Using textures as alpha mask

Making holes with textures.

	To obtain this result...
	...use this alpha_map. I made it in the Gimp, all black and white, the whiter = the more transparent, unless you use 'Neg', as I did here [see below the setting in the material window]. Or make your own. :)
Use these settings in the texture window [F6]...

...and these in the material window. [F5].

Of note here is the use of 'Neg', in the second column to the right ; also the necessity to use the 'DVar' slider, at the bottom of the same column, for the texture to start blending with the color. In consequence, once 'DVar is less than '1.000', the alpha effect can be modulated through the use of the Var slider, at the bottom of the leftmost column to the right.