l'empathie mécanique @dpwiz@qoto.org

The cat is out of the box!

Figure 3. Fuck around
Figure 4. Find out

BVH is love, BVH is life 📦

Ramped up samples, bounces, and resolution and the rendering time is still less than the first attemts with the linear traversal of all objects in the world.

Converting interaction event into a single-constructor with additive, multiplicative, and scatter components helped a little too.

Also, skipped ray bouncing when attenuation drops below 10-bit range. The limit practically remains to prevent infinite bounces between perfect mirrors.

Cornell box, here I come!

Found this little gem while testing UV generation code.

(The UVs came out wrong, though.)

Textures are just `Material a` combinators concerned with producing stuff at hit points.

Since the Material is a Monad now, no need for special cases for colors and then another bunch of combinators for materials.
A sampler can be used to pick entire materials if needed.
(Ooops, I actually CPSd a little...)

#haskell

`instance Monad Material where`

Sitting on my hands to avoid going full CPS on it (again)

#haskell

white_noise.jpg

OTOH, the human visual system is quite shite^W noisy in low light too. And that's even with all the built-in "neural denoising".

Maybe if it's neurons were activated by light instead of being suppressed (yes, it's inverted in there too) there would be far less noise. But that may push it out to bright light instead. And being activated most of the time will give higher levels of oxidative stress/faster degradation.
Tradeoffs everywhere...

Been fever-dreamin' some DIY material layering and light sources (before I get to the chapter 7 of the second book).

The amount of noise from emissive materials is.. ugh. Apparently this is why we bother with "light sources" instead of just dropping some light bulbs here and there.

Now I wonder what artifacts should be there for this to count as a successful kata/exercise.
Should I be able to reproduce it from scratch now? Teach how to do it?
Publish some packages?
Blog about how silly it is to use C++ for teaching stuff?
Take some jabs at course material (some quirks survived into v4.0 of it)?
So many options, so little time... What should have best return on time invested?

Been tracing some rays this weekend

https://gitlab.com/dpwiz/rtow

#Haskell

Wow. Did someone just voted from the rooftops?.. Does that mean that everything else failed?

> How unexpected was the internal combustion engine! How surprising! What a creative act, to violate the rule that you shouldn't start a fire inside your vehicle!

Kessler-Kaspersky Syndrome: It is impossible to access orbit as the newly-launched object will get instantly pwned by swarms of previously infected satellites, now orbital malware platforms.

Now that every PC ~and their dog~ has had USB-C/USB3 ports for a while It is strange that we can't use it for direct connection easily and still have to bounce link off some noisy channel first.

Like, come on, the devices are sitting next to each other. With a single symmetric cable we could be having secure 5Gb+ connections right away!