NGUI got smashed chars on mobile, but everything is fine on pc. How come?

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Check the size of the font texture and the maximum size of textures on your mobile device.

 

the size of the font texture 627 x 57
the maximum size of textures on your mobile device. 1024
:any problems?

 

Is it set as a GUI texture, or otherwise allowed to be a non-power-of-two size? By default that'll get resized to a square (works better with GPUs that way), which means the UVs will be messed up for the characters. That's my guess.

 

you mean the atlas texture's size?
It is 2048x2048.
the original texture is useless since it has been packed in atlas texture.
I repack it the atlast again after switching to mobile platform, but the problem still resides......

 

Repacking is useless. On mobile that whole texture might be getting resized to 1024 due to memory/texture size limits. That will throw out the pre-calculated UV offsets for the characters. Check the platform-specific texture size settings, not the atlas generation settings.

 

thx,that might help......