normal glen
very simple single threaded mandelbrot renderer, that when it reaches a member of the set, recurses until it finds one that isnt, with some blurring to look cool. will definitely get around to multithreading (and potentially SIMD) at some point because performance is lacking
gilded glacier
super cool 🙂
I'm a huge fan of mandelbrot renders that provide unique visuals for the interior of the set
normal glen
yeah, i didnt manage to come up with much when i was gpu rendering, but cpu rendering allows for this sort of thing
gilded glacier
Regarding optimization, multithreading will help a lot (it's embarrassingly parallel) and GPU rendering would help a lot too. You can also look into http://www.mrob.com/pub/muency/marianisilveralgorithm.html which speeds things up a ton.
normal glen
also, its resolution agnostic, so it looks the same (albeit noisier) at lower res
picture there is 16k and took ~11 mins
on my i5-10400f
normal glen
Regarding optimization, multithreading will help a lot (it's embarrassingly para...
i think ive seen that before, it seems hard to implement though lol
gilded glacier
it's not too bad, it's just recursive 🙂
normal glen
oh sort of divide and conquer style?
gilded glacier
there are some tricky aspects, easy off by one errors
normal glen
oh sort of divide and conquer style?
that makes it a lot easier if thats the case
and still pretty paralelisable
gilded glacier
yep, still very parallelizable
normal glen
im just wondering how itd be implemented alongside the inside recursion
because you have to worry about things outside the squares, not just inside
gilded glacier
you would probably only use this for the exterior
everything in the inside you'd need to do individually
normal glen
yeah that makes more sense
though the outside only takes seconds
i should probably send the code
meh i need to polish it first
eg output jxl rather than ppm (just raw pixels)
gilded glacier
it's understandable that the outside is much faster
normal glen
you can see the difference in size, even with lossless compression
normal glen
it's understandable that the outside is much faster
the vast majority is <5 iterations, the inside is 1k+
gilded glacier
indeed, I was doing some mandelbrot rendering a while back and also outputting to ppms and it was a lot 🙂
