I have an issue where transcoding an texture using pvrtexture::Transcode and saving it out with the premultiplied header flag enabled. I get a column of pixels, 8 pixels high, at the edge of the texture. I’ve attached a screenshot of it in the PVRTexTool.
I am transcoding it to the pvrtc_4bpp_rgba format and the artefacts only show when I am using high or best quality. (Does not happen in normal quality).