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art3mis

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Everything posted by art3mis

  1. At least in the Scene view, confused as to why Area Lights seem to be made up of several lights instead of being 1 flat emitting source? Seems quite misleading...
  2. Hi Getting a strange error out put to the console when I try and render a test scene from a tutorial I am following. My scene seems to render ok but the following error appears. Does this indicate an error with my houdini environment (on Windows) or rather is it the .hip file itself causing the issue? [09:08:20] mantra: Error parsing tag list ('*'): Tag '*' contains invalid characters [09:14:36] mantra: Error parsing tag list ('*'): Tag '*' contains invalid characters [09:21:34] mantra: Error parsing tag list ('*'): Tag '*' contains invalid characters [09:22:57] mantra: Error parsing tag list ('*'): Tag '*' contains invalid characters Traceback (most recent call last): File "C:/PROGRA~1/SIDEEF~1/HOUDIN~1.20/houdini/python2.7libs\nodegraphui.py", line 741, in closeEvent self.clearNode() File "C:/PROGRA~1/SIDEEF~1/HOUDIN~1.20/houdini/python2.7libs\nodegraphui.py", line 361, in clearNode self.node.removeEventCallback(theRecookEvents, self.nodeChangeEvent) File "C:/PROGRA~1/SIDEEF~1/HOUDIN~1.20/houdini/python2.7libs\hou.py", line 8803, in removeEventCallback return _hou.Node_removeEventCallback(*args) hou.OperationFailed: The attempted operation failed. The callback was never added
  3. Greatly inspired by the piece 'Oscillate' on vimeo. Can anyone point me to tutorials for audio driven animation in Houdini?
  4. Came across the above solution when trying to enable OpenCL globally. This is my exact implementation import hou; def set_opencl(parent_node, parm_value): for node in parent_node.allSubChildren(): for p in node.parms(): if p.name()=='opencl': try: p.set(parm_value) except hou.PermissionError: #this handles the case that the parm is inside of a locked .otl pass hou.session.set_opencl(hou.node('/obj/dopnet1'), 1); But get the following error message. have googled but no solution so far. Can any Python experts help?
  5. Thanks! Lots to digest. So in terms of editing my original script, do I need to somehow first define parent_node (which equates to NoneType)?
  6. Thanks Atom
  7. Thanks! Yes had heard of Andrew Lowell's book but never got around to ordering it:(. Will try to contact the author.
  8. Hi My understanding is that VEX runs entirely on the CPU. But with the right hardware (ie latest Pascal based GPU) the same functionality in OpenCl could be magnitudes faster. Is anyone aware of any OTL or other project which have converted VEX code to OpenCL?
  9. Purchased and installed Indie but when launching I am now informed my version of License Server is too old. (attached)I had previously installed and was using Apprentice. So then tried uninstalling everything via the uninstaller, and reinstalling Indie once more. Launched Indie, License Administrator launches, chose ‘I have a paid license…’clicked ‘License Settings’…same error. A few questions 1 How do I upgrade my license Server? 2 Confused about 'local' vs 'network' licensing. I assume I am using local licensing since all my licensing info is in my 'licenses.local' file. But if this is the case shouldn't Indie launch WITHOUT using the license administrator? 3 I am installing on iMac but later want to transfer to a PC. But reading the licensing info it mentions that you are only allowed to return your license twice What happens if you want to return a 3rd time to install on a different machine? Over the course of 2-3 years I see this as a fairly common scenario.
  10. Thanks, yes finally figured it out. I need to spend some time with tutorials though since I realize the bigger issue for me will be properly baking normal maps from the high res meshes
  11. ok so I need to be at geo level in order to use PolyReduce, but whenever I import an FBX, I'm at the root level. How do I get or access an FBX at the geo level?
  12. Could any Houdini experts suggest how to approach 'swirling clouds' aka hurricane type effects? Trying to create something similar to the following, but on a 'smaller scale' ie greatly sped up. So if you could imagine a whirlpool effect but with clouds instead of water.
  13. Just a heads up Spent a couple days troubleshooting, without luck, even with SESI support to get H16 to launch. Running latest Ubuntu with latest Nvidia drivers 378.13 Solved the issue. Downgraded my Nvidia driver to 375.39 arrrgh Nvidia drivers. If admin is reading this please feel free to move to a more appropriate forum to benefit others
  14. Thanks. great info!
  15. Hi Have high poly CAD models as Maya scenes also with many materials and textures I'd like to preserve. I've successfully exported these from Maya and imported these FBX files into Unity and retained the necessary materials and textures. 2 things aren't working however - the poly count is WAY too high (+5 million tris , verts!) - seem to be missing normals Unfortunately TOTAL Maya novice. If possible would prefer to work in Houdini. Is anyone aware of some good retopology tutorials for Houdini? What about 3rd party tool that would help automate poly reduction while still retaining textures? I've heard great things about the free Instant Meshes for one... https://github.com/wjakob/instant-meshes Any help appreciated!
  16. Still a Houdini novice, but curious what all the fuss is with 3rd party renderers. Especially hearing a lot about Redshift. Can any experienced Houdniks summarize the key advantages of Redshift over Mantra? RS apparently used to create this impressive still http://jm-b.cgsociety.org/art/sculpture-maya-woman-houdini-nude-redshift-flower-figure-pose-dry-ballisticpublishing-cfe-expose12-figures-adult-3d-1345912
  17. In my case TitanX Pascal
  18. Hi Tasked with working with some VERY high poly count CAD files, several million polys easily. heard great things about the updated poly reduce node in H16. Should I even attempt to reduce poly count in Houdini, or is another tool better suited to this?
  19. SESI confirmed they are working with Nvidia to solve the many driver related issues
  20. Would be great if SESI had a printable version of the documentation. Even better, 1 pdf for each sub section! ie Dynamics, Nodes, etc
  21. Could anyone clarify what is necessary in addition to simply running the installer? I installed version 16 including new commercial licensing server but the application does not launch (Linux) Do I need to uninstall version 15.5 first? Do I need to return my Indie license?
  22. Came across this long article on multithreading in Houdini. Can any VEX perts tell me whether this is still relevant? Especially with the H16 release? http://www.multithreadingandvfx.org/course_notes/MultithreadingHoudini.pdf
  23. Not sure if it effects other distros, but there is an annoying default behavior when you ALT-Left Mouse button click in Ubuntu. It moves the entire application Window. This is a common question but no universal solution it seems I've tried the most common solution, modifying the Mouse setting in dconf Editor, org>GNOME>desktop>wm>preferences but afaik IT DOES NOT WORK in Ubuntu mate 16.04. Anyone else have a solution that would work or I can at least try?
  24. ok thanks. Think i figured it out. Pretty sure I was changing in the wrong place Need to go org → mate → Marco → general → mouse-button-modifier
  25. For the Ubuntu distro I am running, in the PPA list, I see a number of CUDA related libraries https://launchpad.net/ubuntu/xenial/amd64?text=nVidia Is there any advantage in terms of Houdini, in installing any of these? In particular, the CUDA Dev Toolkit.