Just compressed an image into the BC3 (aka DXT4/5, aka S3TC) format and while PVRTexTool happily generates the image, it won’t open the resulting file afterwards. I’ve tried .KTX, .PVR, and .DDS containers, no dice. I’m on Windows and every other program that uses DirectX features works fine, so I don’t think the problem is on my end.
I’ve checked this with version 4.23.0 and version 5.11.1 and loading BC3 textures works on neither.
By the way, it seems like 5.11.1 crashes any time it tries to display a diff. Pretty big feature to be broken, is this only on my end?