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Found 96 results

  1. Hello everyone, I have recently wrote an inhouse python plug-in in c++ for houdini. H2A is a custom plug-in to export houdini geometry in arnold ass file format to be able to load in mtoa, htoa or c4dtoa. This plug-in exports almost every geometry type to arnold i.e. points, polygons and curves. You can compile or grab the compiled plug-in from: https://github.com/sergeneren/anima/tree/master/anima/render/arnold/H2A P.s. please excuse my sloppy c style
  2. In mantra render, Micropolygon, Ray tracing and Physically Based Rendering (PBR), which one is faster ? What is the limitation ? ( My need : still image, different materials, no motion blur, no fur) Thanks.
  3. render

    HI, how render fur in houdini16? its totally different than houdini 15,
  4. 10 Cores shouldn't be this slow?..Should it? (also hair details don't seem to show here? any ideas)
  5. I've been following the quick tutorial on the SideFX website that links to a vimeo video explaining 'god rays' in houdini; https://www.sidefx.com/tutorials/quicktip-light-beams-through-volumes-god-rays/ However at one point he rotates the camera to avoid looking directly at the box volumes edge because it renders with some funny banding effects. Is there really no other option than that? I tried using a tube but that's worse. I'm thinking it's kind of limited for animations if you have to hide or avoid the edges somehow but like the effect.
  6. Hi everyone, Here's a weird one: I am trying to use the crowdsource to copy a simple agent animation on a point sim. It is basically a swarm test. Now the problem is that when I try to render my agents they render as boxes. So far I have done a couple days of research but I didn't seem to be able to find a solution or anybody with my same issue. The simple answer that I gave to myself was "use the copy sop with some timewarp stamping for each point" but the copy sop gets too heavy to quickly. Does anybody have an idea of what am I doing wrong? I have attached a zip file with the hip and the fbx of the bee animation. Thanks for your help! bees_test.zip
  7. I'm trying to render out my file under two separate mantra nodes, one for the particle simulation and one with the lighting. Neither of them seem to be working? I went to render and it stopped and now the mantra nodes are red. Any suggestions please? Ball Pit Ball mantra nodes.hipnc
  8. Hey, What is up with these white patches? Do i just need to turn down refraction or sim at higher res? Thanks
  9. Hi everyone, I'm in desperate need of some help. For whatever reason I decided to take an Visual Effects Unit for my final year of Animation at Uni and I am completely stumped. Houdini is a completely new area for me and I have so little time to finish my project I am having trouble even understanding what it is I need to do to achieve my final goal. I am wanting to create a simulation which looks like a massive group of ball pit balls dropping onto the floor (I'm incorporating live action footage to the simulation). I'll attach the file with what I've done so far. I'm still playing around with the amount and lining it up with the footage and stuff but I would really love to make them appear more bouncy and also any tips on how I should make them look like they're less shiny and more matte like ball pit balls? Do I need to do that when rendering or incorporate it now? Thank you so much!! Any help would be appreciated! P.S Anyone who could explain this in pure simpleton terms would be amazing Ball Pit Ball Simulation.hipnc
  10. Hey Guys, I am pretty new to Houdini so excuse the noob question. I did a pyro sim and saved it for 120 frames as .sim cache. Client asked for extra frames so i came back and simulated extra 100 frames. When I render I get the proper render for the original 120 frames but for the remaining 100 frames I have a frozen frame at F120. In my cache files I can see the size changing so it seems like the sim went all the way, but in the view port I cant see it (It is frozen after frame 120) and in the render it only renders upto 120 and then frozen frames. I tried re simulating the whole sim for the entire 220 frames but it sill gives frozen frames at 120. SO I am a bit confused as to what should be my next steps to trouble shoot this issue. Cheers!
  11. Hello! When I added image to history in Render View and then restarted Houdini or my file, my images history are disappearing. Is it possible in Houdini to save image history?
  12. Ok, the title appears obvious but my question is that I have found that when I render a still above 1920 1080 the picture won't display properly in a standard display application like windows picture viewer. I understand that those other camera options like 2K or 4K resolution are for video format... So my question is, I have HD images that fit standard display in these applications but the pixel resolution is over 3000. How can create images that are of the highest definition but can be viewed in the standard ways. Maybe I'm confusiing 1920 1080 with pixel resolution or I'm I? Thanks for your help..
  13. Hello, I am struggling with adding all deep render properties inside a mantra node with python. To do so manually via interface is quite simple, I go to node - edit render properties - filter *deep* - add them all. However I am modifying mantra nodes with python and it would be great if I could do the same thing automatically. So far it seems rather tedious - I need to create all ParmTemplates, match their signatures and append to a FolderParmTemplate and set this to the node. Another thing worrying me is menu parameters - I do not need to create interface with menus, can I only set the desired value? Is it equivalent to creating a string parameter and setting it's value to menu item's name (not label)? Thanks, Juraj
  14. Hi I am a new user of Houdini living in Korea. I want to give a vector blur in the direction of the dots. I tried to draw a pass and draw a vector blur in nuke, but the direction is straight. I tried it with normal and I tried it. Failed to resolve for a week. So I simply gave the vector blur to the sphere and it did not work. It seems to be a render problem and I do not know what the problem is. I upload two hip files. Why does the value of the copy node remain the same? Finally, how do you study vop? ... I know that it's related to arithmetic math. But it 's confusing and hard to see. Please help me.. vector_2.hip vector_1.hip
  15. Trying out Arnold for the first time in Houdini and can't seem to find a way to render in the background.? The only button on the Arnold node is "Render to disk". I've searched the Arnold docs, and this forum and can't find anything relating to this. Anyone know how to get the same functionality as in the mantra render node that has the "Render to disk in Background" button.? I'm sure it's something simple, but can't find a button anywhere on the Arnold node to allow this. Thanks for any info E.
  16. Hi everyone , When do ı simulate in houdini about pyro,fluid,grain, I disappoited during simulation or at cache time. :/ For this reason , i ask to build pc for houdini dynamics. But I don't know requirements for system . Processor option may be amd or intel. Max budget 3000$ 3500$. In addition , System ? Cpu? Motherboard? Min Ram? Min GPU ? Min Core ? be grateful for your helpful.
  17. Hi guys, So have a explosion peice ive been working on working upto final render - now im looking for a way of efficiently seperating out each element (Base explosion, dust blast, shockwave, trails) - I would use deep but i know deep files get huge for volumes quickly and im not sure on how the houdini deep pipeline works. - I really dont want to add extra render time tbh, soo any handy or efficient tips? - thought about rendering each element seperately instead too rather than all together - but it would need the holdouts/influence off the other elements and tested this using force matte/phantom but couldnt get what i was after - would provide a hip file but i feel theirs no need this is more of a general how would you go about it? Will give me more control in comp and mean i can do breakdowns of the elements without rendering twice Thanks Chris
  18. Hi, We started using deep rendering and noticed nuke scripts literally explodes if we forgot to check "Exclude from DCM" for each extra passes. My problem is, how do we exclude base components from DCM, like Direct Lighting and Indirect Lighting? There is no Exclude from DCM checkbox for those passes. I tried in H14 and H15. Do I need to manually export those passes in the Extra Image Planes section? Thanks Maxime
  19. I have two objects, one thing I want to turn off the dynamic blur, a reserved, but I do not know how to set. How can I force Mantra to pick up the per-object parameters? Cheers PS: I'm using H13 per-object_mblur_01_119.hip
  20. Hello everyone, I begin to use the take system in Houdini, it seems to be great but I have an issue. I have two simulation that I like in a Dop network, their parameters are setted with the take system. Once I want to export it, I lay down two dopIO node, set the "render with take" on each take, and press save to disk. If parameter "Valid Frame Range" is setted to save frame range, it worked great, but if I have the param setted on "Save current frame" it seems to render the current take (or Main take). Is anyone else having this bug or maybe I have done something wrong ? If someone else have this bug, is there a way to submit a bug to side effects ? Thanks !
  21. I tend to remember that there used to be a render attribute to chose between continuous or discrete deep image samples. I can't find it in v15. Has it been removed, or am I mistaken that there was an option? thanks
  22. I'm trying to get some subtle refraction where objects intersect my fluid. It's working, but I can see spheres from the FLIP particles which is making the fluid seem chunky. It should be a smooth looking liquid. How can I fix this? Thanks! flipChunks.hiplc
  23. Hello! I'm kind of new to Houdini and when I save a frame in mantra ( file > save fram as... ) it doesn't keep the real color which are displayed in my mantra render. I tried TIFF, TGA, JPEG 100% and nothing worked, colors are still different from the one coming out of my mantra render.. Any idea how to keep the exact same color ? Need help, have a nice day guys! Fay
  24. I have this project that involves third party model with XGen fur from Maya, I tried looking for solution and so far haven't found any. Just need to be able to render the scene without need to restyle the hair with houdini hair system. Thanks in advance. P/S will be rendering with Renderman.
  25. I would really appreciate help with doing the simplest possible volume render using RenderMan in Houdini. I always just get a black image. I think my issue is that I don't know how to set up a volume shader... A sample .hip file, or just telling me which nodes to use, would be very appreciated.