How many textures do you have in your iPhone games?

Unity Engine
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1

Hi

I’ve just finished developing a game using SpriteManager2. All my graphics are 2D with lots of animations and my game scene includes 4 uncompressed textures each sized 1024x1024. The game runs fine on 3GS, but has a low frame rate on 1st gen devices.

So three questions:

  1. How many textures do you have in your iPhone game? Compressed/uncompressed? And what size are they?

  2. Does the amount of memory used by the game have an influence on the frame rate?

  3. Should you even bother with lower frame rate on 1st gen devices?

2
  1. How many textures do you have in your iPhone game?

mine has around 20 textures

Compressed/uncompressed? And what size are they?

all compressed, max 512 x 512

  1. Does the amount of memory used by the game have an influence on the frame rate?

I think so. So, you’d better preload and cache

  1. Should you even bother with lower frame rate on 1st gen devices?

Should not bother

3
  1. How many textures do you have in your iPhone game?

around 40 textures

Compressed/uncompressed? And what size are they?

all compressed, 1024x1024 scaled to 512x512 for 3G and 2G.

  1. Does the amount of memory used by the game have an influence on the frame rate?

loading textures ingame causes framerate drops. Preload them.

  1. Should you even bother with lower frame rate on 1st gen devices?

I do, but maybe you should not.

4

Are you sure the performance bottleneck is the number/size of the textures? iPhone 3G differs from 3Gs in a lot of parameters, from the CPU to a completely different GPU.

Where time is spent according to iPhone internal profiler?

5

Thanks for the input guys.

I’ve just managed to redo my sprite atlases, so I only have 2 1024x1024 and 2 512x512 both uncompressed. Now the game is using around 50 MB of memory on 3GS and 48 MB on iPod Touch 1st gen. This has improved the frame rate significantly. However it still does not run smoothly on a 1st gen device. But based on your feedback I will probably just leave it there and hope it does not result in too many bad ratings :slight_smile:

Aras, I’ll check the profiler later today and post the results here. Maybe you can help decipher it? :slight_smile:

By the way, I’ve made a simple site showing some features and screenshots of the game. Please have a look.

http://axeinface.com

I’m very excited to get it on the App Store. So performance issues: BE GONE!