cc: Consider Surface active if frame received recently

cc/surfaces/display_scheduler_unittest.cc

 // Copyright 2015 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/surfaces/display_scheduler.h"
 
 #include "base/logging.h"
 #include "base/test/null_task_runner.h"
 #include "base/test/simple_test_tick_clock.h"
 #include "base/trace_event/trace_event.h"
@@ skipping 151 matching lines @@
   scheduler_->SurfaceDamaged(sid2);
   EXPECT_GE(now_src().NowTicks(),
             scheduler_->DesiredBeginFrameDeadlineTimeForTest());
   scheduler_->BeginFrameDeadlineForTest();
 
   // Make the system idle
   BeginFrameForTest();
   scheduler_->BeginFrameDeadlineForTest();
   BeginFrameForTest();
   scheduler_->BeginFrameDeadlineForTest();
+  BeginFrameForTest();
+  scheduler_->BeginFrameDeadlineForTest();
 
   // Deadline should trigger early if child surfaces are idle and
   // we get damage on the root surface.
+  BeginFrameForTest();
+  EXPECT_LT(now_src().NowTicks(),
+            scheduler_->DesiredBeginFrameDeadlineTimeForTest());
+  scheduler_->SurfaceDamaged(root_surface_id);
+  EXPECT_GE(now_src().NowTicks(),
+            scheduler_->DesiredBeginFrameDeadlineTimeForTest());
+  scheduler_->BeginFrameDeadlineForTest();
+}
+
+TEST_F(DisplaySchedulerTest, SurfaceActiveAt30fps) {
+  SurfaceId root_surface_id(0);
+  SurfaceId sid1(1);
+  SurfaceId sid2(2);
+
+  // Set the root surface
+  scheduler_->EntireDisplayDamaged(root_surface_id);
+
+  // Get scheduler to detect surface 1 and 2 as active by drawing
+  // two frames in a row. First frame with damage only from surface 1
+  // and the second frame only with damage from surface 2.
+  BeginFrameForTest();
+  scheduler_->SurfaceDamaged(sid1);
+  scheduler_->BeginFrameDeadlineForTest();
+  BeginFrameForTest();
+  scheduler_->SurfaceDamaged(sid2);
+  scheduler_->BeginFrameDeadlineForTest();
+
+  // Deadline doesn't trigger early until surface 1 and 2 are both damaged.
+  BeginFrameForTest();
+  EXPECT_LT(now_src().NowTicks(),
+            scheduler_->DesiredBeginFrameDeadlineTimeForTest());
+  scheduler_->SurfaceDamaged(sid1);
+  EXPECT_LT(now_src().NowTicks(),
+            scheduler_->DesiredBeginFrameDeadlineTimeForTest());
+  scheduler_->SurfaceDamaged(sid2);
+  EXPECT_GE(now_src().NowTicks(),
+            scheduler_->DesiredBeginFrameDeadlineTimeForTest());
+  scheduler_->BeginFrameDeadlineForTest();
+
+  // Make the system idle
+  BeginFrameForTest();
+  scheduler_->BeginFrameDeadlineForTest();
+  BeginFrameForTest();
+  scheduler_->BeginFrameDeadlineForTest();
+  BeginFrameForTest();
+  scheduler_->BeginFrameDeadlineForTest();
+
+  // Deadline should trigger early if child surfaces are idle and
+  // we get damage on the root surface.
+  BeginFrameForTest();
+  EXPECT_LT(now_src().NowTicks(),
+            scheduler_->DesiredBeginFrameDeadlineTimeForTest());
+  scheduler_->SurfaceDamaged(root_surface_id);
+  EXPECT_GE(now_src().NowTicks(),
+            scheduler_->DesiredBeginFrameDeadlineTimeForTest());
+  scheduler_->BeginFrameDeadlineForTest();
+}
+
+TEST_F(DisplaySchedulerTest, SurfaceActiveAt20fps) {
+  SurfaceId root_surface_id(0);
+  SurfaceId sid1(1);
+  SurfaceId sid2(2);
+  SurfaceId sid3(3);
+
+  // Set the root surface
+  scheduler_->EntireDisplayDamaged(root_surface_id);
+
+  // Get scheduler to detect surface 1, 2, and 3 as active by drawing
+  // 3 frames in a row. With damage from each surface in succession.
+  BeginFrameForTest();
+  scheduler_->SurfaceDamaged(sid1);
+  scheduler_->BeginFrameDeadlineForTest();
+  BeginFrameForTest();
+  scheduler_->SurfaceDamaged(sid2);
+  scheduler_->BeginFrameDeadlineForTest();
+  BeginFrameForTest();
+  scheduler_->SurfaceDamaged(sid3);
+  scheduler_->BeginFrameDeadlineForTest();
+
+  // Deadline doesn't trigger early until surface 1, 2, and 3 are all damaged.
+  BeginFrameForTest();
+  EXPECT_LT(now_src().NowTicks(),
+            scheduler_->DesiredBeginFrameDeadlineTimeForTest());
+  scheduler_->SurfaceDamaged(sid1);
+  EXPECT_LT(now_src().NowTicks(),
+            scheduler_->DesiredBeginFrameDeadlineTimeForTest());
+  scheduler_->SurfaceDamaged(sid2);
+  EXPECT_LT(now_src().NowTicks(),
+            scheduler_->DesiredBeginFrameDeadlineTimeForTest());
+  scheduler_->SurfaceDamaged(sid3);
+  EXPECT_GE(now_src().NowTicks(),
+            scheduler_->DesiredBeginFrameDeadlineTimeForTest());
+  scheduler_->BeginFrameDeadlineForTest();
+
+  // Make the system idle
+  BeginFrameForTest();
+  scheduler_->BeginFrameDeadlineForTest();
+  BeginFrameForTest();
+  scheduler_->BeginFrameDeadlineForTest();
+  BeginFrameForTest();
+  scheduler_->BeginFrameDeadlineForTest();
+
+  // Deadline should trigger early if child surfaces are idle and
+  // we get damage on the root surface.
+  BeginFrameForTest();
+  EXPECT_LT(now_src().NowTicks(),
+            scheduler_->DesiredBeginFrameDeadlineTimeForTest());
+  scheduler_->SurfaceDamaged(root_surface_id);
+  EXPECT_GE(now_src().NowTicks(),
+            scheduler_->DesiredBeginFrameDeadlineTimeForTest());
+  scheduler_->BeginFrameDeadlineForTest();
+}
+
+TEST_F(DisplaySchedulerTest, SurfaceActiveAt20fps_SingleSurface) {
+  SurfaceId root_surface_id(0);
+  SurfaceId sid1(1);
+  SurfaceId sid2(2);
+  SurfaceId sid3(3);
+
+  // Set the root surface
+  scheduler_->EntireDisplayDamaged(root_surface_id);
+
+  // Get scheduler to detect surface 1 as active even though
+  // it only swaps at 20fps.
+  BeginFrameForTest();
+  scheduler_->SurfaceDamaged(sid1);
+  scheduler_->BeginFrameDeadlineForTest();
+  BeginFrameForTest();
+  scheduler_->BeginFrameDeadlineForTest();
+  BeginFrameForTest();
+  scheduler_->BeginFrameDeadlineForTest();
+
+  // Deadline doesn't trigger early until surface 1 is damaged.
+  BeginFrameForTest();
+  EXPECT_LT(now_src().NowTicks(),
+            scheduler_->DesiredBeginFrameDeadlineTimeForTest());
+  scheduler_->SurfaceDamaged(sid1);
+  EXPECT_GE(now_src().NowTicks(),
+            scheduler_->DesiredBeginFrameDeadlineTimeForTest());
+  scheduler_->BeginFrameDeadlineForTest();
+
+  // Make the system idle
+  BeginFrameForTest();
+  scheduler_->BeginFrameDeadlineForTest();
+  BeginFrameForTest();
+  scheduler_->BeginFrameDeadlineForTest();
+  BeginFrameForTest();
+  scheduler_->BeginFrameDeadlineForTest();
+
+  // Deadline should trigger early if child surfaces are idle and
+  // we get damage on the root surface.
   BeginFrameForTest();
   EXPECT_LT(now_src().NowTicks(),
             scheduler_->DesiredBeginFrameDeadlineTimeForTest());
   scheduler_->SurfaceDamaged(root_surface_id);
   EXPECT_GE(now_src().NowTicks(),
             scheduler_->DesiredBeginFrameDeadlineTimeForTest());
   scheduler_->BeginFrameDeadlineForTest();
 }
 
 TEST_F(DisplaySchedulerTest, OutputSurfaceLost) {
@@ skipping 150 matching lines @@
 
   scheduler_->SetRootSurfaceResourcesLocked(true);
   EXPECT_EQ(count++, scheduler_->scheduler_begin_frame_deadline_count());
 
   scheduler_->OutputSurfaceLost();
   EXPECT_EQ(count++, scheduler_->scheduler_begin_frame_deadline_count());
 }
 
 }  // namespace
 }  // namespace cc