#VistaPro
Clint:
PMFJI, but I've noticed a bug in the dithering routines used to generate
fractal terrains on the Amiga.
I was rendering a top-down view of a wide expanse of terrain (for my
RingWorld animation which I never finished. :^(, and I notice the
dithering in the left top quadrant is always worse than the other
quadrants of the image. The uppper-left quadrant shows markedly less
dithering than the other quadrants. This is possibly a result of the error
propogation in the dithering algorithm. (With the settings I was using,
each polygon was rendered at about 2×2 pixels, with about a 1 pixel
overlap. Since the polys are rendered in bands, the overlap didn't cause
any problems in any quadrant but the upper-left. In that quadrant, the
dithering was noticably different from the remainder of the picture –
there was less 'randomness'.
It's a pretty weird little bug, and I can see as to how it wouldn't effect
many images, but it was annoying nonetheless. I thought you might like to
be made aware of the artifacting. (I can't really call it a bug per se.
:^)
Thanks,
Erik Flom