[KevinShort]

I went ahead and did a soft float compile so I could use it in my Debian chroot, so I've attached it below.

If you look at line 569 of the patch file you'll see this:

// this will cause the noise to shift around on the screen, amazingly this
+	// has the effect of causing the pixels to 'refresh' preventing darkening of
+	// the ghosting as dithered areas overlap.
+	uint_fast16_t dither_v = rand() % KOBO_DITHERMATRIX_HEIGHT;

You may or may not want this refreshing. Like it says, it moves the pixels around to prevent ghosting, but it's doing a bunch of tiny black>white refreshes every time the display updates. if you change line 572 to this:

uint_fast16_t dither_v = 0;

then you get more ghosting, but it's overall nicer to look at, IMO. I've attached two version below, one with the random pixel flashing and one without.