Technically doable but you'd have to put in a bunch of effort (effectively reimplement the stock OS's API surface, which includes OpenGL for later devices).

I also think these games are still not decrypted - some previous ones were, but the methodology was not made public. The decryption routine in the devices I've looked at is obfuscated, so it might be easier to modify the firmware to save decrypted blobs than reimplement it.