Revert "Delete CC."

cc/output/delegating_renderer.cc

+// Copyright 2012 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/output/delegating_renderer.h"
+
+#include <set>
+#include <string>
+#include <vector>
+
+#include "base/trace_event/trace_event.h"
+#include "cc/output/compositor_frame_ack.h"
+#include "cc/output/context_provider.h"
+#include "cc/quads/draw_quad.h"
+#include "cc/quads/render_pass.h"
+#include "cc/resources/resource_provider.h"
+#include "gpu/command_buffer/client/context_support.h"
+#include "gpu/command_buffer/client/gles2_interface.h"
+
+
+namespace cc {
+
+scoped_ptr<DelegatingRenderer> DelegatingRenderer::Create(
+    RendererClient* client,
+    const RendererSettings* settings,
+    OutputSurface* output_surface,
+    ResourceProvider* resource_provider) {
+  return make_scoped_ptr(new DelegatingRenderer(
+      client, settings, output_surface, resource_provider));
+}
+
+DelegatingRenderer::DelegatingRenderer(RendererClient* client,
+                                       const RendererSettings* settings,
+                                       OutputSurface* output_surface,
+                                       ResourceProvider* resource_provider)
+    : Renderer(client, settings),
+      output_surface_(output_surface),
+      resource_provider_(resource_provider) {
+  DCHECK(resource_provider_);
+
+  capabilities_.using_partial_swap = false;
+  capabilities_.max_texture_size = resource_provider_->max_texture_size();
+  capabilities_.best_texture_format = resource_provider_->best_texture_format();
+  capabilities_.allow_partial_texture_updates =
+      output_surface->capabilities().can_force_reclaim_resources;
+
+  if (!output_surface_->context_provider()) {
+    capabilities_.using_shared_memory_resources = true;
+  } else {
+    const ContextProvider::Capabilities& caps =
+        output_surface_->context_provider()->ContextCapabilities();
+
+    DCHECK(!caps.gpu.iosurface || caps.gpu.texture_rectangle);
+
+    capabilities_.using_egl_image = caps.gpu.egl_image_external;
+    capabilities_.using_image = caps.gpu.image;
+
+    capabilities_.allow_rasterize_on_demand = false;
+  }
+}
+
+DelegatingRenderer::~DelegatingRenderer() {}
+
+const RendererCapabilitiesImpl& DelegatingRenderer::Capabilities() const {
+  return capabilities_;
+}
+
+static ResourceProvider::ResourceId AppendToArray(
+    ResourceProvider::ResourceIdArray* array,
+    ResourceProvider::ResourceId id) {
+  array->push_back(id);
+  return id;
+}
+
+void DelegatingRenderer::DrawFrame(RenderPassList* render_passes_in_draw_order,
+                                   float device_scale_factor,
+                                   const gfx::Rect& device_viewport_rect,
+                                   const gfx::Rect& device_clip_rect,
+                                   bool disable_picture_quad_image_filtering) {
+  TRACE_EVENT0("cc", "DelegatingRenderer::DrawFrame");
+
+  DCHECK(!delegated_frame_data_);
+
+  delegated_frame_data_ = make_scoped_ptr(new DelegatedFrameData);
+  DelegatedFrameData& out_data = *delegated_frame_data_;
+  out_data.device_scale_factor = device_scale_factor;
+  // Move the render passes and resources into the |out_frame|.
+  out_data.render_pass_list.swap(*render_passes_in_draw_order);
+
+  // Collect all resource ids in the render passes into a ResourceIdArray.
+  ResourceProvider::ResourceIdArray resources;
+  DrawQuad::ResourceIteratorCallback append_to_array =
+      base::Bind(&AppendToArray, &resources);
+  for (const auto& render_pass : out_data.render_pass_list) {
+    for (const auto& quad : render_pass->quad_list)
+      quad->IterateResources(append_to_array);
+  }
+  resource_provider_->PrepareSendToParent(resources, &out_data.resource_list);
+}
+
+void DelegatingRenderer::SwapBuffers(const CompositorFrameMetadata& metadata) {
+  TRACE_EVENT0("cc,benchmark", "DelegatingRenderer::SwapBuffers");
+  CompositorFrame compositor_frame;
+  compositor_frame.metadata = metadata;
+  compositor_frame.delegated_frame_data = delegated_frame_data_.Pass();
+  output_surface_->SwapBuffers(&compositor_frame);
+}
+
+void DelegatingRenderer::ReceiveSwapBuffersAck(
+    const CompositorFrameAck& ack) {
+  resource_provider_->ReceiveReturnsFromParent(ack.resources);
+}
+
+void DelegatingRenderer::DidChangeVisibility() {
+  ContextProvider* context_provider = output_surface_->context_provider();
+  if (!visible()) {
+    TRACE_EVENT0("cc", "DelegatingRenderer::SetVisible dropping resources");
+    resource_provider_->ReleaseCachedData();
+    if (context_provider) {
+      context_provider->DeleteCachedResources();
+      context_provider->ContextGL()->Flush();
+    }
+  }
+  // We loop visibility to the GPU process, since that's what manages memory.
+  // That will allow it to feed us with memory allocations that we can act
+  // upon.
+  if (context_provider)
+    context_provider->ContextSupport()->SetSurfaceVisible(visible());
+}
+
+}  // namespace cc