Using PVRTexLib, it is possible to specify the number of mip-map levels when compressing a texture to PVR using CPVRTextureHeader::setMipMapCount. However, using the PVRTexTool.exe utility, I have not found the right parameter to be able to specify it. It seems to be either on (-m) or off.
Is there a way to specify it, and if there isn’t, will that be added in the future?
This functionality is not available in the command line version of PVRTexTool at the moment. It wouldn’t be difficult to add so we may consider it for the future.
Note: that OpenGL ES doesn’t allow partial mipmap chains.