That's what i feared.
I was asking because, for example, secret maryo chronicles uses 256*256 images and when
rendered they are scaled but doesn't seem pixelated.
Is this because it uses openGL?

They probably use tiling to avoid scaling. That said you can scale an image and still have it look decent, but their are limits and the further you go the more noticable it will be, interpolation algorithms like Lanczos resampling, bi-cubic filtering, and tri-linear filtering and others just help hide the effects.

That's what i feared.
I was asking because, for example, secret maryo chronicles uses 256*256 images and when
rendered they are scaled but doesn't seem pixelated.
Is this because it uses openGL?

They probably use tiling to avoid scaling. That said you can scale an image and still have it look decent, but their are limits and the further you go the more notice it will be, interpolation algorithms like Lanczos resampling, bi-cubic filtering, and tri-linear filtering and others just help hide the effects.

That's what i feared.
I was asking because, for example, secret maryo chronicles uses 256*256 images and when
rendered they are scaled but doesn't seem pixelated.
Is this because it uses openGL?

They probably use tiling to avoid scaling. That said you can scale an image and still have it look decent, but their are limits and the further you go the more notice it will be, interpolation algorithms like Lanczos resampling and bi-cubic filtering/scaling as well other filters just help hide the effects.