T3D 1.1 Final - $pref::PSSM::smallestVisiblePixelSize doesn't work - CONFIRMED (THREED-1982)

Thread Body:

Build: 1.1 Final

Platform: Windows XP 32bit

Target: Rendering

Issues: Setting $pref::PSSM::smallestVisiblePixelSize to any number (from 0 to 10000) doesn't have any effect on the rendering of the PSSM shadow.

Steps to Repeat:
1. Open the deathball FPS example
2. Open the console and show the gfx and shadow metrics
3. Write $pref::PSSM::smallestVisiblePixelSize = 10000;
4. Check that there is no change to the PSSM shadows rendering, nothing is being culled.

I also tested it with several different levels from our games and no results whatsoever.