {
os = OS.WINDOWS;
// code borrowed from browser/modules/test/browser_taskbar_preview.js
version = SpecialPowers.Services.sysinfo.getProperty('version');
version = parseFloat(version);
// Version 6.0 is Vista, 6.1 is 7.
} else if (navigator.platform.indexOf('Mac') == 0) {
os = OS.MAC;
var versionMatch = /Mac OS X (\d+.\d+)/.exec(navigator.userAgent);
version = versionMatch ? parseFloat(versionMatch[1]) : null;
} else if (runtime.widgetToolkit == 'gonk') {
os = OS.B2G;
} else if (navigator.appVersion.indexOf('Android') != -1) {
os = OS.ANDROID;
// From layout/tools/reftest/reftest.js:
version = SpecialPowers.Services.sysinfo.getProperty('version');
} else if (navigator.platform.indexOf('Linux') == 0) {
// Must be checked after android, as android also has a 'Linux' platform string.
os = OS.LINUX;
}
return [os, version];
}
var OS = {
WINDOWS: 'windows',
MAC: 'mac',
LINUX: 'linux',
ANDROID: 'android',
B2G: 'b2g',
};
var DRIVER = {
MESA: 'mesa',
NVIDIA: 'nvidia',
ANDROID_X86_EMULATOR: 'android x86 emulator',
ANGLE: 'angle',
};
var kOS = null;
var kOSVersion = null;
var kDriver = null;
try {
[kOS, kOSVersion] = detectOSInfo();
} catch (e) {
// Generally just fails when we don't have SpecialPowers.
}
try {
var glVendor, glRenderer;
[glVendor, glRenderer] = detectDriverInfo();
info('GL vendor: ' + glVendor);
info('GL renderer: ' + glRenderer);
if (glRenderer.includes('llvmpipe')) {
kDriver = DRIVER.MESA;
} else if (glRenderer.includes('Android Emulator')) {
kDriver = DRIVER.ANDROID_X86_EMULATOR;
} else if (glRenderer.includes('ANGLE')) {
kDriver = DRIVER.ANGLE;
} else if (glVendor.includes('NVIDIA')) {
kDriver = DRIVER.NVIDIA;
}
} catch (e) {
// detectDriverInfo is fallible where WebGL fails.
}
if (kOS) {
info('OS detected as: ' + kOS);
info(' Version: ' + kOSVersion);
} else {
info('OS not detected.');
info(' `platform`: ' + navigator.platform);
info(' `appVersion`: ' + navigator.appVersion);
info(' `userAgent`: ' + navigator.userAgent);
}
if (kDriver) {
info('GL driver detected as: ' + kDriver);
} else {
info('GL driver not detected.');
}
return {
setInfoFunc: setInfoFunc,
OS: OS,
DRIVER: DRIVER,
getOS: function() { return kOS; },
getDriver: function() { return kDriver; },
getOSVersion: function() { return kOSVersion; },
};
})();
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