BLP Plugin [Photoshop] 1.0

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Supported Formats

Windows x64 Windows x86 (32-bit) Mac OS X 10.6 (Lion)+
CS4 6.0 CS5
CS5 7.0 CS6
CS6 CS CC
CC CS2 CC 2014
CC 2014 CS3  
  CS4  
  CS5  
  CS6  
  CC  
  CC 2014  


Installation

Windows

  1. Find your Photoshop Folder
    (x64) C:\Program Files\Adobe\Adobe Photoshop CS6 (64 Bit)\
    (x32) C:\Program Files\Adobe\Adobe Photoshop CS6\
  2. From that folder, go to \Plug-ins\File Formats\ (create "File Formats" folder if it doesn't exist)
  3. Drop the appropriate plugin (x64 or x86) in that folder. 
  4. Run Photoshop


OS X

  1. Find your Photoshop Folder
    e.g.  \Applications\Photoshop CS6\
  2. From that folder, go to \Plug-ins\File Formats\ (create "File Formats" folder if it doesn't exist)
  3. Drop BLP.plugin in that folder
  4. Run Photoshop


Supported Variants

It was my goal to support every variant of the BLP format that Blizzard uses in WoW - for both opening and saving. The end result is a total of 11 different combinations of compression and transparency. Below is a listing of these.

Alpha Bit Depths
This is the amount of detail allowed in transparency of your image.

  • 0-bit - No transparency at all
  • 1-bit - simple transparency, similar to GIFs. It's either transparent or not.
  • 4-bit - slightly better range of transparency, but will turn smooth fades into visible "steps"
  • 8-bit - This is the same level of transparency you'll ordinarily see in PNG/TGA formats, with 256 levels of transparency.


Compression Types

  • Indexed (256 Color) - Very similar to a GIF, as it uses a palette that can fit up to 256 colors, but BLP files have indipendent transparency. Indexed BLPs can make use of all 4 types of alpha.
  • DXT - This is the defacto compression type used in modern games, with the most popular format that uses this, being .dds. DXT compression gives you a better color range, with a slightly larger size, than indexed. It also supports all 4 levels of transparency.
  • DXT-5 - Would normally be lumped in with the above category, however it's the second DXT type that supports 8-bit alpha. The result is a bit better color, and a slightly larger file size than the 8-bit alpha under the DXT category.
  • Uncompressed - Very much like a Bitmap, with no compression to speak of. It can support either 0-bit or 8-bit alpha. This version is only used by Blizzard for sky textures, where every bit of color detail is necessary.

 

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SilverKat

  

So great to have this. Some tools just seem to make customization so much easier. Just started playing with this plugin but love it. Thank you for sharing this lovely gem.

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