I have some images that I know will be stored with either PVR or ETC compression. I would like to be able to convert these images into uncompressed RGB. However, because of binary size constraints, I would like to do so without adding a dedicated library for the conversion.
Does there exist any ways to do this? I know functions like glCompressedTexImage2D will let me load the compressed image to GPU. However, I'm having issues reading the decoded version out. For extra context, I am trying to do this with OpenGL ES 2.0.