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Was there any hardware/software which actually did this? I can't think of any games console hardware which allowed a combination of more than two shears by mod
by matja 4y ago
Was there any hardware/software which actually did this?
I can't think of any games console hardware which allowed a combination of more than two shears by modification of sprite/bg offset registers, it was either X, Y, or X+Y, but not X+Y+X.
It seems to me that using dx+dy 8.8 or 16.16 fixed-point coefficients for an inverted rotation matrix would by faster in terms of only one read+write required per pixel, rather than multiple (at least that's how I always saw rotations in the VGA mode 13h days, maybe things like the Amiga blitter could do it better?).
- cma 4y agoDidn't lots of consoles have a small scratch memory you could blit into and out of, making it possible to do in multiple steps? https://www.sega-16.com/forum/archive/index.php/t-21390.html https://www.sega-16.com/forum/archive/index.php/t-21390.html