well the RGB to grey mapping is buggy and weird but just taking G and mapping it to greys seems to work without doing a lot of math

implemented a benchmark timer

now i can get a reading on just how slow this is 🙃​

#MacNICCC #retrocoding #demoscene

https://www.youtube.com/shorts/HMvQuTzt40Q

testing #MacNICCC on real hardware

there's a considerable amount of overdraw in the dataset

absolutely need some kind of double buffering

the Atari ST can't seem to emulate the page flipping hardware but i guess if we can detect the situation we could go tweak the shifter ourselves...

Mac SE/II are just going to be stuck with blitting back buffers

if you ever wondered why graphics were so slow on macs, this is a big reason why 🙃

https://youtube.com/shorts/_SIX1SU28Hg

okay i've been through all six volumes of inside macintosh and actually using hardware page flipping is weird and only vaguely documented there

the only code i can find is a modula 2 example on this dead web site?

https://web.archive.org/web/20210307032250/https://preserve.mactech.com/articles/mactech/Vol.01/01.09/ScreenBuffer/index.html

flipping a bit in the VIA is easy but you also have to re-launch yourself with a magic bit set to get the segment loader to give you the alternate framebuffer, because finder never will ugh #MacNICCC

filled polygons are go

next up, need do some RGB->grey mapping

and figure out how to do page flipping #MacNICCC

#MARCHintosh

okay we can correctly parse all data and display a wireframe

next step, fill those polys #MacNICCC

#MARCHintosh