Prototype: NativeLayer renderer with GL fallback

cc/surfaces/display.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 "cc/surfaces/display.h"
 
 #include "base/thread_task_runner_handle.h"
 #include "base/trace_event/trace_event.h"
 #include "cc/debug/benchmark_instrumentation.h"
 #include "cc/output/compositor_frame.h"
 #include "cc/output/compositor_frame_ack.h"
-#include "cc/output/direct_renderer.h"
 #include "cc/output/gl_renderer.h"
+#include "cc/output/native_layer_renderer.h"
+#include "cc/output/renderer_chain.h"
 #include "cc/output/renderer_settings.h"
 #include "cc/output/software_renderer.h"
 #include "cc/output/texture_mailbox_deleter.h"
 #include "cc/surfaces/display_client.h"
 #include "cc/surfaces/display_scheduler.h"
 #include "cc/surfaces/surface.h"
 #include "cc/surfaces/surface_aggregator.h"
 #include "cc/surfaces/surface_manager.h"
 #include "gpu/command_buffer/client/gles2_interface.h"
 #include "ui/gfx/buffer_types.h"
@@ skipping 81 matching lines @@
   scoped_ptr<ResourceProvider> resource_provider = ResourceProvider::Create(
       output_surface_.get(), bitmap_manager_, gpu_memory_buffer_manager_,
       nullptr, settings_.highp_threshold_min,
       settings_.texture_id_allocation_chunk_size,
       std::vector<unsigned>(static_cast<size_t>(gfx::BufferFormat::LAST) + 1,
                             GL_TEXTURE_2D));
   if (!resource_provider)
     return;
 
   if (output_surface_->context_provider()) {
-    scoped_ptr<GLRenderer> renderer = GLRenderer::Create(
+    scoped_ptr<RendererChain> renderer = RendererChain::Create();
+    renderer->AddRenderer(NativeLayerRenderer::Create(
+        this, &settings_, output_surface_.get(), resource_provider.get()));
+    renderer->AddRenderer(GLRenderer::Create(
         this, &settings_, output_surface_.get(), resource_provider.get(),
-        texture_mailbox_deleter_.get(), settings_.highp_threshold_min);
+        texture_mailbox_deleter_.get(), settings_.highp_threshold_min));
     if (!renderer)
       return;
     renderer_ = renderer.Pass();
   } else {
     scoped_ptr<SoftwareRenderer> renderer = SoftwareRenderer::Create(
         this, &settings_, output_surface_.get(), resource_provider.get());
     if (!renderer)
       return;
     renderer_ = renderer.Pass();
   }
@@ skipping 199 matching lines @@
 
   if (surface_id == current_surface_id_)
     UpdateRootSurfaceResourcesLocked();
 }
 
 SurfaceId Display::CurrentSurfaceId() {
   return current_surface_id_;
 }
 
 }  // namespace cc