- May 10, 2015 at 8:44 am #48677
I downloaded the latest PVRTexTool(4.1.6 (SDK build 3.5@3523712)) a few days ago, and use it to compress png files to PVRTC1_4.
I find that the quality is kind of poor.
One of my friend send me an old version of PVRTexTool(3.23 (SDK build 2.09.29.0627)) and it seems working much better.
I am confused why newer version works worse than old ones.
The command I was using are: (the first command is for newer version, and the second one is for older version)
PVRTexToolCli -i lossless.png -o aaa_new.pvr -l -f PVRTC1_4 -q pvrtcbest -legacypvr -p
PVRTexTool -i lossless.png -o aaa_old.pvr -f PVRTC4 -q 5 -premultalpha
the source image and result image(converted to PNG) are in the attachments.
1. lossless.png is original.
2. aaa_new.png is compressed using new version of PVRTexTool.
3. aaa_old.png is compressed using old version of PVRTexTool.
My questions are:
1. why old version works better?
2. if old version is better, can I download it from anyware?
You must be logged in to access attached files.May 12, 2015 at 2:00 pm #48700
Thanks for reporting this issue and providing example images. We will discuss this quality regression with the PVRTexTool lead engineer.May 13, 2015 at 3:38 am #48736
Would you please provide me an old version PVRTexTool running on Mac for me? I have only the windows version.May 15, 2015 at 11:12 am #48757May 17, 2015 at 12:13 pm #48771May 18, 2015 at 8:12 am #48776
To access that page, you must login to the support portal. Registration and private support are provided free of charge.
We would prefer for your request to come through the ticketing system so we can easily assign the task to one of the engineers in our team.May 18, 2015 at 10:26 am #48780
A colleague pointed out I used the wrong URL in my previous posts. I’ve corrected the URLs in this discussion chain. Apologies for any confusion this caused.