Adding the iOS app and integration example with GlRenderer.

remoting/client/ios/app/example_view_controller.mm

-// Copyright 2016 The Chromium Authors. All rights reserved.
+// Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif
 
-#import "remoting/client/ios/example_view_controller.h"
+#import "remoting/client/ios/app/example_view_controller.h"
 
 #import "remoting/client/display/sys_opengl.h"
 
-@interface ExampleViewController()
+#include "base/message_loop/message_loop.h"
+#include "remoting/protocol/frame_stats.h"
+#include "third_party/webrtc/modules/desktop_capture/desktop_frame.h"
+#include "third_party/webrtc/modules/desktop_capture/desktop_geometry.h"
+
+@interface ExampleViewController ()
 
 // Helper functions dealing with the GL Context.
 - (void)setupGL;
 - (void)tearDownGL;
 
 @end
 
 @implementation ExampleViewController
 
 #pragma mark - UIViewController
 
 - (void)viewDidLoad {
   [super viewDidLoad];
-
-  _context = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES2];
+  _gestures = [[ClientGestures alloc] initWithView:self.view];
+  _context = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES3];

[Yuwei, 2017/01/23 21:56:15]

Are you establishing the EGL context on the main thread?

[Yuwei, 2017/01/23 21:56:15]

Does this handle the case if ES3 context is not supported? Otherwise I think you
should put a TODO

[nicholss, 2017/01/26 18:00:16]

ES3 is not supported for <=iPhone5. Not sure how many people still use this.
That device is 5 years old.

[Jamie, 2017/01/26 18:06:12]

Drive-by: We might be able to get this information from the app store.

[nicholss, 2017/01/26 18:28:40]

Looks like the iphone5 just makes the cut at continuing to be supported, will
add a TODO to fall back to ES2 if ES3 is not supported for prod code. This is
just example code so I am not going to update it for this CL.

+  _runtime = new remoting::ios::AppRuntime();
   static_cast<GLKView*>(self.view).context = _context;
-
   [self setupGL];
 }
 
 - (void)viewDidUnload {
   [super viewDidUnload];
   [self tearDownGL];
 
   if ([EAGLContext currentContext] == _context) {
     [EAGLContext setCurrentContext:nil];
   }
   _context = nil;
 }
 
 - (void)setupGL {
-  [EAGLContext setCurrentContext:_context];
+  displayHandler = [[GlDisplayHandler alloc] initWithRuntime:_runtime];
+  [displayHandler created];
 }
 
 - (void)tearDownGL {
-  [EAGLContext setCurrentContext:_context];
+  // TODO(nicholss): Implement this in a real application.
 }
 
 - (void)viewWillAppear:(BOOL)animated {
   [super viewWillAppear:animated];
 }
 
 - (void)viewDidAppear:(BOOL)animated {
+  video_renderer_ =
+      (remoting::SoftwareVideoRenderer*)[displayHandler CreateVideoRenderer]
+          .get();
 }
 
 - (void)viewWillDisappear:(BOOL)animated {
   [super viewWillDisappear:NO];
 }
 
 - (void)viewDidLayoutSubviews {
   [super viewDidLayoutSubviews];
 }
 
 #pragma mark - GLKViewDelegate
 
 // In general, avoid expensive work in this function to maximize frame rate.
 - (void)glkView:(GLKView*)view drawInRect:(CGRect)rect {
-  // Clear to give the background color.
-  glClearColor(0.0, 40.0, 0.0, 1.0);
-  glClear(GL_COLOR_BUFFER_BIT);
+  if (displayHandler) {
+    [displayHandler glkView:view drawInRect:rect];
+  }
 }
 
 @end