iOS App with mult resolution assets

Unity Engine
1

Hi,
I am new to Unity and I have a basic question about setting screen size and size of image assets.

In Corona SDK we set the 2D screen size to 480x320 and then provide three versions of each art assets. e.g the first one named image.png, the second one named image@2x.png (it is twice the resolution of the first one) and the third one is image@4x.png (four times the size of the first one).

Corona chooses the best image based on device resolution at runtime. So on iPhone 2 the image.png will get displayed and on iPad 4 image@4x.png will be displayed. The game is pixel perfect and there is not up-scaling of images (no pixilation).

How can we do that above in unity. What is the ideal size for the Orthographic projection if I am making an iOS app.

thanks in advance.

2

The 2Dtoolkit plugin does exactly that!
http://www.unikronsoftware.com/2dtoolkit/docs/latest/advanced/platform_specific_sprite_collections.html

3

Thanks. Is there any free alternative? I thought this might be part of the Unity 2D

4

Nope no free alternative.

5

You can just write your own, or if you use assetbundles, it can be a little easier. That way you can keep the names all the same and just load different bundles.

6

Thanks. I will do that.