iOS app slicing

Unity Engine
,
1

Hi, I try to implement App slicing on my iOS game. I actually have 4 variants hd_astc, hd_pvrtc, sd_astc and sd_pvrtc. ASTC is supported as of A8 processor. Here is the list of supported iOS devices and the variants I want to apply.

IPHONE 5 : 1136x640 A6 => sd_pvrtc
IPAD 4G : 2048x1536 A6X => hd_pvrtc
IPHONE_5C : 1136x640 A6 => sd_pvrtc
IPHONE_5S : 1136x640 A7 => sd_pvrtc
IPAD_AIR : 2048x1536 A7 => hd_pvrtc
IPAD_MINI_2 : 2048x1536 A7 => hd_pvrtc
IPHONE_6 : 1334x750 A8 => sd_astc
IPHONE_6P : 1920x1080 A8 => hd_astc
IPAD_AIR_2 : 2048x1536 A8X => hd_astc
IPAD_MINI_3 : 2048x1536 A7 => hd_pvrtc
IPOD_TOUCH_6 : 1334x750 A8 => sd_astc
IPAD_PRO_12_9 : 2732x2048 A9X => hd_astc
IPAD_MINI_4 : 2048x1536 A8 => hd_astc
IPHONE_6S : 1334x750 A9 => sd_astc
IPHONE_6SP : 1920x1080 A9 => hd_astc
IPHONE_SE : 1136x640 A9 => sd_astc
IPAD_PRO_9_7 : 2048x1536 A9X => hd_astc
IPHONE_7 : 1334x750 A10 => sd_astc
IPHONE_7P : 1920x1080 A10 => hd_astc
IPAD_5 : 2048x1536 A9 => hd_astc
IPAD_PRO_10_5 : 2224x1668 A10X => hd_astc
IPAD_PRO2_12_9 : 2732x2048 A10X => hd_astc
IPHONE_8 : 1334x750 A11 => sd_astc
IPHONE_8P : 1920x1080 A11 => hd_astc
IPHONE_X : 2436x1125 A11 => hd_astc
IPAD_6 : 2048x1536 A10 => hd_astc
IPHONE_XS : 2436x1125 A12 => hd_astc
IPHONE_XS_MAX : 2688x1242 A12 => hd_astc
IPHONE_XR : 1792x828 A12 => sd_astc
IPAD_PRO3_12_9 : 2732x2048 A12X => hd_astc
IPAD_MINI_5 : 2048x1536 A12 => hd_astc
IPAD_AIR_3 : 2224x1668 A12 => hd_astc
IPOD_TOUCH_7 : 1136x640 A10 => sd_astc
IPHONE_11 : 1792x828 A13 => sd_astc
IPHONE_11_PRO : 2436x1125 A13 => hd_astc
IPHONE_11_PRO_MAX : 2688x1242 A13 => hd_astc
IPAD_PRO2_11 : 2388x1668 A12Z => hd_astc
IPAD_PRO4_12_9 : 2732x2048 A12Z => hd_astc
IPHONE_SE2 : 1334x750 A13 => sd_astc

For the newer devices I can assume that there are enought memory to support the hd texture and that the processor still supports astc so defaulting to hd_astc would be good.

Now I see in Device drop down of Variant settings there is a “Custom value” choice, I think it’s what I have to use.
But what to write in it ?
The documentation on this is really poor (inexistant) maybe a list of device model id (ex: “iPhone9,1”) ?
But what separator to use to add more than one device ?

Any help would be appreciated :wink:
Thanks in advance.

2

Below is the Xcode settings which those variant settings in Unity are mapped to. As you can see, app slicing does not slice per-device but per-device family and per-capability. The custom value, I assume, is a fallback option for Unity in the event that Apple adds a new device type to Xcode. I hope it helps.

5774560--608815--upload_2020-4-27_21-56-38.png
5774560--608815--upload_2020-4-27_21-56-38.png520×1030 58.8 KB

3

Ok thanks, so app slicing is not really usable for HD / SD handling if we cannot target at least screen size or iOS densities (1x, 2x, 3x)