Ⅱ. やり方
1. 必要なもの
1) PowerVR SDK | Imagination Community
http://community.imgtec.com/developers/powervr/
2) ImageMagick: Convert, Edit, Or Compose Bitmap Images
http://www.imagemagick.org/
その他
PVRTexToolCLI.exeの場所
C:\Imagination\PowerVR_Graphics\PowerVR_Tools\PVRTexTool\CLI\Windows_x86_32\PVRTexToolCLI.exe
convert.exeの場所
C:\Program Files\ImageMagick-6.9.0-Q16\convert.exe