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发帖数: 3838 | 1 有个贴和我的观测相符. ios 6+xcode4.5 的性能下降很多。
难道apple强迫淘汰老机器？
http://forum.unity3d.com/threads/151830-iOS-6-and-Xcode-4.5-per
"Hi there,
I am developing games not with Unity, but with a home-made 2D OpenGLES non-
GLkit (no shaders) engine. I thought I'd add some results just to confirm
this is not a Unity-only problem.
Both the transitions from iOS 5.1 to 6.0 and from xcode 4.41 to xcode 4.5
lead to a drop in fps in my game.
The memory and cpu requirements of this game are negligible.
-iphone 4 iOS 5.1 to iphone 4 iOS 6.0, built with Xcode 4.5 shows an average
fps drop of 25%.
-xcode 4.5 to xcode 4.4.1 on an iphone 4 with iOS 6.0 shows an additional
fps drop of 10%.
-xcode 4.5 to xcode 4.4.1 on an iphone 4 with iOS 5.1 shows an additional
fps drop of 5%.
Basically this means that having iOS 6.0 on a 4 and running an app compiled
with xcode 4.5 will seriously change performance.
At first I thought this was due to the new performance analyzer that runs
during xcode 4.5 debugging, but release builds showed similar fps
differences.
Thanks, I'm glad I'm not the only one with this problem.
PS: No it is not silly to upgrade an iPhone 4 to 6.0 because that's what the
customers will do." |
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