WEBVTT

00:00:00.160 --> 00:00:06.080
typically when we get excited about improvements to gaming performance it's

00:00:04.000 --> 00:00:10.160
because of some new piece of hardware like a high refresh rate monitor or a

00:00:08.080 --> 00:00:14.000
graphics card that's beefier than a porterhouse stake

00:00:12.000 --> 00:00:18.160
but microsoft has come out with a new piece of software that looks like it

00:00:16.160 --> 00:00:23.119
should give your visuals a significant boost in terms of both quality and

00:00:20.240 --> 00:00:28.240
performance it's called directx 12 ultimate and despite the tacky gamer

00:00:26.320 --> 00:00:32.719
sounding name it features technical optimizations that should really make a

00:00:30.240 --> 00:00:36.000
difference the first big change is about ray tracing

00:00:34.160 --> 00:00:40.800
you can learn more about ray tracing in general in this video but in a nutshell

00:00:38.559 --> 00:00:45.280
it's a technique in which your GPU can track where light rays are going in a

00:00:43.200 --> 00:00:49.039
scene to give a much more realistic light and shadow effects than you'd

00:00:46.640 --> 00:00:52.800
otherwise get reflections look amazing ray tracing support first became

00:00:51.120 --> 00:00:58.239
widespread on consumer graphics cards with NVIDIA's release of their high-end

00:00:54.800 --> 00:01:00.320
rtx 2000 series but directx 12 ultimate

00:00:58.239 --> 00:01:05.280
will not only support ray tracing on both NVIDIA and AMD cards but it should

00:01:03.199 --> 00:01:08.960
lighten the load on your system to make the technology more accessible to all

00:01:07.520 --> 00:01:12.320
now developers are going to have more control over the process instead of just

00:01:10.880 --> 00:01:17.280
letting the system decide how to schedule ray tracing through a process

00:01:14.560 --> 00:01:21.040
called inline ray tracing essentially this makes the processing of simpler

00:01:19.200 --> 00:01:25.439
lighting effects more efficient since the developer is telling the GPU exactly

00:01:23.360 --> 00:01:29.360
when to trace a certain effect instead of forcing the GPU to spend processing

00:01:27.360 --> 00:01:34.079
resources trying to decide on its own the dx12 ultimate API also eases the

00:01:31.840 --> 00:01:38.880
load on your CPU as originally the shaders on your GPU had to talk to the

00:01:36.240 --> 00:01:44.079
CPU to start ray tracing a scene now your GPU can just do this on its own

00:01:41.439 --> 00:01:48.799
allowing for faster processing overall hopefully leading to ray tracing support

00:01:46.399 --> 00:01:53.840
in more games with lower hardware requirements for an eye pleasing

00:01:50.960 --> 00:01:57.600
experience moving on mesh shading should also prevent your GPU from rendering

00:01:55.680 --> 00:02:01.520
parts of the scene that you'll never even see suppose you're playing a

00:01:59.360 --> 00:02:06.000
high-end aaa title with thousands of detailed objects in each scene that's a

00:02:04.000 --> 00:02:11.200
lot for your GPU to handle as it might have to draw trillions of little

00:02:08.000 --> 00:02:13.200
triangles every frame in extreme cases

00:02:11.200 --> 00:02:17.440
but your eye can only detect so much detail right imagine you're looking at a

00:02:15.360 --> 00:02:21.120
faraway mountain for example you're not going to be able to make out every

00:02:18.720 --> 00:02:25.680
little crag and rock formation and mesh shading takes this idea and applies it

00:02:23.200 --> 00:02:30.400
to computer graphics specialized shaders first figure out which objects even need

00:02:27.920 --> 00:02:35.200
to be rendered at all then every object that makes the cut is assigned a certain

00:02:32.800 --> 00:02:39.920
level of detail close by objects are rendered at high detail levels with more

00:02:37.680 --> 00:02:44.800
triangles with objects that are farther away getting lower levels of detail and

00:02:42.160 --> 00:02:49.040
fewer triangles often several orders of magnitude fewer depending on how far

00:02:47.040 --> 00:02:54.000
away it is with the level of detail getting adjusted dynamically as objects

00:02:51.360 --> 00:02:57.519
move closer or farther away although assigning objects different levels of

00:02:55.840 --> 00:03:02.879
detail is a technique that's been around for a while mesh shading allows your GPU

00:03:00.400 --> 00:03:07.760
to process triangles in chunks instead of individually allowing level of detail

00:03:05.519 --> 00:03:11.920
computations to happen far more quickly next up let's talk about sampler

00:03:09.760 --> 00:03:16.480
feedback this is a method that allows more static parts of an image

00:03:14.560 --> 00:03:20.560
to be shaded from scratch less frequently meaning that your GPU will

00:03:18.480 --> 00:03:24.800
take shading data from previous frames and apply it to subsequent frames

00:03:22.480 --> 00:03:29.040
without having to reprocess everything what a ways to work so instead of having

00:03:26.959 --> 00:03:34.000
to do tons of work on every object every frame an object might only be reshaded

00:03:31.440 --> 00:03:38.319
every second third or even tenth frame depending on the environment a related

00:03:36.000 --> 00:03:42.400
feature called variable rate shading only applies detailed shading to parts

00:03:40.640 --> 00:03:46.480
of the screen that you're actively looking at with your eyes as your eyes

00:03:44.560 --> 00:03:49.200
peripheral vision starts to blur quickly from the center of your field of view

00:03:47.840 --> 00:03:52.000
and you can learn much more about variable rate shading in our dedicated

00:03:51.040 --> 00:03:56.480
video right up here so all this means that

00:03:54.480 --> 00:04:01.040
directx 12 ultimate is primarily concerned with stopping your GPU from

00:03:58.640 --> 00:04:04.239
wasting energy rendering crap that you simply won't see freeing up

00:04:02.319 --> 00:04:08.799
computational power that could be used to create more realistic game worlds and

00:04:06.959 --> 00:04:13.519
not only will we see it on pc but it'll be supported on the xbox series x too so

00:04:11.200 --> 00:04:17.759
hopefully we'll see developers leverage it in lots of upcoming titles after all

00:04:15.920 --> 00:04:22.720
why would you want to make your GPU do unnecessary work like some kind of power

00:04:19.919 --> 00:04:25.440
hungry boss i know how that is

00:04:24.320 --> 00:04:30.800
this video is brought to you by storyblocks if you've ever been in the need for a quick video clip for b-roll

00:04:28.880 --> 00:04:34.560
after effects templates or motion backgrounds check out story blocks we've

00:04:33.120 --> 00:04:37.759
used them here on techwiki and it's really simplified our workflow clips are

00:04:36.400 --> 00:04:41.120
easy to find you can download as many as you want at a low cost so you can just

00:04:39.440 --> 00:04:44.320
test them in your project whether it's a youtube video or a video background for

00:04:42.960 --> 00:04:47.840
your website instead of letting your creative needs take a back seat due to

00:04:46.160 --> 00:04:51.600
budget constraints or scrambling because a client made last minute changes use

00:04:49.919 --> 00:04:54.560
storyblocks affordable high quality footage instead of finding someone to go

00:04:53.199 --> 00:04:57.520
shoot it for you you can check out storyblocks today in the link below so

00:04:56.639 --> 00:05:02.160
thanks for watching guys if you like this video give us a thumbs up hit subscribe and be sure to leave a message

00:05:00.639 --> 00:05:07.639
in the comment section with your suggestion for topics that we should

00:05:04.240 --> 00:05:07.639
cover in the future