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Everything posted by gramx

  1. Hi, I am trying to export a fluid sim from Houdini 16 using the new vertex animation textures node. I am having a few problems hooking up the material in Unreal. I have copied and pasted the Fluid UE4 code but have found that there are no notes on how to hook it up and get it working. Does anyone know how to do this? or is there a sample scene or tutorial on setting up the Unreal materials? I have attached hip and export files plus a screen grab from Unreal. Thanks Graham flip.hip flip_col.exr flip_mesh.fbx flip_norm.exr flip_pos.exr
  2. Hi, I am doing some more FEM testing and have found that if you are using a target object then you can't use solid fracture as well without pieces jumbling up. Anyone know a way of fixing this. I have attached an example scene, if you enable fracturing on the solid object then you will see what I mean. Thanks Graham FEM_break.hip
  3. Yes, your right it works in 15.5 also. I will try it in the latest build of 16 and then report it as a bug. Thanks Graham
  4. Here is a small test of what I am simulating. I want to add extra fracturing to this but can't as it doesn't work when using target geo. fenceFEMtest.mov
  5. Houdini to Unreal - Vertex Animation Textures

    oh yes, found it now GDC2017_VertexAnimationTextures\Source\vertex_animation_textures.hda Thanks
  6. Houdini to Unreal - Vertex Animation Textures

    Just tried this build Houdini FX 16.0.547 but still old HDA
  7. Houdini to Unreal - Vertex Animation Textures

    Hi Luiz, I have been looking at the hip files and it seems that you have a newer version of the Vertex Animation Textures Asset. I get an error saying incomplete asset definition. Are you able to send over the latest asset or will it be available in the next Daily Houdini build. I am running 16.0.542 Thanks Graham
  8. Houdini to Unreal - Vertex Animation Textures

    Thanks Luiz this was just what I needed to get going.
  9. Hi! I am exporting meshed FLIP simulations to Alembic Format for rendering in 3DS-Max and Vray. The file sizes are getting up to 50 gig for one cache. I can read this file on our server but when rendering on the farm the file sometimes becomes unstable and locks up access halting all rendering. Eventually it unlocks. My plan is now to export an alembic file per frame so there will only be one machine accessing a file at any one time. So my question is how can I export a sequence of alembic file from Houdini (export.001.abc, export.002.abc ...)? I have tried putting $F into the file name but this doesn't work, anyone got any ideas? Is it possible to change the filename with a Pre-Render Script? Thanks Graham
  10. Hi Has anyone tried exporting VDBs from H14 and then tried rendering then in 3DS-Max V-Ray? I am reading them with Phoenix, I have been doing this successfully with H13 but I cant get the same setup to work from H14. Its as if the vdb export has changed??? Thanks Graham
  11. FEM constraints H15

    Hi, I am working on some soft body destruction with FEM, and I wanted a way to constrain some of the geometry around the edges. Not had any luck so far is there a way to do this. cheers graham
  12. FEM constraints H15

    Thanks again this makes sense now. I will post up a few examples when I'm finished. cheers
  13. FEM constraints H15

    Thanks for your help, and the hip Your hip file contains a cloth setup rather than FEM soft body but I think it works the same. I have tried pintoanimation with a FEM object and it does work. hip attached. I am wondering how you could go about and pin one end to another object to create a floppy tail. cheers FEM_pin.hipnc
  14. PYRO on GPU OpenCL crash

    Hi I am doing some Pyro sims and have been using openCL mode which is way way faster! I currently have a Quadro K4000 and we are looking at buying a TitanX to test. I am having an issue where my graphics card keeps crashing whilst I am doing Pyro sims, small sims work fine. I am using H14.0.258 I also have the lastest NVidia drivers. Is anyone else having issues with openCL, its so fast I want to get it working! I also used GPU-Z to check video RAM it was using just over 1 gig when it crashed, Ieaveing 2 gig available. Thanks Graham
  15. Houdini Bacteria Growth

    Hi Has anyone got any ideas on how to create multiplying bacteria growth in Houdini like in this video clip:- Thanks Graham
  16. whitewater birth control

    Hi I have been playing around with the new whitewater solver in 12.5 and was wondering if there was a way to control the birth amount of spray/foam/bubbles individually. You currently have a birth rate in the whitwater_replicate node that controls all three outputs together. You can also adjust the emission from curvature/vorticity/acceleration within whitewatersource, however this also affects all three outputs together. What I would like to do is increase the amount of spray particles without affecting the foam and bubbles, or maybe decrease the amount of bubbles without affecting the other two. Is this possible? Thanks Gram
  17. PYRO on GPU OpenCL crash

    Thanks for advice! When I am back at work I will test the GPU RAM again with:- HOUDINI_OCL_REPORT_MEMORY_USE=1
  18. PYRO on GPU OpenCL crash

    Hi, I've not tried openCL on CPU. But I found this link to experimental openCL driver- http://www.sidefx.com/docs/houdini14.0/news/13/opencl
  19. PYRO on GPU OpenCL crash

    No, but I just did another test with the same Pyro sim. Temperature got to 58 degrees, fan speed was at 35% and RAM 1.6gig The same simulation works fine under CPU, but a lot slower. Should I try a faster fan speed?
  20. VDB export from H14 to V-ray problems

    Thanks for the info, I have also been told that the nightly build of V-Ray can now read the new VDB format, although I haven't tried it yet.
  21. VDB export from H14 to V-ray problems

    Your right John!!! I just set this env value and it now work. )) Thanks!
  22. VDB export from H14 to V-ray problems

    Looks like the VDB format has changed, this is from help- VDBs with vector values now apply transformations to the voxels as well (depending on the vector type). This breaks backward compatibility and may result in scenes changing when loaded into Houdini 14 if you use vector VDBs. Is there a way to export the old VDB format? I can't even load a VDB from 14 into Houdini 13!
  23. Per-Frame Alembic export

    Thanks graham!! I will give this a try G
  24. Per-Frame Alembic export

    I need to do more tests but it appears to be working.
  25. Per-Frame Alembic export

    Yes, I am using H14. Don't use ROP Alembic output. I used ROP Output or file cache instead "myalembic.$F4.abc". I also export vdb the same way myvdb.$F4.vdb