Number of mipmaps in a mipmap texture?

[James W. W. <ja...@wr...>]

In ir_texture_convert_mipmap, we have:

	// Work out how many images are contained in the mipmap
	if (theMipmap.useMipmapping)
		{
		numImages = 0;
		n         = E3Num_Min(theMipmap.mipmaps[0].width, 
theMipmap.mipmaps[1].height);
		while (n > 1)
			{
			n         /= 2;
			numImages += 1;
			}
		}
	else
		numImages = 1;

This caught my attention because the subscript [1] for the height 
seemed out of place.  But even if the width were the limiting factor, 
the formula seems wrong.  For instance suppose we start with n = 5. 
The first time through the loop, n becomes 2 and numImages becomes 1. 
The second pass makes n become 1 and numImages become 2, and then we 
exit the loop.  But numImages should be 3: sizes 5, 2, and 1.
-- 
   James W. Walker, ScriptPerfection Enterprises, Inc.
   <http://www.write-brain.com/>