Matteo Marson

I read many posts about motion blur and I came across some techniques and algorithms to achieve it (accumulation, sub-frame rendering, etc...) but I found no information about vector motion blur.

I'm new to shader programming and i'm not quite shure i can figure it out by myself, so i'm asking you if you have any tip on the subject or even already done patches.

I know how to get velocity information for the current frame, but i've no idea how to apply it to blur the image accordingly.

Maybe create a mask to damp the blurring effect according to the motion vectors?

I read many posts about motion blur and I came across some techniques and algorithms to achieve it (accumulation, sub-frame rendering, etc...) but I found no information about vector motion blur.
I'm new to shader programming and i'm not quite shure i can figure it out by myself, so i'm asking you if you have any tip on the subject or even already done patches.

I know how to get velocity information for the current frame, but i've no idea how to apply it to blur the image accordingly.
Maybe create a mask to damp the blurring effect according to the motion vectors?

vector-motion-blur-with-jit-gl-pix

check out the pass.motionblur.maxpat example patch. this uses jit.gl.pass with the motionblur builtin effect. this effect loads a shader file called mrt.motion.blur.jxs, and uses the built in VELOCITY buffer capture to achieve the effect.

feel free to ask follow up questions here.

I saw pass.motionblur.maxpat already, but seems like the blurring effect is clipped within the bounderies of the shape, im i right?

It's great for things like rotating objects but is there a way to avoid this?

Thanks Rob!
I saw pass.motionblur.maxpat already, but seems like the blurring effect is clipped within the bounderies of the shape, im i right?
It's great for things like rotating objects but is there a way to avoid this?


it may be, but there is the motion-guass-blur variation which blurs the velocity texture prior to applying the effect.

Blurring the vectors' texture works very well!

Blurring the vectors' texture works very well!
here's an example


really well put together example. had to put the shadowquality down to "med", my computer can't handle those nice HD shadows :P

Hiya, looked at the pass.motionblur.maxpat patch recently and Matteo's patch above, it seems this shader is no longer compatible with GL3......

Vector motion blur with jit.gl.pix