> I've heard that the HLSL sliders should be available in the sliders menu, can anyone > confirm?
They are available and adjustable within the menu working as they should
If it might be some help I took 4 screenshots that show all the available options on the menu. These don't show up in MAME/MESS u1 compile because something's still "broken" at that time. I also have not compiled latest svn (yet) to see if things exactly match, but I suspect they probably do.