When reading a DirectX tutorial it states: "...for the second unit texture I load one that has a base pixel colour 127,127,127" What are they referring to when they say "base pixel colour". Is this the background color of the texture? If not, how do I set it and what picture editing tools allow me to set the base pixel colour? (does the SDK dxtex.exe tool do it?) Thanks in advanced!!

Thanks for the responses. I am using D3D.

Here are the exact words (this has to do with blending textures on the terrain):

"In my detail texturing, what you do is either set it for one pass multitexturing (using 2 texture units), and for the second unit texture I load one that has a base pixel colour 127,127,127. This is opposed to having a regular texture base pixel colour as 0,0,0. Now, any pixel colour that falls below 127 will darken the base texture, and any pixel above will lighten it. This is achieved through the texture colour op ADDSIGNED. The key is to make the repeat count for the base texture much larger than the detail texture. Ie. the detail texture units' uv coordinates should tile at about 16x the rate of the base texture in my case."