Geometry Shaders
5651 8 2- sascha
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- Simon
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- sascha
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- Simon
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There are several things that may be relavent.
1. Render from file, this means mantra only loads the geometry straight of disk as and when it needs it, completely bypassing any cooking/loading of sops. Very efficient for very large datasets. We use this all the time, it's great. Thousands of objects can be stored in an ifd file (Houdini version of rib files) as references only keeping them very small.
2. Instancing, usual sort of thing instancing geometry to particles etc.
3. Houdini procedurals - I've never used it though so can't comment on how well it works.
All of these things are set up under the render tab of each object at object level.
1. Render from file, this means mantra only loads the geometry straight of disk as and when it needs it, completely bypassing any cooking/loading of sops. Very efficient for very large datasets. We use this all the time, it's great. Thousands of objects can be stored in an ifd file (Houdini version of rib files) as references only keeping them very small.
2. Instancing, usual sort of thing instancing geometry to particles etc.
3. Houdini procedurals - I've never used it though so can't comment on how well it works.
All of these things are set up under the render tab of each object at object level.
The trick is finding just the right hammer for every screw
- sascha
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That sound very interesting! I'm not interested in an instancer and I don't want to have the master objects in the scene. I would like to write sequences of plotted envelopes or shapes of some hundred objects onto the disk and read them at run-time from the Shader or Mantra. Can I do that with the first option you mentioned? Houdini procedurals are also very promising because I'm looking forward in parsing the geometry from a custom file format. But for that it seems I have to do some coding with the HDK. It would be nice if I can get around with the .ifd format.
- edward
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- sascha
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- EigenAlex
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The RunProgram is a Mantra Procedural. You can find that in your Geometry Object (under Render tab > Geometry, then change “Geometry as is” to Procedural. So you can write your own geometry program that will get called at rendertime.
I think you might still have to comform to the Houdini's .geo format, I think… :?:
I think you might still have to comform to the Houdini's .geo format, I think… :?:
- ykcosmo
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