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About Neil78

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  1. Rog's Turmoil

    Hi all This is a VFX test and breakdown for my little test commercial "Warrior" - A major technical milestone in the project; using HoudiniFX of course and rendered in Mantra. The result of much learning, thinking and great help and tips from the sidefx and Odforce forums. thanks all houdini peeps! https://vimeo.com/122350240
  2. Rendering particles

    Yeah - also try and think in terms of layers... so a gentle smoke sim - using a generic smoke shader - basic smoke - and imagine this comped with the particles..... Play around with glows / blurs / even Z depth info to drive CC'ing.....
  3. HQUEUE client on OS X

    Ok – annoying - its a lot simpler i must admit on linux. You just follow the command prompts in the shell on each client and install Hqclient. (running not as root) Yes SESI can really help you – it took me a while to get my system up and running. Here's a few more pointers which can throw things out if incorrect. Double check your hqueue installation. Sometimes the HQueue installation is accidentally picking up the Python distribution that's installed on the system by default instead of the Python distro that gets installed in /opt/hqueue. Check if there are any Python environment variables before running the HQueue installer. For example, do you have $PYTHONHOME, $PYTHONSTARTUP or $PYTHONPATH set in your environment.... Double check your exports being shared – and any file permission inaccuracies. I'm using NFS on linux which works great - but I still I had to change some options (do the research) so that files created and read had the correct permissions. Double check your shared folder and mount points. All mount points must be the same on the clients – And lastly check your hqserver settings – that the shared network host, shared network path and shared network mount point reads correctly. On Linux its this file: /opt/hqueue/hqserver.ini
  4. HQUEUE client on OS X

    Hmm - yes that sounds problematic.... Ive opted to forget about an hquser - so install hqclient as a regular user not as root. - as i have a simpler set up to you . I just have the same named users across 2 machines - with same group and password id's - as for the clients not showing up - are you able to select a client in the webpage and select activate? (sometimes they get disabled) Now that you know your shared network is working fine - i'd be tempted to restart an installation for both hqueue and clients - also do you have support with sesi - they can really help you debug your set up..
  5. HQueue errors in Win7x64

    Hi - ive got some pointers here - might help you: http://forums.odforce.net/topic/20255-hqueue-client-on-os-x/
  6. HQUEUE client on OS X

    Also - i forgot - make sure your target HFS reads as $HFS; and always make sure Hqueue server and client is running - on linux....is; # Restart HQueue Server alias hqsr='cd /opt/hqueue sudo ./scripts/hqserverd restart' # Restart HQueue Client alias hqcr='cd /home/neil/hqclient ./hqclientd restart'
  7. HQUEUE client on OS X

    Hi Well Hqueue can be fiddly no doubt. Im running Hqueue across H12.1 versions and on Linux currently (so should be similar to MAC) - and i came across such problems before. To try fix - Firstly make sure your machines can see your shared folder. ls -lh /sharedFolder/../.../example.hip Next, try loading the .hip file using non-interactive Houdini on your client machines. Source the houdini_setup in the installed '/opt/hfs..' directory and then run: hython Then in hython, run this command: hou.hipFile.load("/sharedFolder/.../..../example.hip") See if that command runs successfully (i.e. no output) or if it raises an exception or error. Finally, you need to confirm that the clients can reach the HQueue Server. To do this create a python script called 'test_connection.py' as such : import xmlrpclib server = xmlrpclib.ServerProxy(your Hqueue server address, mine for example is "http://ODIN:5000") print server.ping() copy the created 'test_connection.py' file to the shared folder, so that clients can access the file. On a command line on a client, cd to the shared folder and type: python test_connection.py This should return a value of 'true' – if not double check your '/etc/hosts' file for IP and hostname definitions Finally, on your Hqueue render ROP - make sure 'Render target hip file' is selected, and specify your correct path as per shared folder, or use the $HQROOT variable here. If you still have problems there must be an error with either your python installation ( or any python variables you have set) or there is a problem with your Hqueue installation..... Its tricky but SESI can really help you with this - they did me
  8. motion vector pass and Nuke workflow

    Good to know - thanks eetu; i remember finding recently that P was not world P but camera P. - and thus great for Z depth pass in Nuke.
  9. motion vector pass and Nuke workflow

    Hi Marty - good point - i didn't know that, i'm assuming that 'P' is not - so overcompensating perhaps - but i've never actually tested the difference. gpapaioa - i've found 'raster space' to be best - getting normalized values into vector blur.
  10. volume step size

    Oops = good point
  11. volume step size

    I remember somewhere divide by 10. So if your volume has a division of 0.1 - set your volume step size in mantra to 0.01. Its just a guide - whatever is acceptable.
  12. Here's a slight variation on a theme to .......http://forums.odforce.net/topic/20233-motion-vector-pass-and-nuke-workflow/
  13. Pyro 2 scatter export

    Dam - there must be a way to set that up, calling upon some attribute in a shader. Yes though it seems the pyroshade vop no longer exports that variable. The old scattering technique did produce lovely results; but my god was it slow!! I noticed in volume light it says: "The data stored in the point cloud includes the emission (Ce) as well as point area/volume information and position (P)." Perhaps this can be used to derive a matte or vex variable........? Or what if you find difference between diffuse and Ce (Emmision) in Nuke - does this perhaps give you scatter data?? Keep us posted im interested to know more.
  14. motion vector pass and Nuke workflow

    I use this technique - transferring to screen space - check it out. You could normalize the motion vectors in Houdini - but also MV2Nuke works well for this, as it means that when using the vector blur in Nuke - the 'multiply` value makes sense - such as 0.5 for 180 degree shutter etc. I'd be really interested in any other techniques you might come up with. But also I think that the motion blur in Houdini is so fast, more often than not motion vectors are not always needed in Nuke. motionvectors.hipnc
  15. Houdini lag on Mint 13

    Thanks Asegura, that was a while back and i figured it all out. i'm on Mint 15 XFCE right now and Houdini rocks on it. Looking forward to trying the next big release soon.