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   DXT Compression Plugin


    This file requires Direct3D 8.0 or higher  to be installed.


    Copy the file dds.8bi to

    \Program Files\Adobe\Photoshop 5.5\Plug-Ins\File Formats  or

    \Program Files\Adobe\Photoshop 6.0\Plug-Ins\File Formats

    this also works with Paint Shop Pro


    Use "Save As" and "DDS" to save compressed files
    Allows dropping .dds files into PhotoShop

    You can save files that are non-power of two if they are uncompressed, but dxtex will not be able to read them.



Save Format

    Chooses which format to save the image as.  This is affected by Options and Fade To Color below it.

    DXT1, DXT1 with alpha, DXT3 and DXT5 are compressed formats

    DXT1's compression ratio is 8:1

    DXT3 and DXT5's are 4:1 compression ratio

    Other formats are uncompressed

        16 bit (4444) - 4 bits for alpha, red, green and blue

        16 bit (1555) - 1 bit for alpha, 5 for red, green and blue

        16 bit (565) - no alpha, 5 bits for red, 6 bits for green, 5 bits for blue

        32 bit RGB - 8 bits for alpha, red, green and blue

        24 bit RGB    - 8 bits for red, green and blue 

        16 bit (0:5:5:5) 5 bits for red, green and blue 

        8 bit index  - create a paletted texture RGB or RGBA

 

   

    Options

        DitherColor - jitters image so 16 bit image look better. dithers then generates the MIP levels.

        DitherEachMIP - Dithering applied to each MIP level

        GreyScale - set if image is all or mostly a grey scale

        Binary Alpha - treats alpha as one bit only for MIP map generation

        Alpha Border - set the border of the texture to alpha for every MIP level

        Fade To Color - gradually fades from the image to a selectable color over n MIP maps.

        Normalize MIP maps - set this if you are exporting a normal map

        DuDv - set this if you are exporting a DuDv map

        

    Override

        previews the xbox version of DXT1 

    

    Preview Options

        Alpha Blending - enables/disable alpha blending using the alpha channel of the texture

        Show Differences - compares the full precision image with the modes that are selected

        Enable Filtering - enables disable all texture filters

        Mip Mapping - enables/disable MIP mapping 

        Anisotropic - Enables/disables anisotropic filterng

 

 

Fade MIP maps

    You can fade each MIP maps to a specific color.  

        Fade Color button selects the color to fade to.

        Blend Amount lets you specify a percentage fade for each MIP level.

        Start at MIP.  delays fade until a given MIP level

        Specify allows per MIP map level control of the fading.. It brings up this Dialog:

 

MIP 0 (base image cannot be faded)

Specify what percentage of the fade amount for each MIP level

Set numbers allow up to 10 different fade profiles to be saved

Controls are disabled if there is no MIP map present.

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