DDS DXT1 bleeding edges on lightmap

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ok, but if u use a lightmap 1024x1024 in bmp, tga, png, jpg or whatever the size of the file varies but still uses over 4mb in vram. the uncompressed 1024x1024 dds file is 3mb and would only use this size in vram... so we have 1/4 less... and on 512x512 its only 1/2 vram usage

cheers, chi