cc: Fork OverlayCandidate to CALayerOverlay

cc/output/direct_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/direct_renderer.h"
 
 #include <utility>
 #include <vector>
 
 #include "base/containers/hash_tables.h"
@@ skipping 180 matching lines @@
 void DirectRenderer::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", "DirectRenderer::DrawFrame");
   UMA_HISTOGRAM_COUNTS(
       "Renderer4.renderPassCount",
       base::saturated_cast<int>(render_passes_in_draw_order->size()));
 
-  const RenderPass* root_render_pass = render_passes_in_draw_order->back();
+  RenderPass* root_render_pass = render_passes_in_draw_order->back();
   DCHECK(root_render_pass);
 
   DrawingFrame frame;
   frame.render_passes_in_draw_order = render_passes_in_draw_order;
   frame.root_render_pass = root_render_pass;
   frame.root_damage_rect = Capabilities().using_partial_swap
                                ? root_render_pass->damage_rect
                                : root_render_pass->output_rect;
+  frame.root_damage_rect.Union(next_root_damage_rect_);
+  next_root_damage_rect_ = gfx::Rect();
   frame.root_damage_rect.Intersect(gfx::Rect(device_viewport_rect.size()));
   frame.device_viewport_rect = device_viewport_rect;
   frame.device_clip_rect = device_clip_rect;
   frame.disable_picture_quad_image_filtering =
       disable_picture_quad_image_filtering;
 
   EnsureBackbuffer();
 
   // Only reshape when we know we are going to draw. Otherwise, the reshape
   // can leave the window at the wrong size if we never draw and the proper
@@ skipping 12 matching lines @@
     output_surface_plane.quad_rect_in_target_space =
         root_render_pass->output_rect;
     output_surface_plane.use_output_surface_for_resource = true;
     output_surface_plane.overlay_handled = true;
     frame.overlay_list.push_back(output_surface_plane);
   }
 
   // If we have any copy requests, we can't remove any quads for overlays,
   // otherwise the framebuffer will be missing the overlay contents.
   if (root_render_pass->copy_requests.empty()) {
-    overlay_processor_->ProcessForOverlays(
-        resource_provider_, render_passes_in_draw_order, &frame.overlay_list,
-        &frame.root_damage_rect);
+    if (overlay_processor_->ProcessForCALayers(
+            resource_provider_, render_passes_in_draw_order,
+            &frame.ca_layer_overlay_list, &frame.overlay_list)) {
+      // Ensure that the next frame to use the backbuffer will do a full redraw.
+      next_root_damage_rect_.Union(root_render_pass->output_rect);
+    } else {
+      overlay_processor_->ProcessForOverlays(
+          resource_provider_, render_passes_in_draw_order, &frame.overlay_list,
+          &frame.root_damage_rect);
+    }
   }
 
   for (size_t i = 0; i < render_passes_in_draw_order->size(); ++i) {
     RenderPass* pass = render_passes_in_draw_order->at(i);
     DrawRenderPass(&frame, pass);
 
     for (ScopedPtrVector<CopyOutputRequest>::iterator it =
              pass->copy_requests.begin();
          it != pass->copy_requests.end();
          ++it) {
@@ skipping 282 matching lines @@
   ScopedResource* texture = render_pass_textures_.get(id);
   return texture && texture->id();
 }
 
 // static
 gfx::Size DirectRenderer::RenderPassTextureSize(const RenderPass* render_pass) {
   return render_pass->output_rect.size();
 }
 
 }  // namespace cc