TGA files

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The WoW game engine can load .tga-formatted graphics files directly instead of having to convert them to .blp files, so long as they follow a few rules:

  • Edge sizes must be a power of 2, but do not have to be square (256x256 is ok, 256x128 is ok, but 256x200 is not)
  • Images with transparency must be saved with 32 bits per pixel for the alpha channel

See Texture:SetTexture for more details