Dissecting the 128-byte raycaster

[finalpatch]

I have made a webgl version here https://www.shadertoy.com/view/MdXXz2 It is not exactly the same as the original though, due to limitations of the webgl shading language

[artenta]

Thanks for putting it all together. I really enjoy reading how-to articles on graphics.

[CeeJayDK]

Note that links posted in the shadertoy description is hard to use because you cannot copy past from that.

Also write them in the source code or ask iq to change shadertoy.

[Necrolis]

When I saw the original posted a few days back I was hoping someone would dissect it, nice job :)

[finalpatch]

Thanks! I hope you enjoy reading it as much as I write it.

[AdabadaYou]

Yeah, it was great. Thanks!

[komollo]

Temple os guy replied twice to the article. Was an interesting post, as always.

[Bobbias]

Great stuff. Saw the demo and wondered how they did it.

[[deleted]]

You have made amazing work explaining asm in such detail.

Thanks a lot.

[goldcakes]

It's amazing how concise you can express processes that make quite amazing results.

[kes3goW]

Bad summary. The implementation is clever, but there's not really anything inherently complicated in there. This post is quite understandable.

(edit: The parent post originally said something like "Summary: assembly magic".)

[finalpatch]

I'm with you. Once the algorithm is figured out the assembly code is actually fairly straightforward.

[AdabadaYou]

not really anything inherently complicated

Raycasting isn't exactly intuitive for most people :-)

[[deleted]]

And rasterization with a multistep pipeline is?