Avoid Copying damage rect when using Overlays

cc/output/overlay_unittest.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/base/region.h"
 #include "cc/base/scoped_ptr_vector.h"
 #include "cc/output/compositor_frame_metadata.h"
 #include "cc/output/gl_renderer.h"
 #include "cc/output/output_surface.h"
 #include "cc/output/output_surface_client.h"
@@ skipping 348 matching lines @@
     overlay_processor_.reset(new OverlayProcessor(output_surface_.get()));
     overlay_processor_->Initialize();
   }
 
   scoped_refptr<TestContextProvider> provider_;
   scoped_ptr<OverlayOutputSurface> output_surface_;
   FakeOutputSurfaceClient client_;
   scoped_ptr<SharedBitmapManager> shared_bitmap_manager_;
   scoped_ptr<ResourceProvider> resource_provider_;
   scoped_ptr<OverlayProcessor> overlay_processor_;
+  gfx::Rect damage_rect_;
 };
 
 typedef OverlayTest<SingleOnTopOverlayValidator> SingleOverlayOnTopTest;
 typedef OverlayTest<UnderlayOverlayValidator> UnderlayTest;
 typedef OverlayTest<SandwichOverlayValidator> SandwichTest;
 typedef OverlayTest<AllOrNothingOverlayValidator> AllOrNothingOverlayTest;
 
 TEST(OverlayTest, NoOverlaysByDefault) {
   scoped_refptr<TestContextProvider> provider = TestContextProvider::Create();
   OverlayOutputSurface output_surface(provider);
@@ skipping 33 matching lines @@
                              pass->shared_quad_state_list.back(), pass.get());
   CreateFullscreenOpaqueQuad(resource_provider_.get(),
                              pass->shared_quad_state_list.back(), pass.get());
 
   RenderPassList pass_list;
   pass_list.push_back(pass.Pass());
 
   // Check for potential candidates.
   OverlayCandidateList candidate_list;
   overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
-                                         &candidate_list);
+                                         &candidate_list, &damage_rect_);
 
   ASSERT_EQ(1U, pass_list.size());
   ASSERT_EQ(1U, candidate_list.size());
 
   RenderPass* main_pass = pass_list.back();
   // Check that the quad is gone.
   EXPECT_EQ(2U, main_pass->quad_list.size());
   const QuadList& quad_list = main_pass->quad_list;
   for (QuadList::ConstBackToFrontIterator it = quad_list.BackToFrontBegin();
        it != quad_list.BackToFrontEnd(); ++it) {
@@ skipping 21 matching lines @@
                              pass->shared_quad_state_list.back(), pass.get());
   CreateFullscreenOpaqueQuad(resource_provider_.get(),
                              pass->shared_quad_state_list.back(), pass.get());
 
   RenderPassList pass_list;
   pass_list.push_back(pass.Pass());
 
   // Check for potential candidates.
   OverlayCandidateList candidate_list;
   overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
-                                         &candidate_list);
+                                         &candidate_list, &damage_rect_);
 
   // Ensure that the display and uv rects have cropping applied to them.
   ASSERT_EQ(1U, pass_list.size());
   ASSERT_EQ(1U, candidate_list.size());
   EXPECT_EQ(candidate_id, candidate_list[0].resource_id);
   EXPECT_EQ(gfx::RectF(0.f, 32.f, 64.f, 64.f), candidate_list[0].display_rect);
   EXPECT_EQ(gfx::RectF(0.f, 0.25f, 0.5f, 0.5f), candidate_list[0].uv_rect);
 }
 
 TEST_F(SandwichTest, SuccessfulTwoOverlays) {
   scoped_ptr<RenderPass> pass = CreateRenderPass();
 
   // Add two non-overlapping candidates.
   CreateCandidateQuadAt(resource_provider_.get(),
                         pass->shared_quad_state_list.back(), pass.get(),
                         kOverlayTopLeftRect);
   CreateCandidateQuadAt(resource_provider_.get(),
                         pass->shared_quad_state_list.back(), pass.get(),
                         kOverlayBottomRightRect);
 
   // Add something behind it.
   CreateFullscreenOpaqueQuad(resource_provider_.get(),
                              pass->shared_quad_state_list.back(), pass.get());
 
   RenderPassList pass_list;
   pass_list.push_back(pass.Pass());
   OverlayCandidateList candidate_list;
   overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
-                                         &candidate_list);
+                                         &candidate_list, &damage_rect_);
 
   // Both candidates should become overlays.
   EXPECT_EQ(1u, pass_list.size());
   EXPECT_EQ(2u, candidate_list.size());
   EXPECT_EQ(gfx::RectF(kOverlayTopLeftRect), candidate_list[0].display_rect);
   EXPECT_EQ(gfx::RectF(kOverlayBottomRightRect),
             candidate_list[1].display_rect);
 
   // The overlay quads should be gone.
   const QuadList& quad_list = pass_list.back()->quad_list;
@@ skipping 13 matching lines @@
                         kOverlayRect);
 
   // Add something behind it.
   CreateFullscreenOpaqueQuad(resource_provider_.get(),
                              pass->shared_quad_state_list.back(), pass.get());
 
   RenderPassList pass_list;
   pass_list.push_back(pass.Pass());
   OverlayCandidateList candidate_list;
   overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
-                                         &candidate_list);
+                                         &candidate_list, &damage_rect_);
 
   // Only one of the candidates should become an overlay.
   EXPECT_EQ(1u, pass_list.size());
   EXPECT_EQ(1u, candidate_list.size());
   EXPECT_EQ(gfx::RectF(kOverlayTopLeftRect), candidate_list[0].display_rect);
 
   // One of the overlay quads should be gone.
   const QuadList& quad_list = pass_list.back()->quad_list;
   EXPECT_EQ(2u, quad_list.size());
   EXPECT_EQ(DrawQuad::TEXTURE_CONTENT, quad_list.front()->material);
@@ skipping 14 matching lines @@
   CreateOpaqueQuadAt(resource_provider_.get(),
                      pass->shared_quad_state_list.back(), pass.get(),
                      gfx::Rect(kDisplaySize));
 
   RenderPassList pass_list;
   pass_list.push_back(pass.Pass());
 
   // Check for potential candidates.
   OverlayCandidateList candidate_list;
   overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
-                                         &candidate_list);
-
+                                         &candidate_list, &damage_rect_);
   ASSERT_EQ(1U, pass_list.size());
   ASSERT_EQ(2U, candidate_list.size());
 
   RenderPass* main_pass = pass_list.back();
   // Check that the quad is gone.
   EXPECT_EQ(3U, main_pass->quad_list.size());
   const QuadList& quad_list = main_pass->quad_list;
   for (QuadList::ConstBackToFrontIterator it = quad_list.BackToFrontBegin();
        it != quad_list.BackToFrontEnd(); ++it) {
     EXPECT_NE(DrawQuad::TEXTURE_CONTENT, it->material);
@@ skipping 34 matching lines @@
                      gfx::Rect(kDisplaySize));
 
   RenderPassList pass_list;
   pass_list.push_back(pass.Pass());
 
   // Run the overlay strategy on that input.
   RenderPass* main_pass = pass_list.back();
   OverlayCandidateList candidate_list;
   EXPECT_EQ(4U, main_pass->quad_list.size());
   overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
-                                         &candidate_list);
+                                         &candidate_list, &damage_rect_);
   ASSERT_EQ(1U, pass_list.size());
   ASSERT_EQ(3U, candidate_list.size());
 
   // Check that the candidate quad is gone and that we now have two transparent
   // quads for the same region that was covered on the overlay.
   EXPECT_EQ(5U, main_pass->quad_list.size());
   const QuadList& quad_list = main_pass->quad_list;
   Region transparent_quad_region;
   for (QuadList::ConstBackToFrontIterator it = quad_list.BackToFrontBegin();
        it != quad_list.BackToFrontEnd(); ++it) {
@@ skipping 11 matching lines @@
   EXPECT_EQ(candidate_id, candidate_list[0].resource_id);
   EXPECT_EQ(gfx::RectF(64.f, 64.f), candidate_list[0].display_rect);
   EXPECT_TRUE(candidate_list[1].use_output_surface_for_resource);
   EXPECT_TRUE(candidate_list[2].use_output_surface_for_resource);
   Region overlay_region;
   overlay_region.Union(gfx::ToEnclosingRect(candidate_list[1].display_rect));
   overlay_region.Union(gfx::ToEnclosingRect(candidate_list[2].display_rect));
   DCHECK(covered_region == overlay_region);
 }
 
+TEST_F(SandwichTest, DamageRect) {
+  scoped_ptr<RenderPass> pass = CreateRenderPass();
+  CreateFullscreenCandidateQuad(resource_provider_.get(),
+                                pass->shared_quad_state_list.back(),
+                                pass.get());
+
+  damage_rect_ = kOverlayRect;
+
+  // Add something behind it.
+  CreateFullscreenOpaqueQuad(resource_provider_.get(),
+                             pass->shared_quad_state_list.back(), pass.get());
+  CreateFullscreenOpaqueQuad(resource_provider_.get(),
+                             pass->shared_quad_state_list.back(), pass.get());
+
+  RenderPassList pass_list;
+  pass_list.push_back(pass.Pass());
+
+  // Check for potential candidates.
+  OverlayCandidateList candidate_list;
+
+  // Primary plane.
+  OverlayCandidate output_surface_plane;
+  output_surface_plane.display_rect = gfx::RectF(kOverlayRect);
+  output_surface_plane.quad_rect_in_target_space = kOverlayRect;
+  output_surface_plane.use_output_surface_for_resource = true;
+  output_surface_plane.overlay_handled = true;
+  candidate_list.push_back(output_surface_plane);
+
+  overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
+                                         &candidate_list, &damage_rect_);
+  DCHECK(!damage_rect_.IsEmpty());
+}
+
 TEST_F(SingleOverlayOnTopTest, SuccessfullOverlay) {
   scoped_ptr<RenderPass> pass = CreateRenderPass();
   TextureDrawQuad* original_quad =
       CreateFullscreenCandidateQuad(resource_provider_.get(),
                                     pass->shared_quad_state_list.back(),
                                     pass.get());
   unsigned original_resource_id = original_quad->resource_id();
 
   // Add something behind it.
   CreateFullscreenOpaqueQuad(resource_provider_.get(),
                              pass->shared_quad_state_list.back(), pass.get());
   CreateFullscreenOpaqueQuad(resource_provider_.get(),
                              pass->shared_quad_state_list.back(), pass.get());
 
   RenderPassList pass_list;
   pass_list.push_back(pass.Pass());
 
   // Check for potential candidates.
   OverlayCandidateList candidate_list;
   overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
-                                         &candidate_list);
+                                         &candidate_list, &damage_rect_);
 
   ASSERT_EQ(1U, pass_list.size());
   ASSERT_EQ(1U, candidate_list.size());
 
   RenderPass* main_pass = pass_list.back();
   // Check that the quad is gone.
   EXPECT_EQ(2U, main_pass->quad_list.size());
   const QuadList& quad_list = main_pass->quad_list;
   for (QuadList::ConstBackToFrontIterator it = quad_list.BackToFrontBegin();
        it != quad_list.BackToFrontEnd();
        ++it) {
     EXPECT_NE(DrawQuad::TEXTURE_CONTENT, it->material);
   }
 
   // Check that the right resource id got extracted.
   EXPECT_EQ(original_resource_id, candidate_list.back().resource_id);
 }
 
+TEST_F(SingleOverlayOnTopTest, DamageRect) {
+  scoped_ptr<RenderPass> pass = CreateRenderPass();
+  CreateFullscreenCandidateQuad(resource_provider_.get(),
+                                pass->shared_quad_state_list.back(),
+                                pass.get());
+  damage_rect_ = kOverlayRect;
+
+  // Add something behind it.
+  CreateFullscreenOpaqueQuad(resource_provider_.get(),
+                             pass->shared_quad_state_list.back(), pass.get());
+  CreateFullscreenOpaqueQuad(resource_provider_.get(),
+                             pass->shared_quad_state_list.back(), pass.get());
+
+  RenderPassList pass_list;
+  pass_list.push_back(pass.Pass());
+
+  // Check for potential candidates.
+  OverlayCandidateList candidate_list;
+
+  // Primary plane.
+  OverlayCandidate output_surface_plane;
+  output_surface_plane.display_rect = gfx::RectF(kOverlayRect);
+  output_surface_plane.quad_rect_in_target_space = kOverlayRect;
+  output_surface_plane.use_output_surface_for_resource = true;
+  output_surface_plane.overlay_handled = true;
+  candidate_list.push_back(output_surface_plane);
+
+  overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
+                                         &candidate_list, &damage_rect_);
+  DCHECK(damage_rect_.IsEmpty());
+}
+
 TEST_F(SingleOverlayOnTopTest, NoCandidates) {
   scoped_ptr<RenderPass> pass = CreateRenderPass();
   CreateFullscreenOpaqueQuad(resource_provider_.get(),
                              pass->shared_quad_state_list.back(), pass.get());
   CreateFullscreenOpaqueQuad(resource_provider_.get(),
                              pass->shared_quad_state_list.back(), pass.get());
 
   RenderPassList pass_list;
   pass_list.push_back(pass.Pass());
 
   RenderPassList original_pass_list;
   RenderPass::CopyAll(pass_list, &original_pass_list);
 
   OverlayCandidateList candidate_list;
   overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
-                                         &candidate_list);
+                                         &candidate_list, &damage_rect_);
   EXPECT_EQ(0U, candidate_list.size());
   // There should be nothing new here.
   CompareRenderPassLists(pass_list, original_pass_list);
 }
 
 TEST_F(SingleOverlayOnTopTest, OccludedCandidates) {
   scoped_ptr<RenderPass> pass = CreateRenderPass();
   CreateFullscreenOpaqueQuad(resource_provider_.get(),
                              pass->shared_quad_state_list.back(), pass.get());
   CreateFullscreenOpaqueQuad(resource_provider_.get(),
                              pass->shared_quad_state_list.back(), pass.get());
 
   CreateFullscreenCandidateQuad(resource_provider_.get(),
                                 pass->shared_quad_state_list.back(),
                                 pass.get());
 
   RenderPassList pass_list;
   pass_list.push_back(pass.Pass());
 
   RenderPassList original_pass_list;
   RenderPass::CopyAll(pass_list, &original_pass_list);
 
   OverlayCandidateList candidate_list;
   overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
-                                         &candidate_list);
+                                         &candidate_list, &damage_rect_);
   EXPECT_EQ(0U, candidate_list.size());
   // There should be nothing new here.
   CompareRenderPassLists(pass_list, original_pass_list);
 }
 
 // Test with multiple render passes.
 TEST_F(SingleOverlayOnTopTest, MultipleRenderPasses) {
   RenderPassList pass_list;
   pass_list.push_back(CreateRenderPass());
 
   scoped_ptr<RenderPass> pass = CreateRenderPass();
   CreateFullscreenCandidateQuad(resource_provider_.get(),
                                 pass->shared_quad_state_list.back(),
                                 pass.get());
 
   // Add something behind it.
   CreateFullscreenOpaqueQuad(resource_provider_.get(),
                              pass->shared_quad_state_list.back(), pass.get());
   CreateFullscreenOpaqueQuad(resource_provider_.get(),
                              pass->shared_quad_state_list.back(), pass.get());
 
   pass_list.push_back(pass.Pass());
 
   RenderPassList original_pass_list;
   RenderPass::CopyAll(pass_list, &original_pass_list);
 
   // Check for potential candidates.
   OverlayCandidateList candidate_list;
   overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
-                                         &candidate_list);
+                                         &candidate_list, &damage_rect_);
   EXPECT_EQ(1U, candidate_list.size());
 
   // This should be the same.
   ASSERT_EQ(2U, pass_list.size());
 }
 
 TEST_F(SingleOverlayOnTopTest, RejectPremultipliedAlpha) {
   scoped_ptr<RenderPass> pass = CreateRenderPass();
   TextureDrawQuad* quad =
       CreateFullscreenCandidateQuad(resource_provider_.get(),
                                     pass->shared_quad_state_list.back(),
                                     pass.get());
   quad->premultiplied_alpha = true;
 
   RenderPassList pass_list;
   pass_list.push_back(pass.Pass());
   OverlayCandidateList candidate_list;
   overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
-                                         &candidate_list);
+                                         &candidate_list, &damage_rect_);
   EXPECT_EQ(1U, pass_list.size());
   EXPECT_EQ(0U, candidate_list.size());
 }
 
 TEST_F(SingleOverlayOnTopTest, RejectBlending) {
   scoped_ptr<RenderPass> pass = CreateRenderPass();
   TextureDrawQuad* quad =
       CreateFullscreenCandidateQuad(resource_provider_.get(),
                                     pass->shared_quad_state_list.back(),
                                     pass.get());
   quad->needs_blending = true;
 
   RenderPassList pass_list;
   pass_list.push_back(pass.Pass());
   OverlayCandidateList candidate_list;
   overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
-                                         &candidate_list);
+                                         &candidate_list, &damage_rect_);
   ASSERT_EQ(1U, pass_list.size());
   EXPECT_EQ(0U, candidate_list.size());
 }
 
 TEST_F(SingleOverlayOnTopTest, RejectBackgroundColor) {
   scoped_ptr<RenderPass> pass = CreateRenderPass();
   TextureDrawQuad* quad =
       CreateFullscreenCandidateQuad(resource_provider_.get(),
                                     pass->shared_quad_state_list.back(),
                                     pass.get());
   quad->background_color = SK_ColorBLACK;
 
   RenderPassList pass_list;
   pass_list.push_back(pass.Pass());
   OverlayCandidateList candidate_list;
   overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
-                                         &candidate_list);
+                                         &candidate_list, &damage_rect_);
   ASSERT_EQ(1U, pass_list.size());
   EXPECT_EQ(0U, candidate_list.size());
 }
 
 TEST_F(SingleOverlayOnTopTest, RejectBlendMode) {
   scoped_ptr<RenderPass> pass = CreateRenderPass();
   CreateFullscreenCandidateQuad(resource_provider_.get(),
                                 pass->shared_quad_state_list.back(),
                                 pass.get());
   pass->shared_quad_state_list.back()->blend_mode = SkXfermode::kScreen_Mode;
 
   RenderPassList pass_list;
   pass_list.push_back(pass.Pass());
   OverlayCandidateList candidate_list;
   overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
-                                         &candidate_list);
+                                         &candidate_list, &damage_rect_);
   ASSERT_EQ(1U, pass_list.size());
   EXPECT_EQ(0U, candidate_list.size());
 }
 
 TEST_F(SingleOverlayOnTopTest, RejectOpacity) {
   scoped_ptr<RenderPass> pass = CreateRenderPass();
   CreateFullscreenCandidateQuad(resource_provider_.get(),
                                 pass->shared_quad_state_list.back(),
                                 pass.get());
   pass->shared_quad_state_list.back()->opacity = 0.5f;
 
   RenderPassList pass_list;
   pass_list.push_back(pass.Pass());
   OverlayCandidateList candidate_list;
   overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
-                                         &candidate_list);
+                                         &candidate_list, &damage_rect_);
   ASSERT_EQ(1U, pass_list.size());
   EXPECT_EQ(0U, candidate_list.size());
 }
 
 TEST_F(SingleOverlayOnTopTest, RejectNonAxisAlignedTransform) {
   scoped_ptr<RenderPass> pass = CreateRenderPass();
   CreateFullscreenCandidateQuad(resource_provider_.get(),
                                 pass->shared_quad_state_list.back(),
                                 pass.get());
   pass->shared_quad_state_list.back()
       ->quad_to_target_transform.RotateAboutXAxis(45.f);
 
   RenderPassList pass_list;
   pass_list.push_back(pass.Pass());
   OverlayCandidateList candidate_list;
   overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
-                                         &candidate_list);
+                                         &candidate_list, &damage_rect_);
   ASSERT_EQ(1U, pass_list.size());
   EXPECT_EQ(0U, candidate_list.size());
 }
 
 TEST_F(SingleOverlayOnTopTest, AllowClipped) {
   scoped_ptr<RenderPass> pass = CreateRenderPass();
   CreateFullscreenCandidateQuad(resource_provider_.get(),
                                 pass->shared_quad_state_list.back(),
                                 pass.get());
   pass->shared_quad_state_list.back()->is_clipped = true;
   pass->shared_quad_state_list.back()->clip_rect = kOverlayClipRect;
 
   RenderPassList pass_list;
   pass_list.push_back(pass.Pass());
   OverlayCandidateList candidate_list;
   overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
-                                         &candidate_list);
+                                         &candidate_list, &damage_rect_);
   ASSERT_EQ(1U, pass_list.size());
   EXPECT_EQ(1U, candidate_list.size());
 }
 
 TEST_F(SingleOverlayOnTopTest, AllowVerticalFlip) {
   gfx::Rect rect = kOverlayRect;
   rect.set_width(rect.width() / 2);
   rect.Offset(0, -rect.height());
   scoped_ptr<RenderPass> pass = CreateRenderPass();
   CreateCandidateQuadAt(resource_provider_.get(),
                         pass->shared_quad_state_list.back(), pass.get(), rect);
   pass->shared_quad_state_list.back()->quad_to_target_transform.Scale(2.0f,
                                                                       -1.0f);
 
   RenderPassList pass_list;
   pass_list.push_back(pass.Pass());
   OverlayCandidateList candidate_list;
   overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
-                                         &candidate_list);
+                                         &candidate_list, &damage_rect_);
   ASSERT_EQ(1U, pass_list.size());
   ASSERT_EQ(1U, candidate_list.size());
   EXPECT_EQ(gfx::OVERLAY_TRANSFORM_FLIP_VERTICAL,
             candidate_list.back().transform);
 }
 
 TEST_F(SingleOverlayOnTopTest, AllowHorizontalFlip) {
   gfx::Rect rect = kOverlayRect;
   rect.set_height(rect.height() / 2);
   rect.Offset(-rect.width(), 0);
   scoped_ptr<RenderPass> pass = CreateRenderPass();
   CreateCandidateQuadAt(resource_provider_.get(),
                         pass->shared_quad_state_list.back(), pass.get(), rect);
   pass->shared_quad_state_list.back()->quad_to_target_transform.Scale(-1.0f,
                                                                       2.0f);
 
   RenderPassList pass_list;
   pass_list.push_back(pass.Pass());
   OverlayCandidateList candidate_list;
   overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
-                                         &candidate_list);
+                                         &candidate_list, &damage_rect_);
   ASSERT_EQ(1U, pass_list.size());
   ASSERT_EQ(1U, candidate_list.size());
   EXPECT_EQ(gfx::OVERLAY_TRANSFORM_FLIP_HORIZONTAL,
             candidate_list.back().transform);
 }
 
 TEST_F(SingleOverlayOnTopTest, AllowPositiveScaleTransform) {
   gfx::Rect rect = kOverlayRect;
   rect.set_width(rect.width() / 2);
   scoped_ptr<RenderPass> pass = CreateRenderPass();
   CreateCandidateQuadAt(resource_provider_.get(),
                         pass->shared_quad_state_list.back(), pass.get(), rect);
   pass->shared_quad_state_list.back()->quad_to_target_transform.Scale(2.0f,
                                                                       1.0f);
 
   RenderPassList pass_list;
   pass_list.push_back(pass.Pass());
   OverlayCandidateList candidate_list;
   overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
-                                         &candidate_list);
+                                         &candidate_list, &damage_rect_);
   ASSERT_EQ(1U, pass_list.size());
   EXPECT_EQ(1U, candidate_list.size());
 }
 
 TEST_F(SingleOverlayOnTopTest, Allow90DegreeRotation) {
   gfx::Rect rect = kOverlayRect;
   rect.Offset(0, -rect.height());
   scoped_ptr<RenderPass> pass = CreateRenderPass();
   CreateCandidateQuadAt(resource_provider_.get(),
                         pass->shared_quad_state_list.back(), pass.get(), rect);
   pass->shared_quad_state_list.back()
       ->quad_to_target_transform.RotateAboutZAxis(90.f);
 
   RenderPassList pass_list;
   pass_list.push_back(pass.Pass());
   OverlayCandidateList candidate_list;
   overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
-                                         &candidate_list);
+                                         &candidate_list, &damage_rect_);
   ASSERT_EQ(1U, pass_list.size());
   ASSERT_EQ(1U, candidate_list.size());
   EXPECT_EQ(gfx::OVERLAY_TRANSFORM_ROTATE_90, candidate_list.back().transform);
 }
 
 TEST_F(SingleOverlayOnTopTest, Allow180DegreeRotation) {
   gfx::Rect rect = kOverlayRect;
   rect.Offset(-rect.width(), -rect.height());
   scoped_ptr<RenderPass> pass = CreateRenderPass();
   CreateCandidateQuadAt(resource_provider_.get(),
                         pass->shared_quad_state_list.back(), pass.get(), rect);
   pass->shared_quad_state_list.back()
       ->quad_to_target_transform.RotateAboutZAxis(180.f);
 
   RenderPassList pass_list;
   pass_list.push_back(pass.Pass());
   OverlayCandidateList candidate_list;
   overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
-                                         &candidate_list);
+                                         &candidate_list, &damage_rect_);
   ASSERT_EQ(1U, pass_list.size());
   ASSERT_EQ(1U, candidate_list.size());
   EXPECT_EQ(gfx::OVERLAY_TRANSFORM_ROTATE_180, candidate_list.back().transform);
 }
 
 TEST_F(SingleOverlayOnTopTest, Allow270DegreeRotation) {
   gfx::Rect rect = kOverlayRect;
   rect.Offset(-rect.width(), 0);
   scoped_ptr<RenderPass> pass = CreateRenderPass();
   CreateCandidateQuadAt(resource_provider_.get(),
                         pass->shared_quad_state_list.back(), pass.get(), rect);
   pass->shared_quad_state_list.back()
       ->quad_to_target_transform.RotateAboutZAxis(270.f);
 
   RenderPassList pass_list;
   pass_list.push_back(pass.Pass());
   OverlayCandidateList candidate_list;
   overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
-                                         &candidate_list);
+                                         &candidate_list, &damage_rect_);
   ASSERT_EQ(1U, pass_list.size());
   ASSERT_EQ(1U, candidate_list.size());
   EXPECT_EQ(gfx::OVERLAY_TRANSFORM_ROTATE_270, candidate_list.back().transform);
 }
 
 TEST_F(SingleOverlayOnTopTest, AllowNotTopIfNotOccluded) {
   scoped_ptr<RenderPass> pass = CreateRenderPass();
   CreateOpaqueQuadAt(resource_provider_.get(),
                      pass->shared_quad_state_list.back(), pass.get(),
                      kOverlayTopLeftRect);
   CreateCandidateQuadAt(resource_provider_.get(),
                         pass->shared_quad_state_list.back(),
                         pass.get(),
                         kOverlayBottomRightRect);
 
   RenderPassList pass_list;
   pass_list.push_back(pass.Pass());
 
   RenderPassList original_pass_list;
   RenderPass::CopyAll(pass_list, &original_pass_list);
 
   OverlayCandidateList candidate_list;
   overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
-                                         &candidate_list);
+                                         &candidate_list, &damage_rect_);
   EXPECT_EQ(1U, pass_list.size());
   EXPECT_EQ(1U, candidate_list.size());
 }
 
 TEST_F(SingleOverlayOnTopTest, AllowTransparentOnTop) {
   scoped_ptr<RenderPass> pass = CreateRenderPass();
   SharedQuadState* shared_state = pass->CreateAndAppendSharedQuadState();
   shared_state->opacity = 0.f;
   CreateSolidColorQuadAt(shared_state, SK_ColorBLACK, pass.get(),
                          kOverlayBottomRightRect);
   shared_state = pass->CreateAndAppendSharedQuadState();
   shared_state->opacity = 1.f;
   CreateCandidateQuadAt(resource_provider_.get(), shared_state, pass.get(),
                         kOverlayBottomRightRect);
 
   RenderPassList pass_list;
   pass_list.push_back(pass.Pass());
 
   RenderPassList original_pass_list;
   RenderPass::CopyAll(pass_list, &original_pass_list);
 
   OverlayCandidateList candidate_list;
   overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
-                                         &candidate_list);
+                                         &candidate_list, &damage_rect_);
   EXPECT_EQ(1U, pass_list.size());
   EXPECT_EQ(1U, candidate_list.size());
 }
 
 TEST_F(SingleOverlayOnTopTest, AllowTransparentColorOnTop) {
   scoped_ptr<RenderPass> pass = CreateRenderPass();
   CreateSolidColorQuadAt(pass->shared_quad_state_list.back(),
                          SK_ColorTRANSPARENT, pass.get(),
                          kOverlayBottomRightRect);
   CreateCandidateQuadAt(resource_provider_.get(),
                         pass->shared_quad_state_list.back(), pass.get(),
                         kOverlayBottomRightRect);
 
   RenderPassList pass_list;
   pass_list.push_back(pass.Pass());
 
   RenderPassList original_pass_list;
   RenderPass::CopyAll(pass_list, &original_pass_list);
 
   OverlayCandidateList candidate_list;
   overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
-                                         &candidate_list);
+                                         &candidate_list, &damage_rect_);
   EXPECT_EQ(1U, pass_list.size());
   EXPECT_EQ(1U, candidate_list.size());
 }
 
 TEST_F(SingleOverlayOnTopTest, RejectOpaqueColorOnTop) {
   scoped_ptr<RenderPass> pass = CreateRenderPass();
   SharedQuadState* shared_state = pass->CreateAndAppendSharedQuadState();
   shared_state->opacity = 0.5f;
   CreateSolidColorQuadAt(shared_state, SK_ColorBLACK, pass.get(),
                          kOverlayBottomRightRect);
   shared_state = pass->CreateAndAppendSharedQuadState();
   shared_state->opacity = 1.f;
   CreateCandidateQuadAt(resource_provider_.get(), shared_state, pass.get(),
                         kOverlayBottomRightRect);
 
   RenderPassList pass_list;
   pass_list.push_back(pass.Pass());
 
   RenderPassList original_pass_list;
   RenderPass::CopyAll(pass_list, &original_pass_list);
 
   OverlayCandidateList candidate_list;
   overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
-                                         &candidate_list);
+                                         &candidate_list, &damage_rect_);
   EXPECT_EQ(1U, pass_list.size());
   EXPECT_EQ(0U, candidate_list.size());
 }
 
 TEST_F(SingleOverlayOnTopTest, RejectTransparentColorOnTopWithoutBlending) {
   scoped_ptr<RenderPass> pass = CreateRenderPass();
   SharedQuadState* shared_state = pass->CreateAndAppendSharedQuadState();
   CreateSolidColorQuadAt(shared_state, SK_ColorTRANSPARENT, pass.get(),
                          kOverlayBottomRightRect)->opaque_rect =
       kOverlayBottomRightRect;
   CreateCandidateQuadAt(resource_provider_.get(), shared_state, pass.get(),
                         kOverlayBottomRightRect);
 
   RenderPassList pass_list;
   pass_list.push_back(pass.Pass());
 
   RenderPassList original_pass_list;
   RenderPass::CopyAll(pass_list, &original_pass_list);
 
   OverlayCandidateList candidate_list;
   overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
-                                         &candidate_list);
+                                         &candidate_list, &damage_rect_);
   EXPECT_EQ(1U, pass_list.size());
   EXPECT_EQ(0U, candidate_list.size());
 }
 
 TEST_F(SingleOverlayOnTopTest, RejectVideoSwapTransform) {
   scoped_ptr<RenderPass> pass = CreateRenderPass();
   CreateFullscreenCandidateVideoQuad(resource_provider_.get(),
                                      pass->shared_quad_state_list.back(),
                                      pass.get(), kSwapTransform);
 
   RenderPassList pass_list;
   pass_list.push_back(pass.Pass());
   OverlayCandidateList candidate_list;
   overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
-                                         &candidate_list);
+                                         &candidate_list, &damage_rect_);
   ASSERT_EQ(1U, pass_list.size());
   EXPECT_EQ(0U, candidate_list.size());
 }
 
 TEST_F(SingleOverlayOnTopTest, AllowVideoXMirrorTransform) {
   scoped_ptr<RenderPass> pass = CreateRenderPass();
   CreateFullscreenCandidateVideoQuad(resource_provider_.get(),
                                      pass->shared_quad_state_list.back(),
                                      pass.get(), kXMirrorTransform);
 
   RenderPassList pass_list;
   pass_list.push_back(pass.Pass());
   OverlayCandidateList candidate_list;
   overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
-                                         &candidate_list);
+                                         &candidate_list, &damage_rect_);
   ASSERT_EQ(1U, pass_list.size());
   EXPECT_EQ(1U, candidate_list.size());
 }
 
 TEST_F(SingleOverlayOnTopTest, AllowVideoBothMirrorTransform) {
   scoped_ptr<RenderPass> pass = CreateRenderPass();
   CreateFullscreenCandidateVideoQuad(resource_provider_.get(),
                                      pass->shared_quad_state_list.back(),
                                      pass.get(), kBothMirrorTransform);
 
   RenderPassList pass_list;
   pass_list.push_back(pass.Pass());
   OverlayCandidateList candidate_list;
   overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
-                                         &candidate_list);
+                                         &candidate_list, &damage_rect_);
   ASSERT_EQ(1U, pass_list.size());
   EXPECT_EQ(1U, candidate_list.size());
 }
 
 TEST_F(SingleOverlayOnTopTest, AllowVideoNormalTransform) {
   scoped_ptr<RenderPass> pass = CreateRenderPass();
   CreateFullscreenCandidateVideoQuad(resource_provider_.get(),
                                      pass->shared_quad_state_list.back(),
                                      pass.get(), kNormalTransform);
 
   RenderPassList pass_list;
   pass_list.push_back(pass.Pass());
   OverlayCandidateList candidate_list;
   overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
-                                         &candidate_list);
+                                         &candidate_list, &damage_rect_);
   ASSERT_EQ(1U, pass_list.size());
   EXPECT_EQ(1U, candidate_list.size());
 }
 
 TEST_F(SingleOverlayOnTopTest, AllowVideoYMirrorTransform) {
   scoped_ptr<RenderPass> pass = CreateRenderPass();
   CreateFullscreenCandidateVideoQuad(resource_provider_.get(),
                                      pass->shared_quad_state_list.back(),
                                      pass.get(), kYMirrorTransform);
 
   RenderPassList pass_list;
   pass_list.push_back(pass.Pass());
   OverlayCandidateList candidate_list;
   overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
-                                         &candidate_list);
+                                         &candidate_list, &damage_rect_);
   ASSERT_EQ(1U, pass_list.size());
   EXPECT_EQ(1U, candidate_list.size());
 }
 
 TEST_F(UnderlayTest, OverlayLayerUnderMainLayer) {
   scoped_ptr<RenderPass> pass = CreateRenderPass();
   CreateFullscreenOpaqueQuad(resource_provider_.get(),
                              pass->shared_quad_state_list.back(), pass.get());
   CreateCandidateQuadAt(resource_provider_.get(),
                         pass->shared_quad_state_list.back(), pass.get(),
                         kOverlayBottomRightRect);
 
   RenderPassList pass_list;
   pass_list.push_back(pass.Pass());
 
   OverlayCandidateList candidate_list;
   overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
-                                         &candidate_list);
+                                         &candidate_list, &damage_rect_);
   EXPECT_EQ(1U, pass_list.size());
   ASSERT_EQ(1U, candidate_list.size());
   EXPECT_EQ(-1, candidate_list[0].plane_z_order);
   EXPECT_EQ(2U, pass_list[0]->quad_list.size());
   // The overlay quad should have changed to a SOLID_COLOR quad.
   EXPECT_EQ(pass_list[0]->quad_list.back()->material, DrawQuad::SOLID_COLOR);
 }
 
 TEST_F(UnderlayTest, AllowOnTop) {
   scoped_ptr<RenderPass> pass = CreateRenderPass();
   CreateFullscreenCandidateQuad(resource_provider_.get(),
                                 pass->shared_quad_state_list.back(),
                                 pass.get());
   pass->CreateAndAppendSharedQuadState()->opacity = 0.5f;
   CreateFullscreenOpaqueQuad(resource_provider_.get(),
                              pass->shared_quad_state_list.back(), pass.get());
 
   RenderPassList pass_list;
   pass_list.push_back(pass.Pass());
 
   OverlayCandidateList candidate_list;
   overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
-                                         &candidate_list);
+                                         &candidate_list, &damage_rect_);
   EXPECT_EQ(1U, pass_list.size());
   ASSERT_EQ(1U, candidate_list.size());
   EXPECT_EQ(-1, candidate_list[0].plane_z_order);
   // The overlay quad should have changed to a SOLID_COLOR quad.
   EXPECT_EQ(pass_list[0]->quad_list.front()->material, DrawQuad::SOLID_COLOR);
 }
 
+TEST_F(UnderlayTest, DamageRect) {
+  scoped_ptr<RenderPass> pass = CreateRenderPass();
+  CreateFullscreenCandidateQuad(resource_provider_.get(),
+                                pass->shared_quad_state_list.back(),
+                                pass.get());
+
+  damage_rect_ = kOverlayRect;
+
+  // Add something behind it.
+  CreateFullscreenOpaqueQuad(resource_provider_.get(),
+                             pass->shared_quad_state_list.back(), pass.get());
+  CreateFullscreenOpaqueQuad(resource_provider_.get(),
+                             pass->shared_quad_state_list.back(), pass.get());
+
+  RenderPassList pass_list;
+  pass_list.push_back(pass.Pass());
+
+  // Check for potential candidates.
+  OverlayCandidateList candidate_list;
+
+  // Primary plane.
+  OverlayCandidate output_surface_plane;
+  output_surface_plane.display_rect = gfx::RectF(kOverlayRect);
+  output_surface_plane.quad_rect_in_target_space = kOverlayRect;
+  output_surface_plane.use_output_surface_for_resource = true;
+  output_surface_plane.overlay_handled = true;
+  candidate_list.push_back(output_surface_plane);
+
+  overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
+                                         &candidate_list, &damage_rect_);
+  DCHECK(!damage_rect_.IsEmpty());
+}
+
 TEST_F(AllOrNothingOverlayTest, SuccessfulOverlappingOverlays) {
   scoped_ptr<RenderPass> pass = CreateRenderPass();
 
   // Add two overlapping candidates.
   CreateCandidateQuadAt(resource_provider_.get(),
                         pass->shared_quad_state_list.back(), pass.get(),
                         kOverlayTopLeftRect);
   CreateCandidateQuadAt(resource_provider_.get(),
                         pass->shared_quad_state_list.back(), pass.get(),
                         kOverlayRect);
 
   RenderPassList pass_list;
   pass_list.push_back(pass.Pass());
   OverlayCandidateList candidates;
   overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
-                                         &candidates);
+                                         &candidates, &damage_rect_);
 
   // Both quads should become overlays.
   EXPECT_EQ(2u, candidates.size());
   EXPECT_EQ(-1, candidates[0].plane_z_order);
   EXPECT_EQ(-2, candidates[1].plane_z_order);
   EXPECT_EQ(gfx::RectF(kOverlayTopLeftRect), candidates[0].display_rect);
   EXPECT_EQ(gfx::RectF(kOverlayRect), candidates[1].display_rect);
 
   // All quads should be gone.
   EXPECT_TRUE(pass_list.back()->quad_list.empty());
@@ skipping 10 matching lines @@
   SharedQuadState* shared_state = pass->CreateAndAppendSharedQuadState();
   shared_state->opacity = 1.f;
   shared_state->quad_to_target_transform.Rotate(90);
   CreateSolidColorQuadAt(shared_state, SK_ColorBLACK, pass.get(),
                          kOverlayBottomRightRect);
 
   RenderPassList pass_list;
   pass_list.push_back(pass.Pass());
   OverlayCandidateList candidates;
   overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
-                                         &candidates);
+                                         &candidates, &damage_rect_);
 
   // No quads should become overlays.
   EXPECT_EQ(0u, candidates.size());
   EXPECT_EQ(2u, pass_list.back()->quad_list.size());
 }
 
+TEST_F(AllOrNothingOverlayTest, DamageRect) {
+  scoped_ptr<RenderPass> pass = CreateRenderPass();
+  CreateFullscreenCandidateQuad(resource_provider_.get(),
+                                pass->shared_quad_state_list.back(),
+                                pass.get());
+
+  damage_rect_ = kOverlayRect;
+
+  // Add something behind it.
+  CreateFullscreenOpaqueQuad(resource_provider_.get(),
+                             pass->shared_quad_state_list.back(), pass.get());
+  CreateFullscreenOpaqueQuad(resource_provider_.get(),
+                             pass->shared_quad_state_list.back(), pass.get());
+
+  RenderPassList pass_list;
+  pass_list.push_back(pass.Pass());
+
+  // Check for potential candidates.
+  OverlayCandidateList candidate_list;
+
+  // Primary plane.
+  OverlayCandidate output_surface_plane;
+  output_surface_plane.display_rect = gfx::RectF(kOverlayRect);
+  output_surface_plane.quad_rect_in_target_space = kOverlayRect;
+  output_surface_plane.use_output_surface_for_resource = true;
+  output_surface_plane.overlay_handled = true;
+  candidate_list.push_back(output_surface_plane);
+
+  overlay_processor_->ProcessForOverlays(resource_provider_.get(), &pass_list,
+                                         &candidate_list, &damage_rect_);
+  DCHECK(!damage_rect_.IsEmpty());
+}
+
 class OverlayInfoRendererGL : public GLRenderer {
  public:
   OverlayInfoRendererGL(RendererClient* client,
                         const RendererSettings* settings,
                         OutputSurface* output_surface,
                         ResourceProvider* resource_provider)
       : GLRenderer(client,
                    settings,
                    output_surface,
                    resource_provider,
@@ skipping 10 matching lines @@
 
   void FinishDrawingFrame(DrawingFrame* frame) override {
     GLRenderer::FinishDrawingFrame(frame);
 
     if (!expect_overlays_) {
       EXPECT_EQ(0U, frame->overlay_list.size());
       return;
     }
 
     ASSERT_EQ(2U, frame->overlay_list.size());
-    EXPECT_NE(0U, frame->overlay_list.back().resource_id);
+    EXPECT_GE(frame->overlay_list.back().resource_id, 0U);
   }
 
   void set_expect_overlays(bool expect_overlays) {
     expect_overlays_ = expect_overlays;
   }
 
  private:
   bool expect_overlays_;
 };
 
@@ skipping 50 matching lines @@
 };
 
 TEST_F(GLRendererWithOverlaysTest, OverlayQuadNotDrawn) {
   bool use_validator = true;
   Init(use_validator);
   renderer_->set_expect_overlays(true);
   gfx::Rect viewport_rect(16, 16);
 
   scoped_ptr<RenderPass> pass = CreateRenderPass();
 
-  CreateFullscreenCandidateQuad(resource_provider_.get(),
-                                pass->shared_quad_state_list.back(),
-                                pass.get());
-
+  CreateCandidateQuadAt(resource_provider_.get(),
+                        pass->shared_quad_state_list.back(), pass.get(),
+                        kOverlayBottomRightRect);
   CreateFullscreenOpaqueQuad(resource_provider_.get(),
                              pass->shared_quad_state_list.back(), pass.get());
   CreateFullscreenOpaqueQuad(resource_provider_.get(),
                              pass->shared_quad_state_list.back(), pass.get());
 
   RenderPassList pass_list;
   pass_list.push_back(pass.Pass());
 
   // Candidate pass was taken out and extra skipped pass added,
   // so only draw 2 quads.
   EXPECT_CALL(*renderer_, DoDrawQuad(_, _, _)).Times(2);
   EXPECT_CALL(scheduler_,
               Schedule(0, gfx::OVERLAY_TRANSFORM_NONE, _,
                        gfx::Rect(kDisplaySize), gfx::RectF(0, 0, 1, 1)))
       .Times(1);
-  EXPECT_CALL(scheduler_,
-              Schedule(1, gfx::OVERLAY_TRANSFORM_NONE, _, kOverlayRect,
-                       BoundingRect(kUVTopLeft, kUVBottomRight)))
+  EXPECT_CALL(scheduler_, Schedule(1, gfx::OVERLAY_TRANSFORM_NONE, _,
+                                   kOverlayBottomRightRect,
+                                   BoundingRect(kUVTopLeft, kUVBottomRight)))
       .Times(1);
   renderer_->DrawFrame(&pass_list, 1.f, viewport_rect, viewport_rect, false);
 
   SwapBuffers();
 
   Mock::VerifyAndClearExpectations(renderer_.get());
   Mock::VerifyAndClearExpectations(&scheduler_);
 }
 
 TEST_F(GLRendererWithOverlaysTest, OccludedQuadInUnderlay) {
@@ skipping 182 matching lines @@
   renderer_->BeginDrawingFrame(&frame_no_overlays);
   renderer_->FinishDrawingFrame(&frame_no_overlays);
   EXPECT_TRUE(resource_provider_->InUseByConsumer(resource1));
   SwapBuffers();
   EXPECT_FALSE(resource_provider_->InUseByConsumer(resource1));
   Mock::VerifyAndClearExpectations(&scheduler_);
 }
 
 }  // namespace
 }  // namespace cc