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