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Thread: DDS vs ACE

  1. #1
    Join Date
    Feb 2010
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    Günzburg, Bayern, Germany
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    Default DDS vs ACE

    Hi, guys!

    Can someone tell me if I am doing something wrong when creating .dds texture files? I've noticed ugly looking "artefacts" around stickers that do no appear to be visible on the same texture saved as .ace file.

    I work in Photoshop CS6 and save .dds files using the NVidia plugin.

    Here's a direct comparison of the same texture in DDS and ACE format:

    Borislav
    https://www.trainsim.com/vbts/signaturepics/sigpic100353_2.gif

  2. #2
    Join Date
    Apr 2003
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    New York, USA.
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    Default

    Hi Borislav,

    I'm assuming you're running compression on the DDS export ?

    I think it's your source image that might have some artifacts.

    I ran a test with the NVidia Plugin - two 2048x2048 texture sheets - one with DXT5 Compression [DXT5 ARGB 8bpp Interpolated Alpha] - the other a 32 Bit uncompressed image [8.8.8.8 ARGB 32 bpp | unsigned]. Obviously - the 32bit uncompressed image is visibly smoother - but even the DXT5 doesn't have the artifacts yours has.


    DXT5
    dxt5 by Scott B, on Flickr


    32Bit Uncompressed
    8888 by Scott B, on Flickr


    Regards,
    Scott

  3. #3
    Join Date
    Nov 2010
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    Brough UK
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    Default

    I have the program that suppose to convert DDS to Ace.but everytime I try it doesn't work.

  4. #4
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    Default

    "I ran a test with the NVidia Plugin - two 2048x2048 texture sheets - one with DXT5 Compression [DXT5 ARGB 8bpp Interpolated Alpha] - the other a 32 Bit uncompressed image [8.8.8.8 ARGB 32 bpp | unsigned]. Obviously - the 32bit uncompressed image is visibly smoother - but even the DXT5 doesn't have the artifacts yours has."

    Thank you very much, Scott! I had always been using the DXT5 ARGB 8bpp version and this was causing the issue. I just tried the 8.8.8.8 ARGB 32bpp version and the texture is nice, smooth and clean! I have no idea what these different options really mean, but I guess I will be using this option from now on. Thank you very, very much!

    "I have the program that suppose to convert DDS to Ace.but everytime I try it doesn't work."

    I don't know about "programs" to convert DDS to ACE. I use Photoshop to create a DDS file directly or to create a TGA file, which I then convert to ACE using TGA Tools, if I need an ACE file.
    Borislav
    https://www.trainsim.com/vbts/signaturepics/sigpic100353_2.gif

  5. #5
    Join Date
    Apr 2003
    Location
    New York, USA.
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    Default

    Quote Originally Posted by =FI=Ghost View Post
    "I ran a test with the NVidia Plugin - two 2048x2048 texture sheets - one with DXT5 Compression [DXT5 ARGB 8bpp Interpolated Alpha] - the other a 32 Bit uncompressed image [8.8.8.8 ARGB 32 bpp | unsigned]. Obviously - the 32bit uncompressed image is visibly smoother - but even the DXT5 doesn't have the artifacts yours has."

    Thank you very much, Scott! I had always been using the DXT5 ARGB 8bpp version and this was causing the issue. I just tried the 8.8.8.8 ARGB 32bpp version and the texture is nice, smooth and clean! I have no idea what these different options really mean, but I guess I will be using this option from now on. Thank you very, very much!

    "I have the program that suppose to convert DDS to Ace.but everytime I try it doesn't work."

    I don't know about "programs" to convert DDS to ACE. I use Photoshop to create a DDS file directly or to create a TGA file, which I then convert to ACE using TGA Tools, if I need an ACE file.
    Hi Borislav,

    Happy to help. Yeah - 32bit uncompressed can get pretty big but offer the best quality.

    Regards,
    Scott

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