Create PVR texture from png file

Hi,

I have one image file in png format. I want to create texture out of that image. To convert into texture format .pvr I am using following command:

$ ./texturetool -e PVRTC -o ./image.pvr ./image.png

image.pvr file is getting created but with zero bytes file size. I loaded and tested it nothing comes blank screen.

Please tell me syntax of conversion from png or jpg to .pvr.

Regards,
Ganesh Pisal
Vavni Inc