Rom 3.35.651.2 Graphic acceleration

[njhend]

I know there is no specific driver (graphic acceleration) in this Rom. But HTC was planning to add what they claim as improvements. Somewhere I read HTC claimed graphic improvements can be achieved without special graphic driver. Are there any improvements? Can you notice any difference?

By the way what is the function GetGL.CAB in the ExtendedRom?

Thanks in advance for any information.