I gave it a go on macOS Sierra (10.12.6) but I could replicate this issue and your command-line worked fine as far as I could tell. I cannot update our testing system to High Sierra right now, but I will try shortly. I am wondering whether this problem has to do with your input texture. Does it work if you input a png file? Could you attach a file that shows this problem?
The problem is that your input format is BC1 and we do not support DXTC on Mac or Linux. This is related to the S3TC patent. This patent has expired recently and we should be able to add support for these formats, but we haven’t got around to do it.
It should be there now. I have checked it on Mac and the DirectX formats are showing up as expected. Bear in mind that we only support BC1, BC2 and BC3.
I see, but it’s not working for me (macOS High Sierra)
Could you try with the input format I linked above and tell me if it’s working for you? Thanks in advance!
Hmmm, I tested just the GUI. For some reason the fix did not make to the CL version. I have tested the file you supplied and yes, the problem is still there. I have file a bug with high priority to get this sorted out.
Do you have any good news about this issue? Guess you didn’t manage to release the new version by September, did you? Anyway, I just wanted to know if you managed to test the CLI on your testing system and if it is working as intended now…
We are still doing testing for our 19.2 release and it has been slightly delayed. The fix you required is in it. If you want to get a preview drop us a ticket in https://pvrsupport.imgtec.com/ and we will share it with you.