Command Line Arguments To Create PVRTC Using PVRTexTool

Questions & Answers
1

Does anyone know the command line arguments for creating PVRTC textures?

I’ve been trying to manually convert a few to have Unity load them in via ‘Texture2D.LoadRawTextureData’ but haven’t had any luck.

I was able to use the Xcode utility to create a Unity readable pvrtc formatted file no problem. Can’t seem to get it working with the PVRTexTool.

My current format is:

PVRTexTool -i ~/Downloads/Tex_Natural_A.tga -o ~/Downloads/Tex_Natural_A.pvr -f PVRTC1_2,UBN,lRGB -q pvrtcfast

Any help would be great.

2

Ok so I figured it out…

There are a few things you have to do:

  1. Encode your texture using these parameters:

    PVRTexTool -i ~/Downloads/Tex_Natural_A.tga -o ~/Downloads/Tex_Natural_A.pvr -f PVRTC1_2,UBN,lRGB -q pvrtcfast -legacypvr

  2. Next inside of Unity, you need to strip the metadata/header data from the pvr before Unity can read it.
    Note that with legacy pvr, the header size is always has a 52 bit-length.

    WWW www = new WWW(“file://” + dir.ToString() + “/Tex_Natural_A.pvr”);
    yield return www;
    int headerSize = 52;
    byte buffer = new byte[www.size - headerSize];
    System.Buffer.BlockCopy(www.bytes, headerSize, buffer, 0, www.size - headerSize);
    Texture2D tex = new Texture2D(512,256,TextureFormat.PVRTC_RGBA2,false,true);
    tex.LoadRawTextureData(buffer);
    tex.Apply();