TheoTown

They said making the texture bigger would end compatability with older devices.

We currently use a texture size of 4096x4096, and I don't think we can make it even bigger because of compatibility (even HTC one (m7) cannot handle a bigger size but has been a flagship smartphone only some years ago) and texture coordinate precision (the latter already now leads to black lines on compound buildings and ugly pixel artefacts on some devices).

So yeah, when we have filled this texture, we have a big problem We could add another one, but that would have a bad impact on performance and many devices won't have enough VRAM.

But we still have some space, so don't worry. There were days in which we thought we could never go bigger than 2048x2048 so we started to use the storage we have as efficiently as possible.

I would say it is even not a problem of the language but of smartphone hardware in general (although we use Java, but it is well optimized since newer Android versions). However, we have some time till we get into trouble.