Hi,

Really nice to see initiative to continue development on the (actually widely used) SOIL library!

For the below function:

SOIL_load_OGL_HDR_texture
	(
		const char *filename,
		int fake_HDR_format,
		int rescale_to_max,
		unsigned int reuse_texture_ID,
		unsigned int flags
	);

the parameter rescale_to_max seems undocumented. Looking through the code it seems to be used for the formats that are alpha-premultipied (ie not RGBE). What I could find is this:

// image_helper.c
int RGBE_to_RGBdivA(...)
{
    /* convert (note: no negative numbers, but 0.0 is possible) */
    if( rescale_to_max )
	{
		scale = 255.0f / find_max_RGBE( image, width, height );
	}
}
[...]
int RGBE_to_RGBdivA2(...)
{
    /* convert (note: no negative numbers, but 0.0 is possible) */
    if( rescale_to_max )
	{
		scale = 255.0f * 255.0f / find_max_RGBE( image, width, height );
	}
}

I'm not really sure what it means, but it seems to me like rescale_to_max is intended as a boolean flag to somehow rescale the image by its maximum luminance, or something different...

Would it be possible to give a clarification for this, and possible also some documentation to the SOIL_load_OGL_HDR_texture interface?

Thanks! :)