Respect --enable-software-rendering flag on iOS simulators (#67576)

packages/flutter_tools/lib/src/ios/simulators.dart

@@ -423,6 +423,7 @@ class IOSSimulator extends Device {
           '--enable-checked-mode',
           '--verify-entry-points',
         ],
+        if (debuggingOptions.enableSoftwareRendering) '--enable-software-rendering',
         if (debuggingOptions.startPaused) '--start-paused',
         if (debuggingOptions.disableServiceAuthCodes) '--disable-service-auth-codes',
         if (debuggingOptions.skiaDeterministicRendering) '--skia-deterministic-rendering',

packages/flutter_tools/test/general.shard/ios/simulators_test.dart

@@ -910,6 +910,29 @@ Dec 20 17:04:32 md32-11-vm1 Another App[88374]: Ignore this text'''
       FileSystem: () => fileSystem,
       ProcessManager: () => FakeProcessManager.any(),
     });
+
+    testUsingContext('startApp respects the enable software rendering flag', () async {
+      final IOSSimulator device = IOSSimulator(
+        'x',
+        name: 'iPhone SE',
+        simulatorCategory: 'iOS 11.2',
+        simControl: simControl,
+        xcode: mockXcode,
+      );
+
+      final Directory mockDir = globals.fs.currentDirectory;
+      final IOSApp package = PrebuiltIOSApp(projectBundleId: 'incorrect', bundleName: 'name', bundleDir: mockDir);
+
+      const BuildInfo mockInfo = BuildInfo(BuildMode.debug, 'flavor', treeShakeIcons: false);
+      final DebuggingOptions mockOptions = DebuggingOptions.enabled(mockInfo, enableSoftwareRendering: true);
+      await device.startApp(package, prebuiltApplication: true, debuggingOptions: mockOptions);
+
+      verify(simControl.launch(any, any, captureAny)).captured.contains('--enable-software-rendering');
+    }, overrides: <Type, Generator>{
+      PlistParser: () => MockPlistUtils(),
+      FileSystem: () => fileSystem,
+      ProcessManager: () => FakeProcessManager.any(),
+    });
   });
 
   group('IOSDevice.isSupportedForProject', () {