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SDFs to overcome light leak? Convert shadow to SDF and go from there, doing a second pass to refine it

This man clearly never heard of the Black Mesa cautionary tale 😬

NANITE

thanks for the laughter and learning in every video!

1:08 "And you have the Near and Far" ... And Wherever You Are

Sounds like this would be perfect for Minecraft ESPECIALLY!

Did u publish it

ruclips.net/user/shortsygPrY3jAkJk?si=QOF2BL8SYoh4EhgI

So would I be correct to say: a scene with high-density polygons would actually run faster on early 2000's hardware? I mean, if all things were equal, like your modern card was handicapped to your 2002 card's speed/memory, and you weren't running any material effects but just simple textures or whatnot. Would those older systems comparatively be better at handling wasted detail because they just push the model entire model through regardless of size, whereas the modern systems optimize the rendering path, creating a (theoretical) point where the optimizations take up more time to run?

what are your PC specifications?

Cool, reminds me of voxel cone tracing with 3D clipmaps. It also has the same issues: light leakage, not good at perfect reflections but hopefully the new technique scales better and uses less vram. I'll have to look at the paper once it's released in its final form. Edit: Btw. for 2D you can make cone tracing work quite well and fast for GI. I only implemented the 3D version 8 years ago. A little bit surprised that it was hardly adapted since it can work quite well in certain types of games.

Cool, reminds me of voxel cone tracing with 3D clipmaps. It also has the same issues: light leakage, not good at perfect reflections but hopefully the new technique scales better and uses less vram. I'll have to look at the paper once it's released in its final form.

Gordon doesn't need to hear all this, he's a highly trained professional!

Ghost of Tsushima does a novel thing with the grass. Most games have some sort of navigation system. Ghost of Tsushima points the blades of grass in the direction you should be going. Likewise with the wind.

bro, not javascript💀

This was the first time i heard impostor and didn't think of amongus, thanks!

Sin(n) = a/c, cos(n) = sin(n+(pi/2)) or sin(n+90), tan(n) = sin(n)/cos(n),csc=??? , sec(n) = csc(n+pi/2) or csc(n+90), cot(n) = -tan(n+pi/2) or -tan(n+90)

Love it! I bet this or some more practical example would be interesting to 2kliksphilip too

I wonder if you could use AI to make the low polly models.

Did the Discord Channel disappear?

I've a better way: using Euler's sine and cosine formulas, derived from the Euler's identity, e^(iθ) = cos(θ) + i sin(θ). These formulas are exact, a'd use only complex numbers (in reality they're more simple than complex) and exponential.

It works because imposter sus

or, 512 angles between 0 and pi/2 in a lookup to lerp is a tiny bit faster, smaller storage, and is about 0.000000005% accurate

Amazing video. Thanks Simon.

Bobs Renderurgers

Some of the greatest useless math is used in game optimization.

you sound like will arnett with a cold

he sounds like bob from bobs burgers

Someone call Sebastian Lague!

1:50 Im confused... I thought that was raytracing Also remembered you can limit the max bounce count.

"They're _waiting_ for you Simon.. in the *dev* chamberrrr..."

I love this lighting - definitely an inspiration towards trying new things - you never know what might work!

that's why when teachng hardware architecture i tell my student just to not use float. And moreover, never ever make the mistake some language imply and call these "real" a 32bit word mathematically belongs to N no mater if it's float or integer or grey code or whatever Floating point is a lie

For some reason, even though you explained all it's doing, the end result looks better than what I would imagine if you didn't show it. Like I'd expect worse artifacts from this.

🤍

I straight up don't understand

I am curious to see what the bias is like for large scenes though. It reminds me a bit of "surfels" which were developed by EA if I remember correctly. It was an innovative technique but contributed a lot of bias to get real-time noise free images. The way this method is layed out, it seems like that's also going to be the case here, limiting it's effective use in real-time games with certain FPS goals

I love how you pretend not understand the concept as a way to ease the viewer into the explanation. Only thing I wonder is, how does this effect work with glass?

Could you do a video about different shadow techniques? From basic shadow mapping using hard coded projection params [like in directional shadows ortho(left: -10, right: 10, bottom: -10, top: 10, near: -10, far: 10)], through tight projection math, normal bias, texel size world space, etc. to CSM and VSM?

haha nice, i know quadtree but i didnt know where to start if you have no objects (of course except the camera which i know from you now and is on rethinking realy logical x)

avoid special cases, special cases are called unnecessary work, or claim to need to do unnecessary complex work, at all, ie re-solving a problem, with some complex stuff, just re-phrase the issue and solution, and you get the simplest possible radiance lighting algorithm, working same for all scenarios, if you need to reason about the number of samples in real time, meh, just raster every radiance cache and you are done, with same resolution uniform distribution everywhere, no denoising check nonsense, just one final calculation for each point, no travelling checks, yep raster instead of the ray samples, convert most of the primary rays to light a point to generalized raster, yep you can collect light with a spherical normalized raster cube view map. yep raster radiance cache can recursively collect bounce diffuse lighting also. and raster radiance is faster form of same distribution implemented in independent rays. instead doing stepping checks, just increase the number of rays from the actual point dramatically, and do it only once. sometimes you just cant interpolate. its not accurate actually. worse approximation only. teaching complex tech is without merit and only serves the market system, not the usefulness. yeah you did not fully check (think through) the complexity and simplified the tech to be the most useful. ie you just forced the math result, but did not make it simple. raster radiance collection does not have any ringing or leakage issues. you can check javarenderengine on github for whitepaper and java implementation for the cubemap view radiance collection method.

Okay…I’m on my fourth watch of this and I can feel myself *slowwwwwly* getting to grips with it, but even with a background in physics and maths (my degrees are in physics and electronic engineering) and a long career as a systems architect, I’ll be honest: I’m struggling. It’s a testament both to the PoE developers for the original idea and to Simon (who I follow) that this is penetrating my thick skull at all. Definitely not for the faint of heart but it’s worth watching over and over until it clicks because the end result is fucking gorgeous. Thanks Simon (aka Bob from Bobs Burgers) ❤️

This is really cool. Thanks for explaining it in an easy to understand manner!

The Penumbra Condition sounds like a nice title for a game

oh man i'm so hype to have bob belcher explain new and exciting graphics techniques to me

But Simrola,

Could just be me but it felt like the video ended a bit soon. Like I am not sure how you get from "layers of probes at different resolutions sampling lighting" to what you show at the end. Also is this global illumination? because it looks more like direct illumination with soft shadows and emmissive surfaces (which is addmittedley impressive in it's own right if it runs fast).

I did not understand this

Fun fact: over 2000 gpu's were used to find huge cactuses in minecraft

Thank you so much for sharing this knowledge! Super interesting video, as always