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1 // Copyright 2011 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 "config.h" | |
6 | |
7 #include "CCFrameRateController.h" | |
8 | |
9 #include "CCSchedulerTestCommon.h" | |
10 #include "testing/gtest/include/gtest/gtest.h" | |
11 | |
12 using namespace cc; | |
13 using namespace WebKitTests; | |
14 using namespace WTF; | |
15 | |
16 namespace { | |
17 | |
18 class FakeCCFrameRateControllerClient : public cc::CCFrameRateControllerClient { | |
19 public: | |
20 FakeCCFrameRateControllerClient() { reset(); } | |
21 | |
22 void reset() { m_vsyncTicked = false; } | |
23 bool vsyncTicked() const { return m_vsyncTicked; } | |
24 | |
25 virtual void vsyncTick(bool throttled) { m_vsyncTicked = !throttled; } | |
26 | |
27 protected: | |
28 bool m_vsyncTicked; | |
29 }; | |
30 | |
31 | |
32 TEST(CCFrameRateControllerTest, TestFrameThrottling_ImmediateAck) | |
33 { | |
34 FakeCCThread thread; | |
35 FakeCCFrameRateControllerClient client; | |
36 base::TimeDelta interval = base::TimeDelta::FromMicroseconds(base::Time::kMi
crosecondsPerSecond / 60); | |
37 RefPtr<FakeCCDelayBasedTimeSource> timeSource = FakeCCDelayBasedTimeSource::
create(interval, &thread); | |
38 CCFrameRateController controller(timeSource); | |
39 | |
40 controller.setClient(&client); | |
41 controller.setActive(true); | |
42 | |
43 base::TimeTicks elapsed; // Muck around with time a bit | |
44 | |
45 // Trigger one frame, make sure the vsync callback is called | |
46 elapsed += base::TimeDelta::FromMilliseconds(thread.pendingDelayMs()); | |
47 timeSource->setNow(elapsed); | |
48 thread.runPendingTask(); | |
49 EXPECT_TRUE(client.vsyncTicked()); | |
50 client.reset(); | |
51 | |
52 // Tell the controller we drew | |
53 controller.didBeginFrame(); | |
54 | |
55 // Tell the controller the frame ended 5ms later | |
56 timeSource->setNow(timeSource->now() + base::TimeDelta::FromMilliseconds(5))
; | |
57 controller.didFinishFrame(); | |
58 | |
59 // Trigger another frame, make sure vsync runs again | |
60 elapsed += base::TimeDelta::FromMilliseconds(thread.pendingDelayMs()); | |
61 EXPECT_TRUE(elapsed >= timeSource->now()); // Sanity check that previous cod
e didn't move time backward. | |
62 timeSource->setNow(elapsed); | |
63 thread.runPendingTask(); | |
64 EXPECT_TRUE(client.vsyncTicked()); | |
65 } | |
66 | |
67 TEST(CCFrameRateControllerTest, TestFrameThrottling_TwoFramesInFlight) | |
68 { | |
69 FakeCCThread thread; | |
70 FakeCCFrameRateControllerClient client; | |
71 base::TimeDelta interval = base::TimeDelta::FromMicroseconds(base::Time::kMi
crosecondsPerSecond / 60); | |
72 RefPtr<FakeCCDelayBasedTimeSource> timeSource = FakeCCDelayBasedTimeSource::
create(interval, &thread); | |
73 CCFrameRateController controller(timeSource); | |
74 | |
75 controller.setClient(&client); | |
76 controller.setActive(true); | |
77 controller.setMaxFramesPending(2); | |
78 | |
79 base::TimeTicks elapsed; // Muck around with time a bit | |
80 | |
81 // Trigger one frame, make sure the vsync callback is called | |
82 elapsed += base::TimeDelta::FromMilliseconds(thread.pendingDelayMs()); | |
83 timeSource->setNow(elapsed); | |
84 thread.runPendingTask(); | |
85 EXPECT_TRUE(client.vsyncTicked()); | |
86 client.reset(); | |
87 | |
88 // Tell the controller we drew | |
89 controller.didBeginFrame(); | |
90 | |
91 // Trigger another frame, make sure vsync callback runs again | |
92 elapsed += base::TimeDelta::FromMilliseconds(thread.pendingDelayMs()); | |
93 EXPECT_TRUE(elapsed >= timeSource->now()); // Sanity check that previous cod
e didn't move time backward. | |
94 timeSource->setNow(elapsed); | |
95 thread.runPendingTask(); | |
96 EXPECT_TRUE(client.vsyncTicked()); | |
97 client.reset(); | |
98 | |
99 // Tell the controller we drew, again. | |
100 controller.didBeginFrame(); | |
101 | |
102 // Trigger another frame. Since two frames are pending, we should not draw. | |
103 elapsed += base::TimeDelta::FromMilliseconds(thread.pendingDelayMs()); | |
104 EXPECT_TRUE(elapsed >= timeSource->now()); // Sanity check that previous cod
e didn't move time backward. | |
105 timeSource->setNow(elapsed); | |
106 thread.runPendingTask(); | |
107 EXPECT_FALSE(client.vsyncTicked()); | |
108 | |
109 // Tell the controller the first frame ended 5ms later | |
110 timeSource->setNow(timeSource->now() + base::TimeDelta::FromMilliseconds(5))
; | |
111 controller.didFinishFrame(); | |
112 | |
113 // Tick should not have been called | |
114 EXPECT_FALSE(client.vsyncTicked()); | |
115 | |
116 // Trigger yet another frame. Since one frames is pending, another vsync cal
lback should run. | |
117 elapsed += base::TimeDelta::FromMilliseconds(thread.pendingDelayMs()); | |
118 EXPECT_TRUE(elapsed >= timeSource->now()); // Sanity check that previous cod
e didn't move time backward. | |
119 timeSource->setNow(elapsed); | |
120 thread.runPendingTask(); | |
121 EXPECT_TRUE(client.vsyncTicked()); | |
122 } | |
123 | |
124 TEST(CCFrameRateControllerTest, TestFrameThrottling_Unthrottled) | |
125 { | |
126 FakeCCThread thread; | |
127 FakeCCFrameRateControllerClient client; | |
128 CCFrameRateController controller(&thread); | |
129 | |
130 controller.setClient(&client); | |
131 controller.setMaxFramesPending(2); | |
132 | |
133 // setActive triggers 1st frame, make sure the vsync callback is called | |
134 controller.setActive(true); | |
135 thread.runPendingTask(); | |
136 EXPECT_TRUE(client.vsyncTicked()); | |
137 client.reset(); | |
138 | |
139 // Even if we don't call didBeginFrame, CCFrameRateController should | |
140 // still attempt to vsync tick multiple times until it does result in | |
141 // a didBeginFrame. | |
142 thread.runPendingTask(); | |
143 EXPECT_TRUE(client.vsyncTicked()); | |
144 client.reset(); | |
145 | |
146 thread.runPendingTask(); | |
147 EXPECT_TRUE(client.vsyncTicked()); | |
148 client.reset(); | |
149 | |
150 // didBeginFrame triggers 2nd frame, make sure the vsync callback is called | |
151 controller.didBeginFrame(); | |
152 thread.runPendingTask(); | |
153 EXPECT_TRUE(client.vsyncTicked()); | |
154 client.reset(); | |
155 | |
156 // didBeginFrame triggers 3rd frame (> maxFramesPending), make sure the vsyn
c callback is NOT called | |
157 controller.didBeginFrame(); | |
158 thread.runPendingTask(); | |
159 EXPECT_FALSE(client.vsyncTicked()); | |
160 client.reset(); | |
161 | |
162 // Make sure there is no pending task since we can't do anything until we re
ceive a didFinishFrame anyway. | |
163 EXPECT_FALSE(thread.hasPendingTask()); | |
164 | |
165 // didFinishFrame triggers a frame, make sure the vsync callback is called | |
166 controller.didFinishFrame(); | |
167 thread.runPendingTask(); | |
168 EXPECT_TRUE(client.vsyncTicked()); | |
169 } | |
170 | |
171 } | |
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