blimp: Set up the CompositorDependencies for blimp in Chrome.

blimp/client/support/compositor/compositor_dependencies_impl.cc

 // Copyright 2016 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 "blimp/client/support/compositor/compositor_dependencies_impl.h"
 
 #include "blimp/client/support/compositor/blimp_context_provider.h"
 #include "blimp/client/support/compositor/blimp_gpu_memory_buffer_manager.h"
 #include "blimp/client/support/compositor/blimp_layer_tree_settings.h"
 #include "cc/output/context_provider.h"
 #include "cc/surfaces/surface_manager.h"
 #include "cc/trees/layer_tree_settings.h"
 
-#if defined(OS_ANDROID)
-#include "ui/gfx/android/device_display_info.h"
-#endif
-
 namespace blimp {
 namespace client {
 
 CompositorDependenciesImpl::CompositorDependenciesImpl()
     : gpu_memory_buffer_manager_(
           base::MakeUnique<BlimpGpuMemoryBufferManager>()),
       surface_manager_(base::MakeUnique<cc::SurfaceManager>()),
       next_surface_id_(0) {}
 
 CompositorDependenciesImpl::~CompositorDependenciesImpl() = default;
 
-cc::LayerTreeSettings* CompositorDependenciesImpl::GetLayerTreeSettings() {
-  if (!settings_) {
-    settings_ = base::MakeUnique<cc::LayerTreeSettings>();
-
-    PopulateCommonLayerTreeSettings(settings_.get());
-    settings_->abort_commit_before_output_surface_creation = false;
-    settings_->renderer_settings.buffer_to_texture_target_map =
-        BlimpGpuMemoryBufferManager::GetDefaultBufferToTextureTargetMap();
-    settings_->use_output_surface_begin_frame_source = true;
-
-    int default_tile_size = 256;
-#if defined(OS_ANDROID)
-    gfx::DeviceDisplayInfo info;
-    bool real_size_supported = true;
-    int display_width = info.GetPhysicalDisplayWidth();
-    int display_height = info.GetPhysicalDisplayHeight();
-    if (display_width == 0 || display_height == 0) {
-      real_size_supported = false;
-      display_width = info.GetDisplayWidth();
-      display_height = info.GetDisplayHeight();
-    }
-
-    int portrait_width = std::min(display_width, display_height);
-    int landscape_width = std::max(display_width, display_height);
-
-    if (real_size_supported) {
-      // Maximum HD dimensions should be 768x1280
-      // Maximum FHD dimensions should be 1200x1920
-      if (portrait_width > 768 || landscape_width > 1280)
-        default_tile_size = 384;
-      if (portrait_width > 1200 || landscape_width > 1920)
-        default_tile_size = 512;
-
-      // Adjust for some resolutions that barely straddle an extra
-      // tile when in portrait mode. This helps worst case scroll/raster
-      // by not needing a full extra tile for each row.
-      if (default_tile_size == 256 && portrait_width == 768)
-        default_tile_size += 32;
-      if (default_tile_size == 384 && portrait_width == 1200)
-        default_tile_size += 32;
-    } else {
-      // We don't know the exact resolution due to screen controls etc.
-      // So this just estimates the values above using tile counts.
-      int numTiles = (display_width * display_height) / (256 * 256);
-      if (numTiles > 16)
-        default_tile_size = 384;
-      if (numTiles >= 40)
-        default_tile_size = 512;
-    }
-#endif
-    settings_->default_tile_size.SetSize(default_tile_size, default_tile_size);
-  }
-
-  return settings_.get();
-}
-
 gpu::GpuMemoryBufferManager*
 CompositorDependenciesImpl::GetGpuMemoryBufferManager() {
   return gpu_memory_buffer_manager_.get();
 }
 
 cc::SurfaceManager* CompositorDependenciesImpl::GetSurfaceManager() {
   return surface_manager_.get();
 }
 
-uint32_t CompositorDependenciesImpl::AllocateSurfaceId() {
+uint32_t CompositorDependenciesImpl::AllocateSurfaceClientId() {
   return ++next_surface_id_;
 }
 
-void CompositorDependenciesImpl::GetContextProvider(
+void CompositorDependenciesImpl::GetContextProviders(
     const CompositorDependencies::ContextProviderCallback& callback) {
-  scoped_refptr<cc::ContextProvider> provider = BlimpContextProvider::Create(
-      gfx::kNullAcceleratedWidget, gpu_memory_buffer_manager_.get());
-  callback.Run(provider);
+  scoped_refptr<cc::ContextProvider> compositor_context =
+      BlimpContextProvider::Create(gfx::kNullAcceleratedWidget,
+                                   gpu_memory_buffer_manager_.get());
+
+  // TODO(khushalsagar): Make a worker context and bind to the current thread.
+  callback.Run(compositor_context, nullptr);
 }
 
 }  // namespace client
 }  // namespace blimp