Video

That is insanely smooth, wow. Would love to hear a technical explanation on how this works

Hey sphynx just want to say how much your motion blur is carrying my game Do wonder though, I keep getting errors and it breaks whenever I try to change scenes is that normal?

this is incredible you are so talented

Where can I get this environment?

I had to come here again because I thought of something that might fix general rotational blur. My original thought was: "What if we knew the rotation axis of any object, then we could correctly sample in a circle without the sampling deviation", which I realize you already covered in this video. I did extend this thought though to how this could be pulled off for any general frame. My general idea would be to have a second full frame buffer similar to a normal buffer, but with every pixels r, g and b value indicating the worldspace rotation axis of rotation. Though thinking about that, that would require two buffers, one for the rotation vector and one with a vector pointing towards the rotation axis. Maybe it could be compressed into one rbga buffer by using a quaternion, though I am not familiar enough with them to decide if this was possible. So this approach may need two extra buffers. Of course the second issue is how to find the rotation axis to populate the buffer with. My first thought was using the position of our point on the last frame and this frame to compute the rotation axis, but that would be a screenspace rotation axis, so kinda useless. However, the CPU doesn't send mesh data to the gpu again every frame for an object that rotated. instead it sends a quaternion to encode the rotation and the vertex shader does the actual rotating. So if we write a custom vertex shader that captures this information, possibly also this information for the previous frame, and put it into a struct that we pass on to the fragment shader, we could create the rotation axis and rotation axis offset buffers by doing a bit of extra computation. This for sure is the most expensive option out of all methods provided, but it would have the benefit of being generally applicable without artist-authored blur meshes. What do you think of this? might this work?

very good!

Now that Compositor effects are a thing in 4.3, how is this going to affect how you will make your motion blur?

Moral to the story: drop out of school, kids!

Ive tried the plugin with terrain3d and it causing some flickering in and out - wondering if its just me, but has anyone tried the plugin in terrain3d?

Looks yucky as always

Motion Blur will always suck because artifically re-creating an eye-based issue while the eye is not having issues at all is always distracting. You can't fix that.

cool. so do you think this could be usable in 2D games, too? and if so, would you recommend it?

Cool, But could you upload a link to the uncompressed video footage, because The resolution is so low and the low bit-rate rushed the image.

The best implementation of motion blur in games is to never use it at all except in cutscenes. Monitors have enough motion blur by themselves. Maybe you like the effect, but here's the thing, nobody wants blur in counterstrike that hides the opponent. Nobody who buys a 4090 wants some developer to SMEAR VASELINE all over the screen so they can't see the details of raytracing. We're NOT watching a movie, we're playing games.

I deeply appreciate your work. Motion blur that matches real life is my dream. BECAUSE, to me any frame rate above 30fps looks fake. There is a reason why 24fps is used for movies and that is because when they shifted to 60fps for TV, everyone thought it looked fake. Why? Motion blur. 24fps films are the most natural looking motion blurs and for this reason, we desperately need to emulate the motion blur that occurs in 24fps film. The end goal is reality and the pathway there is realistic motion blur.

nice work

nice work

when will it release

Do you reckon it's possible to use it to make your own pre-rendered animated sprites from that? so you get the best of both worlds, where it uses that in an empty world/green screen, and creates the animated sprite from it in real time then what you see is the pre-rendered sprite animation, which won't have the deformation the shader has when rendered over things.

I dont know why, but i feel like Crysis 1 (the original PC version) had one of the best implementation of motion blur czcams.com/video/KVmc2P2PPRw/video.html It's suddle, the silhouette is almonst unnoticable. I really loved t..later, industry started to implement some cheaper version of it.

And then after 9000 developer-hours invested 99% of gamers turn it off.

Amazing video, glad it appears on my feeds ! But now I want to test it on my end and see what's going on. I've seen the demo is under CC4 but I've also seen it was for proprietary use for Godot Engine in the paper. So I'm a bit confused about what I should do if I want to implement it in a personal project of mine (let's say a Game Engine for example) Aside from this, again, incredible work and research. Really mind opening

do i understand correctly? blur is not perceivable by human eyes by default, it's only a bug in our hardware (cameras), and we for some reason want to port it also to games?

Nerd

If its possible it would be nice if motion blur can be detached from the scene. As in, motion blur applies to everything except: enemies if there are enemies, anything beyond ~5 or 10 meters away from the camera, see through patterns/transparent materials like dirty windows and chain fences and camera movement that isn't forward (whip pans don't have motion blur but moving forward does) Project CARS 3 applies motion blur to everything close to the camera except the car body. Interestingly enough, doing a whip pan in third person and going into photo mode mid pan lets you explore the world with motion blur which is really cool and you can adjust the "shutter speed" motion blur amount while viewing the 3D motion blur.

Congrats!

Yay! Good real-time motion blur to go with! I personally don't understand people who turn off MB always. in all games. I can only relate if the implementation is awful. UE's implementation of MB is also somewhat interesting point of discussion, because i think in the majority of projects that utilise it, it instantly gives itself away that it's UE game with it's "UE look". It is somehow flawed i guess. Because if it would've been done right it wouldn't be obvious immediately and always. Thanks for sharing the method that you've researched and developed! I personally have been "researching"(impostor syndrome isn't taking it easy on me lol) emulation of halation effect that is present on photographic film, when a bright area is contrasted against a dark area, there's some subtle reddish-orange light that is spilling over to dark area from bright spot(it's very different to bloom). Imo it's quite PBR, it takes in Linear Rec709 framebuffer, so it has a realistic representation of what's bright and what's not. There's basically no info on how to emulate it, aside from tutorials for davinci-premiere-photoshop which are 1.for 8bit sRGB videos or images 2.completely non energy conserved 3.Most of them are just thriving for the "similar look" with no physical ground beneath it. Or there's also some proprietary solutions like davinci built-in halation, or dehancer plugin, they still work afaik only with sRGB. And also paid. Grasping inspiration from movies and images shot on film took this project far. I was really hooked when you mentioned about center or end motion blur, because 2 years ago i was playing around with blender cycles motion blur and was wondering, what would be the most accurate in respect to real cameras motion blur. I felt like default "center on frame" option might be not it, and default shutter curve might also be a bit inaccurate to what's happening in real camera. I stayed at default center on frame option(which after watching that vid seems to be incorrect), with shutter curve changed to triangle, with no actual testing being done, just "what felt right". What are your opinion on what would be the right settings? Thanks!

this is so cool

Cool stuff. Please Create paid asset for Unity asset store and URP :) I will buy it :)

Looks fun.

Love to see the progress on this. Keep up the good work 👍🏽

amazing! congrats!

By how it looks it's comparable with KinoMotion

Awesome stuff bro!!

Motion blur is awful and should not exist in video games.

Cool but I’m still instantly turing that off in every game

oh, i had an idea, would this work with techniques like Asynchronous Reprojection/Timewarp AKA rendering screen space rotations between world space frames? theres an Async Repro demo that Linus Tech Tips did a showcase of, with an improved world space transformation approximation that has interesting behaviour, but even without that, accurately blurring world space as you move through it while being able to turn the camera at higher framerates would make it a lot more comfortable, if the motion blurring can be done efficiently enough

your explanation was good 👍. when the motion blur addon is coming ?

The real question: Rigidbody or Characterbody?

I work with video animation and it baffles me that in after effects there isn't a plug-in that utilizes motion vectors in conjunction with a depth pass, so even the best current plugin gives wildly incorrect motion blur when there is object overlap. Would you be interested in trying to write a plugin for after effects that does exactly what you did? I bet it would be very popular!

Smooth.

Looks like there’s some artifacting around the edges of the screen especially at the bottom, is that caused by there not being enough information to fully calculate the blur?

trackmania vibes ;D

Loved to watch the video. These are some great experiments! I have never done motion blur in a shader, but only used velocity vectors in fluids. I wonder if it would work if you buffer 2 past frames and interpolate non-linearily between 3 frames, perhaps you couls get a curve this way?

Seeing the greattl things you have achieved has renewed my inspiration. I too was a hughschool dropout, now trying my hardest to use godot ro the best of my abilities.

Didn't watch the full video but Impressive

Incredible! As an intermediate developer, I never thought about how to consistently make propellers/wheels blur

lovely stuff

very cool. Still turning it off.

Why would you try to simulate camera shutter in the first place? Simulate human sight instead.