Have you seen our Megacity demo? With 4.5M mesh renderers, 200K unique objects per building, 100K audio sources, and 5K dynamic vehicles, running it on mobile was a major challenge. Unity's David Berger reveals how the new Adaptive Performance feature, developed in partnership with Samsung, ensured a smoother mobile experience and greatly improved battery life.

2. 2
Megacity on Mobile
How We Optimized It with Adaptive
Performance
David Berger, Software Developer at Unity Technologies
db@unity3d.com

3. GenerativeArt—MadewithUnity
Samsung
GameSDK
Jungwoo Kim,
Principal Engineer, Samsung Electronics

4. Limitation in Mobile
4

5. Limitation in Mobile
5
149 mm2398 mm2119 mm2
PC Desktop
CPU
PC Desktop
GPU

6. Limitation in Mobile
6
— Peak GPU Performance
S6 S7 S8 S9S5
20182017201620152014
2006

7. Optimization
7
— New Technologies

8. Optimizing Games
8

9. Governor in UI Rendering
9
Touch Booster
Late respond
à Perf drop

10. Governor in Gaming
10
Late respond
à Perf drop
Over react
à Heat up

11. Governor in Gaming
11
Late respond
à Perf drop
Over react
à Heat up

12. Heat Management
12
— Thermal Throttling in Gaming
60 fps @ start
40 fps @ end

13. Heat Management
13
— Managing Target Performance helps sustainability of gaming experience
50 fps steady

14. GameSDK
14
— onHighTempWarning(int warningLevel)
WarningLevel 0 WarningLevel 1 WarningLevel 2
Throttling

15. GameSDK
15
— getTempLevel(), getCPU/GPUJTLevel(), getSkinTempLevel()
0
1
2
3
4
5
6
7

16. GameSDK
16
— getLevelWithScene(String scene, int cpuLevel, int gpuLevel)
CPU Freq
GPU Freq
Level 2
Level 1

17. GameSDK
17
New interface to exchange power and thermal hint
between game app and the device to manage gaming
performance based on clear context is coming soon
This will allow game developer to tune their games
by more predictable and manageable manner
Game
App
te

18. What Samsung is doing…
18
— Helping Developers with adoption of New Technologies

19. What Samsung is doing…
19
— Helping Developers with adoption of New Technologies
GPUWatch + GameSDK

20. What Samsung is doing…
20
— Helping Developers with adoption of New Technologies
Adaptive Performance

21. 21
Adaptive Performance in Megacity

22. GenerativeArt—MadewithUnity
Adaptive Performance
Get device performance
status and thermal trends
Proactively adjust performance
and quality settings on the fly

23. Smoother Gameplay

25. 25
8M
Triangles
6M
Entities
2K
Cars

26. 30FPS - stable over time
26

27. 27
30
15
200 Time [m]
Framerate

28. Adaptive Performance
28
— Start with Low CPU/GPU levels (Menu->Level)
– Increase levels for CPU or GPU bottleneck
respectively
– Keeps energy consumption low
— Not hitting target frame rate
– Decrease the LOD bias
– Decreases GFX load (triangles, memory, draw
calls)
— Decrease target framerate when close to throttling

29. 29
30
15
200 10
Time [m]

31. GenerativeArt—MadewithUnity
Adaptive Performance: How it works
1-Add the package

32. GenerativeArt—MadewithUnity
Adaptive Performance: How it works
2-Register to OnThermalEvent, Set initial target level

33. GenerativeArt—MadewithUnity
Adaptive Performance: How it works
3-Manage your quality settings when Thermal status changes

34. GenerativeArt—MadewithUnity
Adaptive Performance: How it works
4-You can subscribe to Performance bottleneck events

35. GenerativeArt—MadewithUnity
Adaptive Performance: How it works
4-You can subscribe to performance bottleneck events

36. GenerativeArt—MadewithUnity
Adaptive Performance Preview
available in the coming weeks

38. GenerativeArt—MadewithUnity
Roadmap
● Preview
○ 2019.1+
● Verified
○ 2019.3
● Future
○ 2019.3+