Turn on displacement, fails to create dump file (crash).
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Turn if off... it renders!
I have a scene with a grass made of displacement. I rendered a front scene of the house, it rendered perfectly and was very beautiful.
Then I set a scene from the back side of the same house. I added a few more stuff in the scene (a 2d person, a few plants, a bed inside the house).
Then I try to render. FAILS TO CREATE DUMP FILE. After some meddling, I discovered that turning off the grass displacement makes the render work again. BUT its so much more beautiful and realistic with the displacement grass!
Any idea why the displacement map on a single material may be causing this? How to circunvent it? Thanks
My VRAY version is... er... dont remember. Where do I check it? Its 1.48.94 if I am not mistaken.
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@aceshigh said:
My VRAY version is... er... dont remember. Where do I check it? Its 1.48.94 if I am not mistaken.
Window > Preferences > Extensions > V-Ray for SketchUp
That is a beta build number, and an old one.
Latest stable is 1.49.01: http://software.asgvis.com/index.php?option=com_content&view=article&id=182&Itemid=480
Beta testers should check the beta forum for updates.With displacement it's easy to run out of memory, depending on your geometry. It's best to not make too large faces - split it up into smaller parts.
What's Sketchup.exe's when it fails? -
@thomthom said:
@aceshigh said:
My VRAY version is... er... dont remember. Where do I check it? Its 1.48.94 if I am not mistaken.
Window > Preferences > Extensions > V-Ray for SketchUp
That is a beta build number, and an old one.
Latest stable is 1.49.01: http://software.asgvis.com/index.php?option=com_content&view=article&id=182&Itemid=480
Beta testers should check the beta forum for updates.With displacement it's easy to run out of memory, depending on your geometry. It's best to not make too large faces - split it up into smaller parts.
What's Sketchup.exe's when it fails?sorry... but I dont understand this question. "What's Sketchup.exe's when it fails?"
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Sorry, I mean: "What's Sketchup.exe's memory usage (as seen in the Task Manager) when it crashes?"
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as soon as it crashes again I will check it out. I divided the grass into several groups and now its rendering. But its taking such a long time, which is weird, because from the other angle (front of the house) it was quite fast...
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The default settings for displacement is view dependant - ( displaced edge size depend on view ).
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@thomthom said:
The default settings for displacement is view dependant - ( displaced edge size depend on view ).
never really understood what this means.
tell me something btw, what do you mean with "It's best to not make too large faces - split it up into smaller parts."
does that mean I should create different groups with each face? Or that its enough that I divide the faces with lines? Meaning that instead of using a 10x10 meters face, its better that I use a 10x10 meters MESH made of several 25cm sized triangles?
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@aceshigh said:
@thomthom said:
The default settings for displacement is view dependant - ( displaced edge size depend on view ).
never really understood what this means.
To displace a mesh it's subdivided by V-Ray. Default settings in V-Ray is to adjust the subdivision based on the view. So mesh closer to the camera is subdivided more than mesh further away.
@aceshigh said:
does that mean I should create different groups with each face? Or that its enough that I divide the faces with lines? Meaning that instead of using a 10x10 meters face, its better that I use a 10x10 meters MESH made of several 25cm sized triangles?
Displacement eats up memory. If you have a large face V-Ray must hold on to memory for that entire face all in one chunk. But, if you split it into smaller pieces V-Ray can let go of some of the memory once it has processed each of the smaller pieces.
You can find tips and hints if you search for displacement and memory management. I'll probably explain it better than what I can do.And I think (I might be making it up
) that V-Ray prefer triangulated mesh for displacement.
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