Consider BPM textures black as an alpha channel to generate transparency

[ebellumat]

Hello! Classic games from the Nintendo 64 era use black as a transparency alpha channel on .BMP textures, can you add an option to not generate black squares when these textures are found?

A checkbox to turn this on/off would be awesome.

[ebellumat]

Here's a texture where the black should be a transparency, just to help on the implementation, if you would like to implement. Thanks!

tempImgEd02BE.bmp.zip