What is Ray Tracing?

2018 ж. 6 Қыр.
1 264 157 Рет қаралды

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Ray tracing has made headlines lately as the rendering method of the future for games - but what exactly is it, and how can it make your games look more realistic?
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Пікірлер
  • *you get a friend named Ray* ... and then follow him without knowing

    @FizzleFX@FizzleFX5 жыл бұрын
    • Lol 😆

      @maj113@maj1135 жыл бұрын
    • That profile pic 😎👌

      @W1zardRyan@W1zardRyan5 жыл бұрын
    • Not just follow him, also trace him as well.

      @ninjasiren@ninjasiren5 жыл бұрын
    • @@W1zardRyan , i link it to you, tomorrow... ;3

      @FizzleFX@FizzleFX5 жыл бұрын
    • @@FizzleFXheheh thx homie

      @W1zardRyan@W1zardRyan5 жыл бұрын
  • What is Ray Tracing? Me: *Expensive*

    @abdur-raheem5316@abdur-raheem53164 жыл бұрын
    • ARJ for know!! GIVE IT TIME BRO!!

      @isaacmettle@isaacmettle4 жыл бұрын
    • It's only expensive if you want it real time My computer's 12 yrs old and I've done quite a few ray-traced 3D renders.

      @retrodragon2249@retrodragon22494 жыл бұрын
    • Haha gpu money huhuhuhu

      @Lallint@Lallint3 жыл бұрын
    • @@retrodragon2249 Ah that's so old- I ray trace with my CPU oops I path trace with my CPU

      @daringcuteseal@daringcuteseal3 жыл бұрын
    • One-Year Later: Sold out every where

      @e21big@e21big3 жыл бұрын
  • "Just buy it" - Tom's Hardware

    @TechRide.@TechRide.5 жыл бұрын
    • "NO" - Gamers Nexus

      @cyrenarkade@cyrenarkade5 жыл бұрын
    • "NO" - Tom, THE Tom, formerly of Tom's Hardware.

      @nickpickerwi7787@nickpickerwi77875 жыл бұрын
    • "It JuST WorKs" - Nvidia.

      @guyincognito566@guyincognito5665 жыл бұрын
    • "NO..speaking of which, why didn't you guys use the benchmark results for AMD graphics cards that I sent you?" - Igor of Tom's Hardware Germany.

      @shirshanyaroy287@shirshanyaroy2875 жыл бұрын
    • 4Head

      @No-bb1jq@No-bb1jq5 жыл бұрын
  • Graphic keeps getting better and better while the physics are still bad

    @mal4797@mal47975 жыл бұрын
    • Yes and no. If u for example walk on grass the grass moves with u same for high winds or for example if u swim or u jump to water u see the psychics of moving water. I don't think the problem is the psychics is. More likely the graphic is almost on the limit now is only one step over that and this is real life footage graphic that the graphic looks so realistic that u can't see a difference between for example rocks in game and rocks in real world...

      @strohhuttv8848@strohhuttv88485 жыл бұрын
    • Depends on the engine the game uses

      @Trackrace29582@Trackrace295825 жыл бұрын
    • ​u need to see that new unreal engine destruction demo

      @radumirceabunica7492@radumirceabunica74925 жыл бұрын
    • Play a game a 15-year old game and tell my physics aren't 10x better at least.

      @kvmairforce@kvmairforce5 жыл бұрын
    • check out project Borealis, the physics are great!

      @josephnichols2064@josephnichols20644 жыл бұрын
  • But i am in a dark room with no lights on

    @visibleconfusion9894@visibleconfusion98945 жыл бұрын
    • The closet?

      @nathanemerson9916@nathanemerson99165 жыл бұрын
    • Can we get 5000 subscribers with no videos? Your phone emits light or the monitor your using.

      @randominternetuser1681@randominternetuser16815 жыл бұрын
    • Southeast Africa?

      @lingalithumanjolo6653@lingalithumanjolo66535 жыл бұрын
    • I got the other problem, the lights are on but nobody is home

      @iceman11766@iceman117665 жыл бұрын
    • Your monitor?

      @vallii3012@vallii30125 жыл бұрын
  • You mean Wallet Tracing?

    @rei_2645@rei_26455 жыл бұрын
    • silverhelmet61 wallet taking*

      @shortsentral@shortsentral4 жыл бұрын
    • Wallet Vaporizing*

      @abcdefghijklmnopqrstuvwxyz1062@abcdefghijklmnopqrstuvwxyz10624 жыл бұрын
    • Icon matches humour

      @dazza2350@dazza23503 жыл бұрын
    • @@dazza2350 That makes no sense

      @mydickisincrediblytinyandi7380@mydickisincrediblytinyandi73803 жыл бұрын
    • xD

      @Brahvim@Brahvim3 жыл бұрын
  • I'm here because of ray traced minecraft videos

    @fayce7717@fayce77175 жыл бұрын
    • Me too

      @sinabaur9150@sinabaur91505 жыл бұрын
    • Yes

      @davidperrii@davidperrii5 жыл бұрын
    • Me too bro

      @Valspartame_Maelstrom@Valspartame_Maelstrom5 жыл бұрын
    • Same

      @goose9246@goose92464 жыл бұрын
    • Who isn't?

      @agnomilted5206@agnomilted52064 жыл бұрын
  • how about games with no dlc and good storyline rather than having a super reflective spoon

    @rohitbankar7579@rohitbankar75795 жыл бұрын
    • What about both?!

      @Fergesslich@Fergesslich5 жыл бұрын
    • Who doesn't love a super reflective spoon?

      @svd355@svd3555 жыл бұрын
    • There is no spoon..

      @ValentineC137@ValentineC1375 жыл бұрын
    • No wait guys, I found it! 🥄

      @flameshana9@flameshana95 жыл бұрын
    • NVidia doesn't create games. And no company, that's actually creating games, is making super-reflective spoons.

      @KindlingEffect@KindlingEffect5 жыл бұрын
  • they said it's easy for game developers to use RT you can just throw it in there, if that's true i just need one thing, RT for older games, New Vegas will be a good start.

    @LeoCoot@LeoCoot5 жыл бұрын
    • GTA 4 raytraced would be gorgeous

      @waynepayne9875@waynepayne98753 жыл бұрын
    • @@waynepayne9875 kzhead.info/sun/iNNwntlsnYWNo3k/bejne.html even better... gta 5, it's like 4 but with gameplay and (characters?)

      @jakedill1304@jakedill13043 жыл бұрын
    • @@waynepayne9875 but for real, this shit is pretty mindblowing albeit raw and messy as a throw in without currating the environment... still, looks better with than without, and that says something...

      @jakedill1304@jakedill13043 жыл бұрын
    • @Tyler Russell I'm pretty sure they have Ray tracing for resident evil 2 in the sweet effects mod, or excuse me reshade or whatever the hell it is now the All MOD... I guess the real question is when is Adobe going to buy it reshade and add it as a plugin for Photoshop...

      @jakedill1304@jakedill13043 жыл бұрын
    • @Tyler Russell what differentiates between whether it uses the RT cores or the regular processing? I mean theoretically you could configure it to use those cores right or is that something that only Nvidia does? cuz that would be an annoying licensing issue in general

      @jakedill1304@jakedill13043 жыл бұрын
  • 2018: Nidia & AMD: Raytacing!!! Game Devs: BattleF13ld V! 2019: Nvidia: RTX 2080ti!!!! Game Devs: Minecraft!!!!

    @WADEY216@WADEY2165 жыл бұрын
    • This is why I’m here

      @fgvcosmic6752@fgvcosmic67525 жыл бұрын
    • And also Quake II!

      @solarstrike33@solarstrike333 жыл бұрын
    • 2020- Nvidia: RTX 3090 Ti Devs: Minecraft RTX at 8K 60fps

      @destiny_02@destiny_023 жыл бұрын
    • Quake Quake going in to attack

      @cloudnine4157@cloudnine41572 жыл бұрын
    • Is ray tracing in MicroSoft Paint possible? kzhead.info/sun/qdNyqtiEkGVqoWg/bejne.html

      @Lordecai@Lordecai2 жыл бұрын
  • KZhead is getting really brave now with these double ads

    @franticskunk2461@franticskunk24614 жыл бұрын
    • Sort of makes you wanna fro' up, don't it?

      @prairiewolfedogg@prairiewolfedogg4 жыл бұрын
    • I close the video back to back and it eventually fks off

      @yolocholo9611@yolocholo96113 жыл бұрын
    • @@yolocholo9611 thats exactly wat i do but shit it be popping up 10 times sometimes and the way u said " it eventually fucks off"😂

      @waraichs40@waraichs403 жыл бұрын
    • Yeah sucks

      @fpshimanshuyadav171@fpshimanshuyadav1712 жыл бұрын
  • Would you make video about NV-Link as well?

    @allansh828@allansh8285 жыл бұрын
    • I second this

      @andrubernardo3436@andrubernardo34365 жыл бұрын
    • Maybe they should only once consumers can get it. They haven't even tested it yet at LMG.

      @nextlifeonearth@nextlifeonearth5 жыл бұрын
    • Oh, please do, Linus!

      @Bobcat665@Bobcat6655 жыл бұрын
  • Thanks for making this video. I was confused on the topic

    @TheRealBleach@TheRealBleach5 жыл бұрын
    • It’ll probably be one of the greatest things to happen in gaming but it’s just not ready yet and anything under a 2080ti imo will be useless

      @rolan5948@rolan59485 жыл бұрын
  • 2018: Why are we Tracing Ray? 2020: PS5- I FOUND RAY!

    @NathanJohnson1999@NathanJohnson19995 жыл бұрын
    • Xbox Scarlett tho

      @samuelaurora3632@samuelaurora36324 жыл бұрын
    • @@samuelaurora3632 yuck

      @MyDbzfan9000@MyDbzfan90004 жыл бұрын
    • MyDbzfan9000 I know I’m ugly but f you man

      @samuelaurora3632@samuelaurora36324 жыл бұрын
    • @@MyDbzfan9000 guess what? xbox series x is more powerful than ps5 so hell yeah

      @SAMISHUKRI@SAMISHUKRI4 жыл бұрын
    • nintendo boys

      @bonedoggle@bonedoggle3 жыл бұрын
  • Could've been good to also add a frame where the ray bounces from an object to another object,and then to a light source, to show that it's not just a camera->1 obj bounce->light kind of thing. But overall, straightforward explanation.

    @JacopoMTK@JacopoMTK5 жыл бұрын
  • Very interesting, Linus, thanks for explaining that! I've been hearing the term for years, wondering what it meant, thinking about looking it up someday and then always forgetting or never getting around to it, and this video explains it pretty well!

    @HelloKittyFanMan.@HelloKittyFanMan.3 жыл бұрын
  • Funny how u show Minecraft as an example of no ray tracing but now we have ray tracing in Minecraft lol

    @ly_is_music@ly_is_music5 жыл бұрын
    • Mathias Gaming kzhead.info/sun/n8tunc6De2JpZ68/bejne.html

      @hystericallover5989@hystericallover59895 жыл бұрын
    • actually u dont, u just have path tracing

      @ethanclark9565@ethanclark95654 жыл бұрын
    • @@ethanclark9565 No it doesn't.

      @Gr8humanilation9TV@Gr8humanilation9TV4 жыл бұрын
    • Gr8humanilation9TV it does now

      @ArmandoHernandez-ch4ul@ArmandoHernandez-ch4ul4 жыл бұрын
    • @@ethanclark9565 path tracing is just glorified ray tracing (rays bounce of objects instead of returning immediately)

      @God-ch8lq@God-ch8lq4 жыл бұрын
  • The old method is not necessarily just rasterization. It is a part of the vision pipeline (often the end). You would write a lighting model for your object. This result in bad shadow, reflection and refraction (although techniques such as shadow mapping does work to a degree).

    @jackshi9500@jackshi95005 жыл бұрын
  • As a Blender Cyclic user, I love ray tracing

    @soejrd24978@soejrd249785 жыл бұрын
    • Cycles*

      @NotHugs@NotHugs5 жыл бұрын
    • Cycles isn't raytracing. Classic Blender internal is raytracing. Cycles it pathtracing. The difference is that rays bounce in path tracing, they just end when you hit something in raytracing

      @whydoineedausername1386@whydoineedausername13865 жыл бұрын
    • I would say path tracing is also a form of raytracing. It's just a far more sophisticated, realistic and expensive form of ray tracing than for example primitive whitted style raytracing. The main difference is that in pathtracing we trace a much higher number of rays.

      @philmsproduction@philmsproduction5 жыл бұрын
    • Correct, path tracing counts under ray tracing.

      @jm27232@jm272325 жыл бұрын
    • Have you used EEvee yet?

      @fleshTH@fleshTH5 жыл бұрын
  • love this channel so far! super useful and cool info in not a lot of time! well done

    @NickMig@NickMig5 жыл бұрын
  • In America, you trace ray. In Soviet Russia, ray trace YOU!

    @bibasik7@bibasik75 жыл бұрын
    • @ARCH - FX maybe because we're not in 2011 anymore

      @Riquelme4232@Riquelme42325 жыл бұрын
    • You win For worst use of tired old joke.

      @TheFreshPeddler@TheFreshPeddler5 жыл бұрын
    • @@Riquelme4232 >2011 I guess we all know when you started browsing the internet.

      @hayaokakizaki4463@hayaokakizaki44635 жыл бұрын
    • Dead meme.

      @quarryspanish@quarryspanish5 жыл бұрын
    • God this joke is so dead and bad

      @lennywhere@lennywhere4 жыл бұрын
  • who else knows "a lot" about ray tracing but still clicked on the video because its linus

    @MrCasatony@MrCasatony5 жыл бұрын
    • no matter how much you think you know, there is always more to learn. Even from simplified sources brains love to trick themselves into thinking they are perfect and all knowing

      @frosty9392@frosty93925 жыл бұрын
    • NEVER use quotation marks for *_emphasis_*

      @unlokia@unlokia5 жыл бұрын
    • you're not my "real" mom!

      @frosty9392@frosty93925 жыл бұрын
    • @@frosty9392 100% true

      @9yearoldepicgamersoldier129@9yearoldepicgamersoldier1295 жыл бұрын
    • me

      @josephnichols2064@josephnichols20644 жыл бұрын
  • I just got an RTX capable graphics card after my old RX 580 started to die, and, it's freakin amazing.

    @kurisu7885@kurisu78852 жыл бұрын
  • I love how he just slides in his advertisements, gets me every time.

    @ibsn87@ibsn874 жыл бұрын
  • Once the api is taken fully advantage of, 3d rendering software is going to see a massive jump in rendering performance. I would think game developers may want to only use the technology to enhance specific parts of the game for now, while leaving the actual play rasterized for performance. Only time will tell.

    @kstricl@kstricl5 жыл бұрын
  • 2019: Ray Tracing 2020: Contact Tracing.. lol

    @ravenuegg@ravenuegg3 жыл бұрын
    • Best comment on here...dude ! Hilarious

      @ktowngypsyou8125@ktowngypsyou81253 жыл бұрын
  • Jiggarays. JUST BUY IT

    @rhoharane@rhoharane5 жыл бұрын
    • The more you buy, the more you save

      @Krisztian5HUN@Krisztian5HUN5 жыл бұрын
    • jijarays yo mean

      @elsholz2365@elsholz23655 жыл бұрын
    • ooooooooooooooh

      @nunyabusiness3786@nunyabusiness37865 жыл бұрын
  • Below are two functions from my own code that showcases what raytracing can be in a basic way...the test is going to fire a ray from mouse and trace it to check if it collides with a triangle.Note: Raytracing for rendering involves firing not from the mouse but camera or other places - Millions of them. //// TRIANGLE INTERSECTION FUNCTION: (This is the test we want to run for every triangle in the scene) glm::vec3 PlaneN = glm::triangleNormal(v0, v1, v2); // uncertain if normal is rotated? glm::vec3 RayDirection = RayEnd - RayStart; RayDirection = glm::normalize(RayDirection); //// backface check //float loldot = glm::dot(RayDirection, PlaneN); //if (loldot > 0) {return false;} glm::vec3 PlanePointToRayStart = v0 - glm::vec3(RayStart); // PLANE EQUATION float t = glm::dot(PlanePointToRayStart, PlaneN) / glm::dot(RayDirection, PlaneN); HitReturn = glm::vec3(RayStart) + RayDirection * t; // compute triangle intersection glm::vec3 C; // edge 0 glm::vec3 edge0 = v1 - v0; glm::vec3 InterToV0 = HitReturn - v0; C = glm::cross(edge0, InterToV0); float LeftEdgeDot = glm::dot(PlaneN, C); if (LeftEdgeDot < 0) { return false; } // edge 1 glm::vec3 edge1 = v2 - v1; glm::vec3 InterToV1 = HitReturn - v1; C = glm::cross(edge1, InterToV1); float BottomEdgeDot = glm::dot(PlaneN, C); if (BottomEdgeDot < 0) { return false; } // edge 2 glm::vec3 edge2 = v0 - v2; glm::vec3 InterToV2 = HitReturn - v2; C = glm::cross(edge2, InterToV2); float DiagonalEdgeDot = glm::dot(PlaneN, C); if (DiagonalEdgeDot < 0) { return false; } ///// THE LOOP: (below is the loop, it goes through all the triangles in scene and does the above test to see if there is a collision): for (auto &T : GL.TRIANGLES) { Triangle_Intersection(T, DistanceToHit); }

    @syntaxed2@syntaxed23 жыл бұрын
    • sorry I don't speak Portuguese

      @kamalmanzukie@kamalmanzukie2 жыл бұрын
  • Tay racing?

    @veobro1456@veobro14565 жыл бұрын
    • VeoBroLIVE lil tays?

      @lookatmypooranimatedface8726@lookatmypooranimatedface87265 жыл бұрын
    • 😂😂😂😂 killer bro!

      @anubs1786@anubs17865 жыл бұрын
    • No, it's Tray Racing, which is presumably what butlers do on their free time...

      @rjfaber1991@rjfaber19915 жыл бұрын
    • Gay racing

      @veenavyas9518@veenavyas95185 жыл бұрын
    • you stupid bro meaning funny LOL

      @SimeonIsraelite@SimeonIsraelite3 жыл бұрын
  • Come on guys, it's Ray tracing. It just works

    @tonyv6815@tonyv68155 жыл бұрын
  • Thank you so much for explaining Linus

    @JukeyPlays@JukeyPlays5 жыл бұрын
  • one of the better explanations of raytracing. nice vid 💪

    @wtfsalt@wtfsalt4 жыл бұрын
  • Linus, WHERE ARE THE CAT TIPS

    @tomberberich7700@tomberberich77005 жыл бұрын
    • His cats are died

      @KangJangkrik@KangJangkrik5 жыл бұрын
    • Really? What color did he die them? Why would anyone die their cat anyway? seems weird

      @tomerbaraban66@tomerbaraban665 жыл бұрын
    • Some of elder cats, i'm forgot which one

      @KangJangkrik@KangJangkrik5 жыл бұрын
    • @@KangJangkrik Not sure if you are pretending to be able to speak English and you can't, or you're pretending you can't speak English and you can

      @tomerbaraban66@tomerbaraban665 жыл бұрын
  • Playstation 5 details officially came and they say it has a "Ray tracing".

    @boah1668@boah16685 жыл бұрын
    • At the same time some guy named ray is getting paranoid because he swears he is seeing people following him

      @toasthead@toasthead5 жыл бұрын
    • @@toasthead Shut the fuck up

      @axelkyamilov6272@axelkyamilov62724 жыл бұрын
  • Good video, love u linus, keep up the good editers LUL Keep up the good work :D

    @frederikkousgaard3453@frederikkousgaard34535 жыл бұрын
  • Thank you for this much simple and easy explanation.

    @rayansattarkhan6807@rayansattarkhan68074 жыл бұрын
  • Its the thing that your 4th grade teacher made you do with a straight edge and an arrow.

    @uss_04@uss_045 жыл бұрын
  • Minecraft is the most realistic graphics game I ever played.

    @sionmarak1916@sionmarak19165 жыл бұрын
    • Same But it's the ONLY graphics game I've played

      @mythtech@mythtech3 жыл бұрын
  • You just convinced me to become a subscriber on the very first video that I watched from here. I found his explanation of a very complicated technology very user friendly! Good stuff!!

    @Jesus.A.Torres83@Jesus.A.Torres83 Жыл бұрын
  • RT seems most useable for VR (as it already uses polygon counting for rendering the environments and objects) and rasterization for regular 3D rendering on a monitor or tv

    @kuromiLayfe@kuromiLayfe5 жыл бұрын
  • I finally figured out what the RTX 2080 stands for Real Time + Ray Tracing =RT + RT RT X 2 X 10+80 =RTX 20 + 80 RTX 2080 I have no idea what I'm doing right now.

    @sharif47@sharif475 жыл бұрын
    • @ThaKos69 it should be (( Real Time x Ray Tracing) x 1040) + ti = (RT x 2 x 1040) + ti = RT x 2080 +ti = RTX 2080ti Smh😒

      @ocalyy@ocalyy5 жыл бұрын
    • R = 18th letter T = 20th letter X = 24th letter 20+24-18 = 26 26÷2=13 Illuminati Confirmed

      @LudwigvanBeethoven2@LudwigvanBeethoven25 жыл бұрын
  • things not touched on here: path tracing, ray-object intersection methods, acceleration structures for ray-object intersection checks, multiple bounces/samples and other effects besides shadows noise issues encountered while ray tracing, nvidia's fancy pants filtering that turns noisy raytraced output into nice clean usable output. Im nerd boi and ive been thinkin about makin my own darn video about this that doesnt gloss over the fundamentals

    @Bolt6265@Bolt62655 жыл бұрын
    • I'll watch it if it's shorter than 15 minutes

      @rotnmet6257@rotnmet62575 жыл бұрын
    • Isn't that "noise" caused by the sparsity of rays used to cut the ray tracing to a more manageable task (something that a GPU can handle in a fraction of a second instead of days) rather than any consequence of Ray Tracing itself? And nvidia's fancy pants technique is to blur and approximate the missing data.

      @drawingguy2003@drawingguy20035 жыл бұрын
    • raytracing in its simplest form doesnt introduce any noise as youre only tracing as if all surfaces either dont reflect light in any direction but towards the camera or are only perfectly reflective. as you can imagine though in the real world light scatters off of surfaces in all directions (usually). so ray tracing in the simple form isnt noisy and also isnt super taxing, but that also wont give you: soft shadows, global illumination, things like caustics, etc. which nvidias stuff definitely allows for. to get things like, for this example soft shadows, in real life soft shadows are caused by the fact that there's no such thing as a point source light (infinitely small point light), all lights have volume. so in order to get soft shadows with ray tracing, when you sample shadow rays you need to sample randomly within the volume of the light source. and the keen among you may realize that once you start randomizing the direction of things whambamshapow, youve introduced noise into the picture (literally and figuratively). the same goes for things like global illumination where you need to take into account radiance of objects and smartly do multiple bounces off the initial object to simulate how light bounces around a scene and light from a green wall may reflect off and and onto other objects. theres randomness there that introduces noise as well. usually the way to deal with this kind of noise is just to render the same thing over and over and do a rolling average to converge the frames into a progressively less noisy image. but thats why this is hard to do in real time, you cant sample enough randomized paths to converge enough to the ground truth to look good in real time. at least, not without a good denoiser. and nvidias denoiser is really good, way more than just bluring/approximating. if its anything like the paper i read on a similar denoising technique, it uses machine learning combined with a rasterized render of the scene and some other wizardry to reconstruct the image. you can easily find examples of it being demonstrated with the denoiser on and off, basically can turn an unrecognizable noisy mess into a clean crisp image, with the occasional artifacting of course. hopefully this clears it up a little, so in one way yeah ya could say the noise is caused by making the task more managable, but i do think it is a fundamental issue with ray/path tracing. tho the more i think about it i guess if ya just had an insanely powerful computer that could crunch enough paths in realtime it wouldnt be an issue. its hard to word how i really feel about it but the noise is a fundamental property of light really. you get noise in the real world for similar reasons, like low photon count. things can look noisy just in your normal vision at night. and especially with cameras. just the fundamental way of basically accumulating photons looks noisy when you dont have enough photons. and same when you cant trace enough paths in ray tracing. so, eh, i guess ¯\_(ツ)_/¯

      @Bolt6265@Bolt62655 жыл бұрын
    • @@Bolt6265 this channel is called "techquickie". Of course they'll gloss over fundamentals. Make your own video. I'm serious I'll watch it. Just don't make it a half-hour long thesis.

      @shirshanyaroy287@shirshanyaroy2875 жыл бұрын
    • Bolt Man Whoa there, we've got a know it all. lol kidding around but remember this is 'Techquickie' not Tech-hour-to-explain-every-single-detail-fully, dont get me wrong I would watch a longer vid with more detail but this channel is for quickies (I think around 7 mins or less fit that bill)

      @petersonp84@petersonp845 жыл бұрын
  • This made me somewhat excited for this technology. It could be really cool. I hope in 3 years games can run well using this and I can enjoy those reflections on my Freesync IPS panel.

    @phenomanII@phenomanII5 жыл бұрын
  • Well made video. Thank you for keeping it to about 5minutes.

    @bigad23@bigad235 жыл бұрын
  • Oh, finally linus talked about RTX cards...

    @sarahmouhdach1927@sarahmouhdach19275 жыл бұрын
  • "unless you're sitting in complete darkness" how did ya know?

    @shade3524@shade35244 жыл бұрын
  • Such a great clarity on your Explanation Just educated me about Ray tracing... Thanks for the Video Linus...

    @Nithyanandan.S@Nithyanandan.S5 жыл бұрын
  • Excellent explanation/ depiction, so easy to understand!

    @ianuragaggarwal@ianuragaggarwal Жыл бұрын
  • I cracked nvidia's system guys (( Real Time x Ray Tracing) x $1040) + ti = (RT x 2 x 1040) + ti = RT x 2080 +ti = RTX 2080ti

    @ocalyy@ocalyy5 жыл бұрын
  • Yeah but I kinda need the mathematical logic behind this to program it in a framework.

    @KingOfTheBeyond23@KingOfTheBeyond235 жыл бұрын
    • One of the first papers (if not the first) about ray tracing has formulas for it: citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.156.1534 . But there might be improved formulas or already existing libraries/frameworks out there.

      @I25mI25@I25mI255 жыл бұрын
    • Take a physics class in optics

      @Cepheid_@Cepheid_5 жыл бұрын
    • kzhead.info/sun/mdaFp7aEipGQhWg/bejne.html heres a disney video explaining the physics logic behind ray tracing :D

      @dixie_rekd9601@dixie_rekd96015 жыл бұрын
    • Is ray tracing in MicroSoft Paint possible? kzhead.info/sun/qdNyqtiEkGVqoWg/bejne.html

      @Lordecai@Lordecai2 жыл бұрын
  • Thanks I was quite curious about how this works.

    @senditall152@senditall1525 жыл бұрын
  • Quick and simple like always. Can you please make a video about Nvidias new Dlss? I would really appreciate it. So many different information are going trough the web at the moment.

    @maxl.4445@maxl.44455 жыл бұрын
  • I'm tracing a picture of my friend Ray right now. I'm "Ray Tracing".

    @JimGriffOne@JimGriffOne5 жыл бұрын
  • Love how every one memes/pokes fun at ray tracing, when it made many movies possible with realistic CGI (depending on who does it) and used in Pixar movies, Nvidia didn't invent ray tracing, it take time for this to get better. CGI and computer graphics wouldn't look so realistic without ray tracing.

    @ravenman13@ravenman135 жыл бұрын
    • Nvidia didnt invented ray tracing, but they make it real time instead.

      @izvarzone@izvarzone5 жыл бұрын
    • All hail CUDA.

      @def_not_dan@def_not_dan5 жыл бұрын
    • But I think part of the criticism is that the video card market is suffocating, and the demand for affordable, significant upgrades has been met with immature technology that's costly in every way and might not be important until their next upgrade.

      @michaelscott-joynt3215@michaelscott-joynt32155 жыл бұрын
    • The memes aren't making fun of the general technique of ray-tracing. They're making fun of RTX.

      @shirshanyaroy287@shirshanyaroy2875 жыл бұрын
    • There is more to rendering games than just throwing more cores at the problem. Its only logical someone HAD to move the technology forward, just as programmable shaders replaced fixed-function shaders, raytracing will slowly replace programmable shaders. Clinging on to a limited technology is never a good thing, even if it upsets people in the short term due to the cost it will improve game visuals and make developeing those games a bit easier in the long term.

      @alexatkin@alexatkin5 жыл бұрын
  • I have a question...If i use a Dvi-d (dual link) to displayport adapter and use the rtx gpu, does ray tracing performance get affected...

    @Gamer-cj3ug@Gamer-cj3ug3 жыл бұрын
  • Thank you. I hear it all the time but didn't really get it. This was super simple. 👌

    @PandasticVoyage@PandasticVoyage2 жыл бұрын
  • But to understand ray-tracing, me must fist talk about alternate universes

    @__archive50472@__archive504724 жыл бұрын
  • I would like to see a ray traced lightning in real life, with nvidia series.

    @yeetdaz4784@yeetdaz47843 жыл бұрын
  • thanks for the video. Something I was very curious about!

    @Japanimepop@Japanimepop5 жыл бұрын
  • If anyone wants to help me out here I decided to choose this consumer grade ray tracing for a project in my computer science class! However I'm having a hard time clearly identifying what data the process takes in as an input. Would it be the data of the objects location and its behavior with light or would it be the actual path the virtual camera traces or a combination of both?

    @alanh.6720@alanh.67204 жыл бұрын
  • Wtf is am incidentally sitting in a dark room.

    @bhuvanchandra2848@bhuvanchandra28485 жыл бұрын
    • Bhuvan Chandra And me

      @circuit10@circuit105 жыл бұрын
    • Engrrrish.

      @danm2368@danm23685 жыл бұрын
    • Is your screen on? Because that is a source of light.

      @DonatasCer@DonatasCer5 жыл бұрын
    • im sitting in a room with light. but that light comes from behind my slightly open door, not giving me a visible light source to use

      @pr9101@pr91015 жыл бұрын
    • @@pr9101 That just means you have to switch to path tracing.

      @jamesmnguyen@jamesmnguyen5 жыл бұрын
  • I'd like for Linus to be my sugar daddy in a way. He pays me in pc parts he isn't using and I fallow him around calling him various names like cool guy or Tom and then fetch his mail using my heelys so I can fetch it very fast. Think man servant but with early 2000's foot ware and modern PC parts I' be the bing of interns. Kinda crappy and not as good as the other options but you can't seem to get it to go away so you just give up all hope and keep it

    @chonkyloreraccoon3686@chonkyloreraccoon36865 жыл бұрын
    • what the fuck

      @XenoContact@XenoContact5 жыл бұрын
    • Slav

      @Navisheik@Navisheik5 жыл бұрын
    • I love the picture you've just painted in my head. It makes my heart warm.

      @BothHands1@BothHands15 жыл бұрын
    • I relate to this on a spiritual level

      @bugglest0n@bugglest0n5 жыл бұрын
    • the bing of interns! Lol

      @christiankneupper7011@christiankneupper70115 жыл бұрын
  • Thanks for a concise yet detailed explanation.

    @orderd29@orderd29 Жыл бұрын
  • Pulseway is the only ad I see when I see any video of techquickie...... But ngl I love it.

    @hope_less@hope_less3 жыл бұрын
  • something that costs u 1.2k

    @John-lt5rl@John-lt5rl5 жыл бұрын
    • Because you HAVE to buy the top-end model, right?

      @alexatkin@alexatkin5 жыл бұрын
    • Ey

      @bruhboi4692@bruhboi46923 жыл бұрын
  • 2:14 Well. You can get some pretty amazing raytraced graphics with a regular gaming PC, too, even without that much money. (or probably even a regular non gaming pc.) The bigger problem is just the time I would say. It is a big difference when you give your rendering software minutes or even hours to only render a single frame of an animation, instead of requiring your computer to render multiple images per second like in a computer game. I am pretty sure most people have computers capable of rendering this image at 2:30. Just not at all in real time. On the other hand if you have a lot of money you can save a lot of time. You just buy many computers and each computer can render a different frame of your animation simultaneously.

    @philmsproduction@philmsproduction5 жыл бұрын
    • 'minutes or even hours' lol... I would be glad for that! Depending on the scene, minutes for a complete and somewhat noise free frame is pretty damn amazing.

      @benjaminmuller9348@benjaminmuller93484 жыл бұрын
  • right for about 2:05 in the video and i fully understand that ray tracing is kinda shading and lightning on the scene which you will be seeing in the game while playing so just looking at the scene for example scene where two person talking in the room will be effecting them by lightning in the room and then shading on their faces like making it even more realistic at the same time while watching those two people talking to each other

    @becreative7072@becreative70723 жыл бұрын
  • The first of the tech in games was called high dynamic range or HDR. It is light that changes color when reflecting with say a wall: Yellow light onto a red wall creates an orange orb. Raytracing it the same principle but with images: Ever see a shadow in an alley way of a cat. Now that cats shadow is controlled by the cats low light vision, hunting for food (ominous as to scare off bigger predators). Cypress hill said it best, I'd watch you back but it's best to watch your front. Another example of reflected image is our eyes are round and the World oval, it's why in low light we see images reflecting off shadow from straight shots. Humans lost night vision in place of color, to spot poisonous fruits and berries. But our nocturnal vision never really went aways. A child in the whom has blue eyes and then get's pigment from it's parents surroundings. Blue round eyes take the low light into the iris. As raytracing happens in everyday life. Now if the World was round not oval, you would not get it, the reflective World would not exist: The saying when you stare into the abyss sometimes something looks back means one thing, you may see your self.

    @davidlavers5928@davidlavers59282 жыл бұрын
  • Ray tracing will be the future of lighting in games, real time always follows production as hardware allows (PBR being one of the most recent huge jumps in quality brought in from production rendering) but I don't think it is anything more than enthusiast right now. Just imagine not needing to adjust shadow map quality, or enable some shadow softening options, or even decide which AO you want because those are all tricks and techniques to try and simulate those things ray tracing just does. It doesn't even necessarily help production, as we've had real time previewers in things like octane and even the free blender for years, so personally I'm going to hold off a few generations. Very exciting advancement though, and great explanation.

    @foist101@foist1015 жыл бұрын
    • give it a few years..

      @yulfine1688@yulfine16885 жыл бұрын
    • I really hope so!

      @monowavy@monowavy5 жыл бұрын
    • In few years, people wont even remember they complained about ray tracing.

      @izvarzone@izvarzone5 жыл бұрын
    • Its not what you wanted but it IS what you need.

      @alexatkin@alexatkin5 жыл бұрын
    • it does help production IMO, at least for individuals. I mean, with RTX integration into many raytracing render engines, you see quite a decent speedup, which is great, especially for previewing a scene (for finals, you might have a renderfarm anyway).

      @benjaminmuller9348@benjaminmuller93484 жыл бұрын
  • 3:08 "consumer grade ray tracing". Production renderers do the same thing (trace from the camera into the scene), it'd make no sense to just trace a shit load of rays that aren't going to randomly actually hit the camera lens. So that isn't how ray tracing for games differs. It differs from production rendering in that it only renders a few rays per pixel, and then the AI tensor cores use a deep neural network to denoise the result. Rasterizing is still the main rendering tech, and takes care of anti aliasing. In a production renderer, thousands of camera rays may be shot out per pixel for good anti aliasing, and they may be distributed across time (for motion blur) or space (across the area of a lens for bokeh effects). From each camera ray, thousands of shading rays may be cast too (reflections, refractions, both of which could be rough, requiring way more rays than glossy), and then finally directed towards a light. All the different types of shading rays, multiplied by thousands of camera rays exponentially increases the number of rays cast. So its really the same thing, just far fewer rays.

    @PeterJansen@PeterJansen5 жыл бұрын
    • Was thinking this exact thing when I got to that part of the video, legit had to pause and have a "hang on, what did he say?" moment. Also, fun fact, Turing also accelerates the actual process of tracing individual rays, as the RT cores accelerate structure traversal and intersection tests. That, combined with the AI denoiser cleaning up the image, is what allows Turing to do "real time" raytracing.

      @jcm2606@jcm26065 жыл бұрын
    • Description of rasterization was all kinds of funky as well.. Most nvidia demos used standard bilateral filtering and so on, will be very interesting to see what techniques we will see in future.

      @pottuvoi2@pottuvoi25 жыл бұрын
  • Never knew that 3:22 also explains how Atom Heart Father works

    @shirayukinobunaga9424@shirayukinobunaga94243 жыл бұрын
  • Already past my study on it to help me back then, but the explaination is nice :)

    @justjuniorjaw@justjuniorjaw5 жыл бұрын
  • No idea why I watched this when I know more about ray tracing than Linus knows about how to hold his PC hardware firmly in his hands. Anyways, almost every game developer has dreamed of being able to use ray tracing in their games some day. I'd say that there is 0 chance that developers won't develop games with ray tracing support. It's more likely that they'll try to do anything to help the ray tracing technology be available to as many people as possible so that they had a chance to rely entirely on it. Ray tracing can save so much work for developers, you can't even imagine.

    @AdriansNetlis@AdriansNetlis5 жыл бұрын
    • not only that but its actually less work to develop for a ray tracing API and for the most part rasterized work will only be improved by ray tracing techniques with zero input from the developer (unless they want to aim for photorealism ofc), I can see engines like unreal and unity working in both raytracing and rasterization really soon.

      @dixie_rekd9601@dixie_rekd96015 жыл бұрын
  • 2:59 >Linus : one frame per day >Image says 29 hours There is 29 hours in a day.

    @nopparuj@nopparuj5 жыл бұрын
  • Yes!, I've been waiting for this.

    @TakumiWadate@TakumiWadate5 жыл бұрын
  • So basically, it renderes the enviroment in 3d simulation, then simulates where light would travel from said lightsources. And wether your in the those lines detirmines the shades that are rendered.

    @francisbalfour1243@francisbalfour1243 Жыл бұрын
  • BUT I AM SITTING IN COMPLETE DARKNESS ITS A LIFESTYLE CHOICE!

    @picklerick98@picklerick985 жыл бұрын
    • I call BS, how would you watch the video? :p

      @alexatkin@alexatkin5 жыл бұрын
    • I am sitting here in bright sunlight "puts on shades"

      @acatisfinetoo3018@acatisfinetoo30184 жыл бұрын
    • You're the funniest thing I've ever seen

      @bruhboi4692@bruhboi46923 жыл бұрын
  • We've been using ray tracing in Blender for years, yet for games it's difficult. Within the next few years we will see games use ray tracing

    @Smash_ter@Smash_ter5 жыл бұрын
  • The original ray tracing algorithm was created by Appel back in the 60s. It just tells you if there is an obstacle between two points, which can then be used to compute shaows. The method explained in this video is actually called recursive ray tracing or Whitted ray tracing, which enables the computation of reflections and refractions. Photo realism can't be achieved with ray tracing alone. For that, you need more advanced methods such as path tracing, photon mapping, subsurface scattering, etc.

    @Sheisonlyevil@Sheisonlyevil5 жыл бұрын
  • Yes thank you for making this!

    @Hellboy_2109@Hellboy_21095 жыл бұрын
  • It feels like when we went from 2d graphics, to 3d graphics, to 3d photo-realistic graphics and people said that it "probably wasn't worth the power required since it was going to perform so poorly" To anyone *not* excited about it. Just remember things iterate. And this is one of those things normal people dont consciously notice or think about

    @frosty9392@frosty93925 жыл бұрын
  • "Ray tracing has made headlines lately as the rendering method of the future for games" Didn't we use ray tracing for a really long time, we just baked lights onto texture in order to save CPU power.

    @IAMDIMITRI@IAMDIMITRI5 жыл бұрын
    • No, we didn't use ray tracing before this in 3D games, before baked lights we just didn't have lighting

      @alexbaker1569@alexbaker15692 жыл бұрын
    • @@alexbaker1569 im just saying that we had baked lights for a long time.

      @IAMDIMITRI@IAMDIMITRI2 жыл бұрын
    • @@IAMDIMITRI true, but that's not what you were saying, you said we have used ray tracing in games before, which is false

      @alexbaker1569@alexbaker15692 жыл бұрын
    • @@alexbaker1569 That's what you do in for example counter strike 1.6 when you create maps. Light gets ray traced and baked onto textures. I'm certain that the whole quake engine uses this method.

      @IAMDIMITRI@IAMDIMITRI2 жыл бұрын
    • @@IAMDIMITRI yes, we used ray tracing to create maps, but once the maps were created it was baked in, we have never before used real time ray tracing, the kind that is now starting to used in games

      @alexbaker1569@alexbaker15692 жыл бұрын
  • this vedio is a better introduction to ray tracing that my lecture I had in computer grafics at university, now that Im a computer scince student I see how much those vedios are helpfull

    @omart9411@omart94114 жыл бұрын
  • Wow in 3 years the graphics of videogames have evolved so much its amazing

    @pusitai_pusiclin8059@pusitai_pusiclin8059 Жыл бұрын
  • Ray Traced games currently don't look much better. HOWEVER we must use Ray Tracing to make our games look like real life.

    @tomislavcelic8806@tomislavcelic88065 жыл бұрын
    • No, they do look a lot better currently.

      @reck6328@reck63285 жыл бұрын
    • Image realism is better, but frame rate is trash atm. I don't think it's quite ready for market yet, at least not for games. Though it can definitely change the way amateur animation is done - in applications where people have time to wait for a render, the technology is amazing. But I won't be buying this iteration for gaming, and I don't work in animation, so I won't be buying it at all. But I'm definitely excited to see where this will be in 5 years, assuming it catches on in gaming. But with 40fps on a 1200$ card right now, I doubt anyone's even going to code games for ray tracing yet, at least not without huge financial incentives from nVidia.

      @BothHands1@BothHands15 жыл бұрын
    • Reckfullies eh, I watched the BF5 demos of ray tracing, and there wasn’t a huge difference. It looked like there really wasn’t a difference anywhere but in puddles. Yeah the puddles were amazing but I know I wouldn’t notice them during gameplay, just like massive overhauls in puddle reflections before. Sure it’s the future, but right now it’s definitely not worth the price premium for the handful of games with a little bit of extra reflections.

      @Gasmask11000@Gasmask110005 жыл бұрын
    • swd3311000 That is only BFV, a poor example because they only used raytracing for reflections. The biggest difference with RT is lighting, which they didn't even use. Sure I don't think there are any games that have that enabled right now, but it is definitely possible assuming a developer wanted to do it. And it would look amazing.

      @reck6328@reck63285 жыл бұрын
    • Reckfullies you said they look better currently, and then you said they don’t exist. That’s one of my main reasons not to buy this card: there’s only one game that supports this feature. So ray tracing games don’t really look better currently because they don’t exist. BFV is the only one that exists and it only uses it for reflections. I’m not going to buy a graphics card when the main selling point isn’t used by any games.

      @Gasmask11000@Gasmask110005 жыл бұрын
  • I really hope this feature will become the new norm, it'll be a giant leap in graphics. And yes a huge cost in performance, but as people have said this is just the first generation, you gotta start somewhere.

    @MarkSKristensen@MarkSKristensen5 жыл бұрын
    • "become" is the word. There is nothing for the normal gamer to use it for.

      @allanlansdowne340@allanlansdowne3405 жыл бұрын
    • indeed even with better drivers and software to work with i dont think youll be seeing much in the well mainly tripple A games that have ray tracing built in and youll be lucky to see a 60fps at 1080p with a 2080ti or 2080. It requires a lot of power to render per second and the fact they nvidia and amd have been able to do so in real time at 30-60 frames per second that is god damn impressive.

      @yulfine1688@yulfine16885 жыл бұрын
    • See as how a lot of PC Master Races are allergic to sub 120 fps images, probably won't see much sheeple celebration for it in a while as well.

      @ShirokiMaki@ShirokiMaki5 жыл бұрын
    • It's exciting tech but give it time. Not currently practical if you prioritise fps over visuals (like competitive gamers)

      @chipmo@chipmo5 жыл бұрын
    • Why is nobody considering that using RTX actually reduces the load on the shaders? If developers allow people to choose the RTX complexity in the scene you could easily have a gorgeous 60fps game while still allowing much higher frame rates at the cost of it not looking as good, but likely STILL better than shaders alone.

      @alexatkin@alexatkin5 жыл бұрын
  • Good Explanation Thanks for sharing

    @saemranian@saemranian8 ай бұрын
  • I watched different videos and different channels but somehow are all him. This guy is everywhere.

    @naughtyisami154@naughtyisami1544 жыл бұрын
  • Anyone here because next gen consoles have ray tracing?

    @ironingot8988@ironingot89883 жыл бұрын
    • 2 years behind

      @esmith2k2@esmith2k23 жыл бұрын
  • Hi. This has been in 3D software like Maya 20 years ago or so but using software, using the CPU (slow, not in real time- unless it's a renderfarm, like mentioned). God bless, Proverbs 31

    @SevenDeMagnus@SevenDeMagnus5 жыл бұрын
    • a renderfarm is usually used for animation rendering tho, to keep rendertimes below centuries, so I wouldn't really call it 'real time'. But I mean, real time is pretty vague. If you have a good PC, you can often preview your scene somewhat interactively (if it doesn't contain really computationally expensive things like detailed volumes etc).

      @benjaminmuller9348@benjaminmuller93484 жыл бұрын
  • Very nice to see a well made , informative, on point and no bullshit videos. No wonder u guys rule in this space. Thanks for the content guys. Seriously.

    @grudzien9784@grudzien97844 жыл бұрын
  • One of the best yet

    @nicfit23@nicfit235 жыл бұрын
  • ps5 anyone?

    @frostya1029@frostya10295 жыл бұрын
    • Yep

      @northtexasskies3243@northtexasskies32435 жыл бұрын
    • No

      @mohammedawad1216@mohammedawad12165 жыл бұрын
    • Yee

      @lowkey_out@lowkey_out5 жыл бұрын
    • Noo

      @tchitchouan@tchitchouan5 жыл бұрын
    • Noshit

      @jessejustice454@jessejustice4545 жыл бұрын
  • PhysX 2.0

    @deemonk7860@deemonk78605 жыл бұрын
    • How could it be PhysX 2.0? The Ray-tracing technology has nothing to do with physics at all.

      @TheFoxyGamerOfficial@TheFoxyGamerOfficial5 жыл бұрын
    • @@TheFoxyGamerOfficial I was sarcastic...look this is my personal opinion,but picture it like this.Giant corporate chess game and Nvidia just made their move.Just like they did with SLI,PhysX,GameWorks,GPP...and now Ray Tracing.The question is does the other side have a counter move or is it game over?I compared it to PhysX because thats another technology customers didnt really want at the time it was introduced.Bottom line...its business thats what it is..

      @deemonk7860@deemonk78605 жыл бұрын
    • What you mean by a counter move? Ray tracing is here since 4/5 years, just almost nobody is using it, that's why for gamers there's no point in using windows 10 because ray tracing is only used in directx 12.

      @HeavenlyWarrior@HeavenlyWarrior5 жыл бұрын
  • All i know is Bob marly got the rasterization locked

    @VultureUKmusic@VultureUKmusic5 ай бұрын
  • Good explanation, thank-you

    @didrickkazowski2340@didrickkazowski23404 ай бұрын
  • 0:49 wait a second, you used that same clip of Minecraft from "Intel's coolest CPU... Thanks to AMD!" video! Do you guys even play Minecraft?!

    @josephcano8074@josephcano80745 жыл бұрын
    • Yeah, they spend their every waking moment playing games so that they can put different clips on their videos for your personal enjoyment. No, they have more important things to do than play games during work (at least most of the time).

      @Mismatch-@Mismatch-5 жыл бұрын
    • @@Mismatch- lol, I was joking.

      @josephcano8074@josephcano80745 жыл бұрын
  • "You do it 30 or 60 times a second, depending, who you ask..." I'm dead xDDDD RIP Consoles

    @laci507@laci5075 жыл бұрын
    • laci507 yeah I know right? RIP Any PC under $1,000

      @TheGr0nch@TheGr0nch4 жыл бұрын
    • The GrOnch Not like 800$ pcs will last you multiple years, can run every triple A game in high settings, and have millions of games for all tastes...nope

      @sebawuba8533@sebawuba85334 жыл бұрын
  • I might be remembering wrong, but raytracing was a thing back in the initial Unreal Editor for Unreal Tournament where I made a few maps. I'm guessing they just picked up the old tech and optimized it. Eh, dunno, at least I'm sure the term "raytracing" is something that I encountered decades ago.

    @Leongon@Leongon5 жыл бұрын
  • Really nice explanation

    @David-zf5tv@David-zf5tv3 жыл бұрын
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