Animated Sparse Voxel Octrees: Introduction

[@dennisrkb]

@1776Phoenix1986 The octree is static and never altered. The animation is realized during the rendering phase, when you have to compute the voxel's final screen positions. The voxels simply are drawn at the correct (the transformed) position. For dynamic scenes, every dynamic object must be represented by its own octree, which can then easily be moved as a whole.

[@dennisrkb]

@noobenstein No, I haven't designed my octree data structure to be dynamic (alterable), but rather focused on the animation technique. Though it should work with a dynamic octree as well as it does with a static one.

[@dennisrkb]

@SappYoda Skinning would be done by painting the bone weights on the voxel model. So, if your voxel model has a high resolution (and therefore large surface) it might take long.

[@dennisrkb]

@marshviperXwins My voxel structure uses ~50bytes/voxel which is way too much. But state of the art voxel engines (which also store lots of visual data associated with their voxels (like color, texture coordinates..)), manage to compress the memory footprint of a voxel down to ~1bit/voxel. So it should be possible to compress bone weights, too. Multiply the size of one voxel by the total number of voxels (in this video ~3M).

[@dennisrkb]

Erfolgreich abgeschlossen, danke der Nachfrage :-) Für Aliasing und ähnliches eignen sich Post-processing-Techniken, siehe AtomontageEngine. Voxel erlauben das Speichern beliebiger visueller Attribute, u.a. Alpha. Das harmoniert dann sehr gut mit einem Raycaster als Renderer - verfolge einen Strahl nur bis der akkumulierte Alpha-Wert 1 überschreitet. Das ist in einigen Demos von GigaVoxels sehr gut zu beobachten.

[@johnesco]

But does it have unnnnnlliiiimited deetaiiil?

[@decrodedart2688]

John Escobedo hahahahaah

[@IceXuick]

Very interesting! Never seen animated voxels like yours! Keep it up! Hopeflly this is going to be the greatest en biggest step in relatime 3D/rendering and interactive(Game)design!!

[@dennisrkb]

@omma911 The voxels are directly influenced by the skeleton.

[@TheMagicToyChest]

I personally think the hardware holding volumetric graphics back is simply the memory footprint, rather than the video cards or processing power, and once the storage methods improve and larger memory capacities become available voxels may be able to completely replace polygons and tris.

[@tiagotiagot]

Unless you got a very high resolution (or a very tiny screen) you will still see jaggies in the diagonals and curves if you're just doing one voxel per pixel.

[@dennisrkb]

~90MB. The data structure I used is very bad in terms of memory efficiency.

[@dennisrkb]

@TheExpertx4 The drop in frame rate comes from the shadow mapping which requires the whole voxel octree to be traversed twice (since it's rendered twice). Anyway, I've written the voxel renderer only for illustration purposes. The animation technique itself can be implemented with every kind of renderer. I'll cover that in the next vid - working on it.

[@Themindforest]

Wow, looks really cool!

[@staudinga]

Amazing, keep up the good work!

[@dennisrkb]

@SarahC2 I've updated the video description in all my videos. Hope it's easier to find now.

[@Jkauppa]

try combining gigatextured triangles to a sparse voxel octree framebuffer and draw everything with breadth first in the octree, or just simple raster all or just simple testing raycast

[@Jkauppa]

also source pixel cube map path tracing, and n^2 sphere cube map path tracing

[@TheMagicToyChest]

How much memory did this model take up?

[@SappYoda]

@omma911 it can't be a pain to animate since it uses skeletal animation. It may be a pain to skin though.

[@YYYValentine]

Hi! How do you render the voxels? Are those raycasted, or made by tiny triangles? Thanks!

[@dennisrkb]

A custom rasterizer in CUDA with similarities to QSplat

[@RealationGames]

There is like stepless LOD. That is very useful to gain all around optimization. Very cool, I'm thinking that this might someday(atleast 5-10 years) challange polygons. Amazing, this technology needs few more another breakthroughs for the most common problems.

[@volchonokilliR]

make it challenging~

[@volchonokilliR]

Wow- you rock!

[@omma911]

Does it animate the voxels by an underlying, skinned polygon object, or is it just loading different keyframes like in those classic Quake 1+2 .mdl editors?

[@benjohn75]

Great stuff - this very much seems like the missing link for voxels. Also, being able to tile a voxel "texture" over a deformed 3d grid to model ground and the like, will be very important, I think.

[@SarahC2]

Thank you very much!

[@HuebietheGuru]

Meinen Glückwunsch. Wie sieht das denn mit der Performance aus? Ich stelle mir das doch sehr rechenintensiv vor. Kann man Informationen der Voxel (wie eben transparent - coverage) auch zu Cluster zusammenfassen? Sorry falls es stümperhaft klingt aber ich bin sehr neugierig auf dass was noch kommt :-)

[@omma911]

@radulphi very impressive, thank you.

[@SarahC2]

@radulphi , I'm looking for the download link but I can't find it! Could you point me towards it please? xx

[@HuebietheGuru]

Hm. Gute arbeit. Wie stehts um deinen Bachelor? :-) Mich interessiert am meisten wie man das Aliasing wegbekommen kann/will. Pures hochfahren der Auflösung scheint ja nicht die Lösung zu sein - vor allem in anbetracht der heutigen Hardware. Wie stehts mit Alpha-Voxel um bspw Wasser zu animieren. Ginge das mit dem gleichen Prinzip??

[@DrunkencoderPayk]

Schon mal versucht die Rays einfach leicht tanzen zu lassen? Das ergibt auch eine art kantenglättung, und ein natürlicheres bild. ansonsten bin ich sehr beeindruckt!

[@YourMotherx900and26]

Voxels are indeed the future, but the methods are a bit difficult as of now, it would seem.

[@pippettoerparaculo4374]

I want a voxel animation software now!

[@pippettoerparaculo4374]

***** No!

[@pippettoerparaculo4374]

***** I'll have one for christmas, you're just jealous

[@johnsherfey3675]

Anton Zuykov you want to hear a cooler story? Make a paper / presudocode for it and I will make a render to blow your socks off. >:p

[@omma911]

This can hopefully be implemented in today's 3D Packages like Maya/MAX/Motionbuilder. Otherwise I presume it's a pain in the ass to animate it. We graphic artists are quite lazy and learn about 2 programs max. ;) I love those innovations every 2-3 years in rendering techniques. Nvidia/ATI New World Order has to come to an end someday.

[@tfg_8564]

This was heavily used in DOOM(2016)

[@dennisrkb]

I doubt that :P

[@tfg_8564]

I think it was used for the environment and not the actual models though

[@godbennett]

go work for bruce del?

[@anothergol]

Nice

[@adj789]

@1776Phoenix1986 did not know that

[@godbennett]

so it seems

[@Badhabitsjay]

Until they prove themselves otherwise with clear first hand demonstrations to individuals within the industry that have notable weight to their words they should be assumed to be a scam. Remain sceptical of everything that sounds too good to be true until it is proven. To be anything else is idiocy.

[@adj789]

looks like point cloud is still superior

[@ShamelessHorse]

Try googling "Euclideon Geoverse", they are not a scam they have been working on that project.

[@BoredInfidel]

Shame that his company is a scam, though.