Originally posted by alexx
[B]there is a very filthy workaround to get motion blur on 3d particles…
btw: threshold does not do anything for cloud particles… at least i was never able getting any effect out that i would have expected.
back to the motion blur:
take your cloud particle system.
give it a particle instancer and make spheres (best with the same size as the cloud particles have.)
software render the instanced spheres with motion blur and the checkbox in the renderglobals “keep motion vectors” (you will have to render in maya .IFF files).
render your regular cloud particles without motion blur as .IFF format.
now take the command line tool “blur2d.exe” in the maya bin directory and execute it on the 2 images.
use the (non documented) flags -v and -c to get the motion blur from the instanced render to the cloud render
(-v = file with vector infor
-c = file with color info)
the motion blured color file will be the result.
nice side-effect: you can tweak the motion blur rather well and fast then…
but as i said: filthy
p.s.: to get the streaky look you can also take your regular rendered images (hard or software) to e.g. shake with an average node and blur the result which looks very streaky as well and does not need the motion blur render. [/B]
Alright… time to resurrect this thread a moment. I’m trying to use this technique now but I cannot get the blur2d.exe to run correct. I am typing:
blur2d.exe -v blurredOne.iff -c colorOne.iff -l 2
blurredOne and colorOne are my two rendered file obviously. What the program returns is:
blurredOne.iff + colorOne.iff ==> ./colorOne_blur.iff
Cannot read colorOne.iff - file doesn’t exist or is of unknown format.
What’s up with this? Do I need the full path? I tried to do that but the command line won’t let me type long enough to enter the full path for both files. Any help would be super appreciated. Thanks.