Transparencies

Hi guys,
I'm looking for a little explanation that how are transpencies for window glases made.
In FS2000 bmp files I made with BMP2000.exe
How is it done with extended DXT3 Format files?
Regards to all
I'm looking for a little explanation that how are transpencies for window glases made.
In FS2000 bmp files I made with BMP2000.exe
How is it done with extended DXT3 Format files?
Regards to all