Please add support for dds file with BCn format in MP

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Joined: Sun Aug 05, 2018 9:44 am

Please add support for dds file with BCn format in MP

Post by cwcwyoon » Sun Aug 05, 2018 10:09 am

I'm using XnView MP and it works really great in my computer. I love the program.
However, I got an issue about dds files recently. I used MP to view my dds files and it worked fine until I installed new games.
I play Skyrim of Bethesda, and it uses dds files in DXT format. And MP works fine on these files.
But later games like Skyrim Special Edition and Fallout 4 of Bethesda, they use dds files in BCn format(like BC1, BC5, BC7).
But these dds files are recognized using DXT format in MP, thus they look broken in the viewer window.
So if I want to view these images, I have to use another program like Photoshop with additional plugin. And they're not light as MP.
I don't want to install another program to just view these files. Please consider to add support for it. Thank you in advance.

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Joined: Sun Sep 18, 2016 7:39 pm

Re: Please add support for dds file with BCn format in MP

Post by Magister » Mon Aug 13, 2018 3:21 pm

Actually, BC1=DXT1, BC2 = DXT3, BC3 = DXT5. What we need is support for the new BC7 format used in Skyrim SE, fallout 4, and presumably other games as well. it produces less compression artifacts than DXT5.

Please can you add support for this newer iterations of the DXT format? Thankyou.

EDIT: I have uploaded a normal map compressed in BC7 format. BC7 DDS textures open in Xnview but are displayed incorrectly and look like static (lots of small blocks of different colours).

Example File:!FKoCEYpB!x4fmogmYCm2i ... el8oqexJqU

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