KTX to PNGs?

[smlbiobot]

Given a KTX file, is it possible to convert back to PNGs? If so, what tool would I use to do that? I am on OSX.

[MarkCallow]

You can use Imagination Technology's PVRTexTool. See http://www.powervrinsider.com.

Open the KTX file. If a mipmapped, array or cubemap texture, use the Surface Browser to select the image of interest. Use File->Save Image... to save the .png.

[evandrix]

https://github.com/linkabox/KTXConverter doesn't seem to work for this file, for instance
F48746D9-6784-42D0-B55C-1B2687F0B7BB@3x.ktx.zip

[MarkCallow]

If you want the problem fixed you should file an issue at https://github.com/linkabox/KTXConverter or with Imagination Technologies if PVRTexTool is the culprit.

[MarkCallow]

Changed the title because, with the exception of uncompressed RGB and RGBA texture formats, there is no way to retrieve the "source" PNG as the data will have been lossily compressed.