Lightbulb [Q] Which files are the Gpu driver libs?

OK guys i really hope someone can help me on this question but this advanced developer stuff, here it goes:

As you probably know, an android rom has to incorporate inumerous library files for the android system to work with the phone.
Our phone has a great cpu chip, 1.2 dual core (underclocked by sony to 1.0) with an Adreno 305.

Now i would like to know if someone can help me update our gpu driver files since we have an old version on our stock softwares and
unfortunely, not everyone has an unlockable bootloader and a cyanogenmod.

I'm currently using stock rom (with stock kernel) version 15.3.A.1.14 and using the antutu benchmark app I discovered that my gpu
driver files are version V@31.0
Im thinking about updating to 15.3.A.1.17 to see if there are better driver files there.

Anyway, I just wanted to say that better driver files may affect performance in a positive way.
If someone know, in the system files, wich ones are responsible for the gpu please contact me or answer here in the thread. Also can i download the drivers directly from adreno or do they have to be adapted to sony's software?

Sorry for my rusty english XD

(Thanks in advance)