cc/trees/occlusion_tracker_perftest.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "cc/trees/occlusion_tracker.h"
   6
   7 #include "base/time/time.h"
   8 #include "cc/debug/lap_timer.h"
   9 #include "cc/layers/layer_iterator.h"
  10 #include "cc/layers/solid_color_layer_impl.h"
  11 #include "cc/test/fake_layer_tree_host_impl_client.h"
  12 #include "cc/test/fake_output_surface.h"
  13 #include "cc/test/fake_proxy.h"
  14 #include "cc/test/fake_rendering_stats_instrumentation.h"
  15 #include "cc/test/test_shared_bitmap_manager.h"
  16 #include "cc/trees/layer_tree_host_impl.h"
  17 #include "cc/trees/layer_tree_impl.h"
  18 #include "cc/trees/single_thread_proxy.h"
  19 #include "testing/gtest/include/gtest/gtest.h"
  20 #include "testing/perf/perf_test.h"
  21
  22 namespace cc {
  23 namespace {
  24
  25 static const int kTimeLimitMillis = 2000;
  26 static const int kWarmupRuns = 5;
  27 static const int kTimeCheckInterval = 10;
  28
  29 class OcclusionTrackerPerfTest : public testing::Test {
  30  public:
  31   OcclusionTrackerPerfTest()
  32       : timer_(kWarmupRuns,
  33                base::TimeDelta::FromMilliseconds(kTimeLimitMillis),
  34                kTimeCheckInterval),
  35         impl_(&proxy_) {}
  36   void CreateHost() {
  37     LayerTreeSettings settings;
  38     shared_bitmap_manager_.reset(new TestSharedBitmapManager());
  39     host_impl_ =
  40         LayerTreeHostImpl::Create(settings, &client_, &proxy_, &stats_,
  41                                   shared_bitmap_manager_.get(), NULL, NULL, 1);
  42     host_impl_->InitializeRenderer(FakeOutputSurface::Create3d());
  43
  44     scoped_ptr<LayerImpl> root_layer = LayerImpl::Create(active_tree(), 1);
  45     root_layer->SetHasRenderSurface(true);
  46     active_tree()->SetRootLayer(root_layer.Pass());
  47   }
  48
  49   LayerTreeImpl* active_tree() { return host_impl_->active_tree(); }
  50
  51   void SetTestName(const std::string& name) { test_name_ = name; }
  52
  53   void PrintResults() {
  54     CHECK(!test_name_.empty()) << "Must SetTestName() before AfterTest().";
  55     perf_test::PrintResult("occlusion_tracker_time",
  56                            "",
  57                            test_name_,
  58                            1000 * timer_.MsPerLap(),
  59                            "us",
  60                            true);
  61   }
  62
  63  protected:
  64   LapTimer timer_;
  65   std::string test_name_;
  66   FakeLayerTreeHostImplClient client_;
  67   FakeProxy proxy_;
  68   DebugScopedSetImplThread impl_;
  69   FakeRenderingStatsInstrumentation stats_;
  70   scoped_ptr<SharedBitmapManager> shared_bitmap_manager_;
  71   scoped_ptr<LayerTreeHostImpl> host_impl_;
  72 };
  73
  74 TEST_F(OcclusionTrackerPerfTest, UnoccludedContentRect_FullyOccluded) {
  75   SetTestName("unoccluded_content_rect_fully_occluded");
  76
  77   gfx::Rect viewport_rect(768, 1038);
  78   OcclusionTracker<LayerImpl> tracker(viewport_rect);
  79
  80   CreateHost();
  81   host_impl_->SetViewportSize(viewport_rect.size());
  82
  83   scoped_ptr<SolidColorLayerImpl> opaque_layer =
  84       SolidColorLayerImpl::Create(active_tree(), 2);
  85   opaque_layer->SetBackgroundColor(SK_ColorRED);
  86   opaque_layer->SetContentsOpaque(true);
  87   opaque_layer->SetDrawsContent(true);
  88   opaque_layer->SetBounds(viewport_rect.size());
  89   opaque_layer->SetContentBounds(viewport_rect.size());
  90   active_tree()->root_layer()->AddChild(opaque_layer.Pass());
  91
  92   bool update_lcd_text = false;
  93   active_tree()->UpdateDrawProperties(update_lcd_text);
  94   const LayerImplList& rsll = active_tree()->RenderSurfaceLayerList();
  95   ASSERT_EQ(1u, rsll.size());
  96   EXPECT_EQ(1u, rsll[0]->render_surface()->layer_list().size());
  97
  98   LayerIterator<LayerImpl> begin = LayerIterator<LayerImpl>::Begin(&rsll);
  99   LayerIterator<LayerImpl> end = LayerIterator<LayerImpl>::End(&rsll);
 100
 101   LayerIteratorPosition<LayerImpl> pos = begin;
 102
 103   // The opaque_layer adds occlusion over the whole viewport.
 104   tracker.EnterLayer(pos);
 105   tracker.LeaveLayer(pos);
 106
 107   gfx::Transform transform_to_target;
 108   transform_to_target.Translate(0, 96);
 109
 110   do {
 111     Occlusion occlusion =
 112         tracker.GetCurrentOcclusionForLayer(transform_to_target);
 113     for (int x = 0; x < viewport_rect.width(); x += 256) {
 114       for (int y = 0; y < viewport_rect.height(); y += 256) {
 115         gfx::Rect query_content_rect(x, y, 256, 256);
 116         gfx::Rect unoccluded =
 117             occlusion.GetUnoccludedContentRect(query_content_rect);
 118         // Sanity test that we're not hitting early outs.
 119         bool expect_empty =
 120             query_content_rect.right() <= viewport_rect.width() &&
 121             query_content_rect.bottom() + 96 <= viewport_rect.height();
 122         CHECK_EQ(expect_empty, unoccluded.IsEmpty())
 123             << query_content_rect.ToString();
 124       }
 125     }
 126
 127     timer_.NextLap();
 128   } while (!timer_.HasTimeLimitExpired());
 129
 130   ++begin;
 131   LayerIteratorPosition<LayerImpl> next = begin;
 132   EXPECT_EQ(active_tree()->root_layer(), next.current_layer);
 133
 134   ++begin;
 135   EXPECT_EQ(end, begin);
 136
 137   PrintResults();
 138 }
 139
 140 TEST_F(OcclusionTrackerPerfTest, UnoccludedContentRect_10OpaqueLayers) {
 141   static const int kNumOpaqueLayers = 10;
 142   SetTestName("unoccluded_content_rect_10_opaque_layers");
 143
 144   gfx::Rect viewport_rect(768, 1038);
 145   OcclusionTracker<LayerImpl> tracker(viewport_rect);
 146
 147   CreateHost();
 148   host_impl_->SetViewportSize(viewport_rect.size());
 149
 150   for (int i = 0; i < kNumOpaqueLayers; ++i) {
 151     scoped_ptr<SolidColorLayerImpl> opaque_layer =
 152         SolidColorLayerImpl::Create(active_tree(), 2 + i);
 153     opaque_layer->SetBackgroundColor(SK_ColorRED);
 154     opaque_layer->SetContentsOpaque(true);
 155     opaque_layer->SetDrawsContent(true);
 156     opaque_layer->SetBounds(
 157         gfx::Size(viewport_rect.width() / 2, viewport_rect.height() / 2));
 158     opaque_layer->SetContentBounds(
 159         gfx::Size(viewport_rect.width() / 2, viewport_rect.height() / 2));
 160     opaque_layer->SetPosition(gfx::Point(i, i));
 161     active_tree()->root_layer()->AddChild(opaque_layer.Pass());
 162   }
 163
 164   bool update_lcd_text = false;
 165   active_tree()->UpdateDrawProperties(update_lcd_text);
 166   const LayerImplList& rsll = active_tree()->RenderSurfaceLayerList();
 167   ASSERT_EQ(1u, rsll.size());
 168   EXPECT_EQ(static_cast<size_t>(kNumOpaqueLayers),
 169             rsll[0]->render_surface()->layer_list().size());
 170
 171   LayerIterator<LayerImpl> begin = LayerIterator<LayerImpl>::Begin(&rsll);
 172   LayerIterator<LayerImpl> end = LayerIterator<LayerImpl>::End(&rsll);
 173
 174   // The opaque_layers add occlusion.
 175   for (int i = 0; i < kNumOpaqueLayers - 1; ++i) {
 176     LayerIteratorPosition<LayerImpl> pos = begin;
 177     tracker.EnterLayer(pos);
 178     tracker.LeaveLayer(pos);
 179     ++begin;
 180   }
 181   LayerIteratorPosition<LayerImpl> pos = begin;
 182   tracker.EnterLayer(pos);
 183   tracker.LeaveLayer(pos);
 184
 185   gfx::Transform transform_to_target;
 186   transform_to_target.Translate(0, 96);
 187
 188   do {
 189     Occlusion occlusion =
 190         tracker.GetCurrentOcclusionForLayer(transform_to_target);
 191     for (int x = 0; x < viewport_rect.width(); x += 256) {
 192       for (int y = 0; y < viewport_rect.height(); y += 256) {
 193         gfx::Rect query_content_rect(x, y, 256, 256);
 194         gfx::Rect unoccluded =
 195             occlusion.GetUnoccludedContentRect(query_content_rect);
 196       }
 197     }
 198
 199     timer_.NextLap();
 200   } while (!timer_.HasTimeLimitExpired());
 201
 202   ++begin;
 203   LayerIteratorPosition<LayerImpl> next = begin;
 204   EXPECT_EQ(active_tree()->root_layer(), next.current_layer);
 205
 206   ++begin;
 207   EXPECT_EQ(end, begin);
 208
 209   PrintResults();
 210 }
 211
 212 }  // namespace
 213 }  // namespace cc