Mojo multiple command buffer support and sample

mojo/examples/surfaces_app/surfaces_app.cc

 // Copyright 2014 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.
 
 #include "base/bind.h"
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
 #include "cc/surfaces/surface_id_allocator.h"
 #include "mojo/examples/surfaces_app/child.mojom.h"
 #include "mojo/examples/surfaces_app/embedder.h"
@@ skipping 26 matching lines @@
     connection->ConnectToService("mojo:mojo_surfaces_service", &surfaces_);
     surfaces_.set_client(this);
 
     size_ = gfx::Size(800, 600);
 
     viewport_->Create(Rect::From(gfx::Rect(gfx::Point(10, 10), size_)));
     viewport_->Show();
 
     child_size_ = gfx::Size(size_.width() / 3, size_.height() / 2);
     connection->ConnectToService("mojo:mojo_surfaces_child_app", &child_one_);
-    connection->ConnectToService("mojo:mojo_surfaces_child_app", &child_two_);
+    connection->ConnectToService("mojo:mojo_surfaces_child_gl_app",
+                                 &child_two_);
     child_one_->ProduceFrame(Color::From(SK_ColorBLUE),
                              Size::From(child_size_),
                              base::Bind(&SurfacesApp::ChildOneProducedFrame,
                                         base::Unretained(this)));
     child_two_->ProduceFrame(Color::From(SK_ColorGREEN),
                              Size::From(child_size_),
                              base::Bind(&SurfacesApp::ChildTwoProducedFrame,
                                         base::Unretained(this)));
     embedder_.reset(new Embedder(surfaces_.get()));
     return true;
   }
 
   void ChildOneProducedFrame(SurfaceIdPtr id) {
     child_one_id_ = id.To<cc::SurfaceId>();
-    Draw(45.0);
+    Draw(10);
   }
 
   void ChildTwoProducedFrame(SurfaceIdPtr id) {
     child_two_id_ = id.To<cc::SurfaceId>();
-    Draw(45.0);
+    Draw(10);
   }
 
-  void Draw(double rotation_degrees) {
+  void Draw(int offset) {
     if (onscreen_id_.is_null()) {
       onscreen_id_ = allocator_->GenerateId();
       CommandBufferPtr cb;
       viewport_->CreateGLES2Context(Get(&cb));
       surfaces_->CreateGLES2BoundSurface(
           cb.Pass(),
           SurfaceId::From(onscreen_id_),
           Size::From(size_));
       embedder_->SetSurfaceId(onscreen_id_);
     }
     if (child_one_id_.is_null() || child_two_id_.is_null())
       return;
+    int bounced_offset = offset;
+    if (offset > 200)
+      bounced_offset = 400 - offset;
     embedder_->ProduceFrame(
-        child_one_id_, child_two_id_, child_size_, size_, rotation_degrees);
+        child_one_id_, child_two_id_, child_size_, size_, bounced_offset);
     base::MessageLoop::current()->PostDelayedTask(
         FROM_HERE,
         base::Bind(
-            &SurfacesApp::Draw, base::Unretained(this), rotation_degrees + 2.0),
-        base::TimeDelta::FromMilliseconds(17));
+            &SurfacesApp::Draw, base::Unretained(this), (offset + 2) % 400),
+        base::TimeDelta::FromMilliseconds(50));
   }
 
   // SurfaceClient implementation.
   virtual void SetIdNamespace(uint32_t id_namespace) OVERRIDE {
     allocator_.reset(new cc::SurfaceIdAllocator(id_namespace));
-    Draw(45.0);
+    Draw(10);
   }
   virtual void ReturnResources(
       Array<ReturnedResourcePtr> resources) OVERRIDE {
     DCHECK(!resources.size());
   }
 
   // NativeViewportClient implementation
   virtual void OnCreated() OVERRIDE {}
   virtual void OnBoundsChanged(mojo::RectPtr bounds) OVERRIDE {}
   virtual void OnDestroyed(const mojo::Callback<void()>& callback) OVERRIDE {
@@ skipping 22 matching lines @@
 };
 
 }  // namespace examples
 
 // static
 ApplicationDelegate* ApplicationDelegate::Create() {
   return new examples::SurfacesApp();
 }
 
 }  // namespace mojo