English Amiga Board - View Single Post - 5 bitplane image with 16 colour non-repeat hw sprites?

a/b · 25 June 2022, 19:46

It's a matter of preference how hard you want to minmax this, I guess...
I'd split the temple into 16x16 blocks, edge blocks would be copied with a cookie cutter d=ac+b!c (don't need a mask for the entire picture, only specific blocks), inner blocks (merged horizontally into a single blit) straight up d=a, and blitter nasty turned on. Bottom part (wall) I'd do with a copper split, no need to blit that.
If it's fast enough to run at 50fps, blit ahead of raster beam and avoid double buffering.

25 June 2022, 19:46	#12
a/b Registered User Join Date: Jun 2016 Location: europe Posts: 1,043	It's a matter of preference how hard you want to minmax this, I guess... I'd split the temple into 16x16 blocks, edge blocks would be copied with a cookie cutter d=ac+b!c (don't need a mask for the entire picture, only specific blocks), inner blocks (merged horizontally into a single blit) straight up d=a, and blitter nasty turned on. Bottom part (wall) I'd do with a copper split, no need to blit that. If it's fast enough to run at 50fps, blit ahead of raster beam and avoid double buffering.