Motion blur method other than geometry based?

[White Wizard]

Using rayfire cracks removes motion blur (possibly because it turns the geometry into a sort of morph object or something?).

This is probably a basic question, but is it possible to enable image based motion blur in a situation like this? Anything that allows me to use rayfire cracks with motion blur is a welcome solution.

[White Wizard]

Nobody has any incite?

[Morbid Angel]

Hey probably need a bit more clarification, what do you mean by cracks? I think rayfire should produce motion blur no problem, do you get any warnings?

[White Wizard]

Hey probably need a bit more clarification, what do you mean by cracks? I think rayfire should produce motion blur no problem, do you get any warnings?

Ray fire does produce motion blur usually, but if you apply the RayfireCracks modifier, which welds together vertices/edges that are within a certain threshold, motion blur doesn't render for that object anymore.

[joconnell]

Velocity in post might work, most renderers rely on how the vertices of an object move from it's start point to it's end point to generate blur samples so if vert counts are being changed at sub frame times it's quite hard.

[White Wizard]

Velocity in post might work, most renderers rely on how the vertices of an object move from it's start point to it's end point to generate blur samples so if vert counts are being changed at sub frame times it's quite hard.

The issue with post motion blur in this instance is that the fractured geometry is glass. No matter what I try the blur doesn't look right at all.

[vlado]

Is RayFire able to generate vertex velocities? If it can store the velocities in some UVW mapping channel, V-Ray can use those for motion blur (there's an option in the V-Ray object properties). That's pretty much your only hope... V-Ray has no way to divine the velocity information by itself in cases of changing topology.

Best regards,
Vlado

[White Wizard]

Is RayFire able to generate vertex velocities? If it can store the velocities in some UVW mapping channel, V-Ray can use those for motion blur (there's an option in the V-Ray object properties). That's pretty much your only hope... V-Ray has no way to divine the velocity information by itself in cases of changing topology.

Best regards,
Vlado

Damn. I don't believe it does, although I'll have to ask around a bit.