The Tor Browser: content/canvas/test/webgl-mochitest/driver-info.js@6474c204b198 (annotated)

content/canvas/test/webgl-mochitest/driver-info.js@6474c204b198 (annotated)

content/canvas/test/webgl-mochitest/driver-info.js

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 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 content/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.contains('llvmpipe')) {
       kDriver = DRIVER.MESA;
     } else if (glRenderer.contains('Android Emulator')) {
       kDriver = DRIVER.ANDROID_X86_EMULATOR;
     } else if (glRenderer.contains('ANGLE')) {
       kDriver = DRIVER.ANGLE;
     } else if (glVendor.contains('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; },
   };
 })();