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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.

To solve the lighting issue, would it be possible to separately perform the blur step on the normals buffer before lighting is computed, and also rotating the sampled normals? I don't know the Godot pipeline at all so I'm just thinking out loud.

A zoomed in slow motion side by side with like 30, 60, 90 and 120fps would be great to judge of the quality of the effect with the same settings as well as the optimized number of passes for each. An other thing to look at is how it handles inconsistent framerate and frametime spikes, does it feel jarring then ? Does it play well with animation that are at a much lower frequency as the framerate, maybe the added smoothness of the frames with movement makes the frame in between. How does it handle jittery objects (like Bethesda physics) ? Having some control over the strength and distribution blur could be very interesting. Instead of only being a blur it could be used to create more of a smear effect, dilating the object more than distributing its light. If it looks good it could add a lot of artistic potential to Godot games that can't compete in the photorealism with other game engines.

holy shit.

4:55 the car front hood is ghosting in front of it. That might be a problem of the normal motion blur.

Thank you!!

awsome explanation and tutorial fire video🔥🔥🔥

Once again, may I ask , will you be at GodotCon?

8:24 Hmm, I wonder, since you know that the error would always accumulate outwards (due to the way sampling takes in to account linear velocity more than angular) maybe you can just nudge the result towards the center? I'm not sure but I think the error is linearly proportional to spin speed (or some other more/less simple proportion) and figuring out this proportion you could know how much you need to nudge the result towards rotation axis for it to be accurate. Although I might be completely wrong here...

Awesome work! Love it! Also the structure of the video - first outlining all the problems... it's a drama, the solution comes as a twist to the story when I thought all hope was lost. I do wish that the last step with enveloping mesh somehow gets to work behind the curtain with zero user setup. Good luck :)

Ъ.

Does this method have a way to account for shutter angle? When filming a video, one of the most important rules is to maintain that the exposure time is half the frame time, also known as a 180 degree shutter angle rule. So rather than capturing motion and blurring it over the whole duration of the frame, you should only be capturing half. But that also assumes a fixed frame rate, so I don't know how it would work under variable refresh rates as you'd get in most games.

First thing I do in every game is to disable motion blur. It's never implemented correctly.

Awesome work. Did you play Doom 2016/Eternal? That game has the best motion blur I ever encountered, the game feels like it's running smoother with it on.

interesting implementation. I wish it didn't cause the artifacting over a complex background, I personally find that quite distracting. It's definitely a hard problem to solve, made even harder for me because I usually work in sandbox games in which any post-processing needs to account for anything the player might build, and as such needs to deal with fast rotating things of which the size or rotation axis is not known and can not be pre-defined in engine.

I wish to be this good at something one day. Excellent work!

"motion blur is retrospective in nature" I'm not so sure about that 🤔

The thing I find most annoying about motion blur in games is that our eyes already have built-in motion blur! We're seeing a blur of a blur. Our visual cortex is designed to compensate for internal blur but does poorly with the various implementations of simulated blur; not least because we're seeing a *blur of a blur*. Ugh.

I want to see a stylized implementation. Can this be used to create real-time stylistic smears? I've seen UE add ons that add smears on a per character basis, but I'd like to see smears relative to the camera.

I know some of these words.

Very interesting but why do you call dilation "dialation"

This while probably annoying in normal gameplay for reasons SirRanjid outlined, would work awesomely with photo-mode.

I don't care what anyone says. Motion blur looks like shit.

This is a very cool break down! Each of the freeze frames in your demo look really great. It could be a cool experiment to make it respond to an area of focus (like gaze, but there probably isn't fast enough gaze tracking yet). Maybe if gaze tracking ever gets to that point in VR or something, the motion blur skeptics will be willing to keep it on.

I don't give a shit if you dropped out elementary school. DUDE YOU ARE TALENTED !!