map_d in OBJ files

[mongoose7]

Looking at the OBJ loader, I see that the map_d texture is assigned to the first slot. This is not very helpful as the map_d texture is a B&W transparency (alpha) texture. By assigning it to the first slot (diffuse or albedo) the base colour is overwritten. So instead of seeing transparent_add_colour, we see a transparent_add_black! I'm just wondering if we can have it assigned to slot 3. Then we could have
texture0: diffuse
texture1: normal/bump
texture2: transparency
texture3: reflection.

[CuteAlien]

Can't say much without going over the format documentation. But moved the thread to the bug report forum so it stays a little bit more visible. If I ever find time again to continue working on the other .obj and .mtl bugs I take a look at it again (there is http://irrlicht.sourceforge.net/forum/v ... =7&t=48090 - and while working on that once I found further problems).