It’s important for developers to deliver the best possible performance and power efficiency for their Android games. With the addition of native x86 Android support in Unity*, Square Enix was able to take advantage of the new feature with their popular title “Hitman GO”—one of the first games published with x86 Android native support developed with Unity. In this session we will discuss how Hitman GO’s “design by constraints” philosophy allowed the developers to deliver a polished, high-end experience to mobile devices. We will then walk the audience through adding x86 support to a previously ARM*-only project. Finally, we will show how to use Intel® Graphics Performance Analyzers toolset to provide the best possible user experience, ensuring that users on the top tablet silicon achieve the highest power and performance. Developers will come out of this presentation with new insights about the Android ecosystem and tools/techniques to optimize their apps to provide a better experience on all levels of hardware to reach as many end users as possible.

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Cristiano Ferreira, Intel
Francis Pétrin, Square Enix Montréal
March 03, 2015
Play Faster and Longer: How Square-
Enix Montréal Maximized Android
Performance and Battery Life
with Hitman GO

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Legal

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Hitman GO
iOS + Android: 7000+ devices

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Trailer

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Hitman GO
Editor’s choice:
iOS App Store
Google Play

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Hitman GO

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Hitman GO

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Established 2011
Mandate: Create the next installment in the Hitman
franchise
Plot twist: Switched to mobile development in 2013
Square Enix Montréal

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Engine Selection

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Iteration time
Multi-platform
Community support
Experience
Engine Selection

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Technical challenges
Asset creation Multi-platform
development

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Asset creation
Asset creation

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Asset creation
Missing picture
(HMA model)

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 Static lighting
1. Baked lightmaps
2. Quads for shadows
 Merged geometry
 Limiting post-process effects
 Drawcalls, drawcalls, drawcalls
Optimizations

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Level creation process

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Level creation process

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Pros:
 Allowing designers to author levels
 Parallelizing art production
Cons:
 A lot of waste! Only used around
35% of all assets
 Multiple steps to support lightmaps
Level creation process

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Technical challenges
Multi-platform
development

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Don’t tunnel vision your main SKU!
Abstract early and often!
 First party authentication
 Achievements, leaderboards
 Cloud save
Multi-platform development

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Design your interfaces with change in mind
Performance and memory limitations
 Low and high resolution configuration
Multi-platform development

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Leverage your tech
Multi-platform development

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 Empower your developers
 Prepare for multi-platform early
 Choose technology that enables
you as creators
Takeaways

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 x86 Devices and targeting native architecture
 Live game profiling demo with free profiling tools!
Topics

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 46 million Intel based tablets shipped in 2014
 As of Q2’14, Intel took #2 position in tablet AP MSS
with 15%, behind only to Apple
Bay Trail Devices

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 Intel Atom is powering the only Android TV device on
the market
Nexus Player + x86

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Partnerships with Industry Leaders

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 Free with all versions of Unity
 Unity did all of the hard work
 By default, Unity will generate a ‘FAT APK’ that supports
both ARMv7 and x86 devices
Full Unity support for x86 Android in 4.6

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Adding x86 support is a small increase
to the APK size
Binary Type Angry Bots APK Size
x86 or ARM 24.5 MB
FAT (x86 and ARM) 31.5 MB

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Targeting the correct hardware
 Angry Bots on an Android x86 device:
ARM version x86 version Diff
FPS 35 46 31%
CPU Load Per Frame .71% .48% 48%
Power Per Frame 28 mA / Frame 19 mA / Frame 46%

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Targeting the correct hardware
 Hitman GO on an Android x86 device:
ARM version x86 version Diff
FPS 53.3 60 14.6%
CPU Load Per Frame 0.4% 0.3% 21.5%
Power Per Frame 16.5 mA / Frame 15.6 mA / Frame 6.3%

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Targeting the correct hardware is
important
 School of Dragons on an Android x86 device:
ARM version x86 version Diff
FPS 17 43 146%
CPU Load Per Frame 2.1% 1.1% 87.6%
Power Per Frame 56.9 mA / Frame 30.2 mA / Frame 88.1%

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If creating a standard Android project
• Add x86 as a build target in the Application.mk file in
the jni directory.

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Live Demo

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 Many new devices and customers!
 Hitman GO! is awesome and you should get it now!
 Get the tools (URLs are coming – get ready!)
Summary

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 @Cristianohh
– DM / Tweet at me – I’ll lend help and profile your app!
 Meet up!
– Unity Game Programming and Profiling - End of west bridge
 Graphics Performance Analyzer / Samples!
Target x86 today!

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 Fastest Android Emulator
Intel HAXM