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Hi,
I'm trying to animate a machine that renovates grass fields. For this, I created a lawn with grass, clover, old grass and other stuff that sits in a lawn. I created all this with Pflow, a bunch of low poly object distributed over a plane. The goal is to let the machine run over the grass field, and removing all the old and unwanted stuff (+close up inside the machine to see how it works). Everything is working just fine, untill I tried to merge the machine in this grass field and animate it.
The problem seems to be vray motion blur. From the moment I turn this on in the vray camera, the scene preparation before the actuall render, takes forever. When it finally finishes, the rendeirng itself is fast. Without motion blur, speed is acceptable.
But I also notice that scrubbing backwards in time, and then hitting render, even without motion blur, slows things down a lot. If I do this with motion blur on, and try to render, it literally takes forever.
When I have the cam moving from frame 0 to 50, then stays still untill 100, then moves again, when I render frame 75 (so nothing is moving), it also takes forever to prepare the scene.
When I render the same frame a second time, it renders fast.
Scrubbing backwards makes things slower, so it makes sense that when using motion blur everything gets slower too, as it needs to consider the previous (and next?) frame to calculate the blur.
I've rendered scenes before with Pflow and motion blur, but never with this many shape instances.
Is it normal that everything gets so slow, even when nothing is animated except for the camera? Are there things that can be done to handle Pflow scenes better, especially with motion blur?
Any help is greatly appreciated
Thanks,
Wouter
I'm trying to animate a machine that renovates grass fields. For this, I created a lawn with grass, clover, old grass and other stuff that sits in a lawn. I created all this with Pflow, a bunch of low poly object distributed over a plane. The goal is to let the machine run over the grass field, and removing all the old and unwanted stuff (+close up inside the machine to see how it works). Everything is working just fine, untill I tried to merge the machine in this grass field and animate it.
The problem seems to be vray motion blur. From the moment I turn this on in the vray camera, the scene preparation before the actuall render, takes forever. When it finally finishes, the rendeirng itself is fast. Without motion blur, speed is acceptable.
But I also notice that scrubbing backwards in time, and then hitting render, even without motion blur, slows things down a lot. If I do this with motion blur on, and try to render, it literally takes forever.
When I have the cam moving from frame 0 to 50, then stays still untill 100, then moves again, when I render frame 75 (so nothing is moving), it also takes forever to prepare the scene.
When I render the same frame a second time, it renders fast.
Scrubbing backwards makes things slower, so it makes sense that when using motion blur everything gets slower too, as it needs to consider the previous (and next?) frame to calculate the blur.
I've rendered scenes before with Pflow and motion blur, but never with this many shape instances.
Is it normal that everything gets so slow, even when nothing is animated except for the camera? Are there things that can be done to handle Pflow scenes better, especially with motion blur?
Any help is greatly appreciated
Thanks,
Wouter
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