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Found 208 results

  1. rendering problems

    Hello, I want to render and export my simulation as a video; however, the first time I tried to render it, it succeeded but I cannot save it as a video, the error statement was shown as the first screenshot; the second time I tried to use mantra and directly render it to disk, but it gave me another warning shown as the second screenshot. Does anyone know how to solve the problem, or what is the best way to export my simulation as a video? Thanks in advance!!
  2. I am reaching the final stages of a personal project of mine and I was wondering if this render times were okay for the setup I have since I swapped to redshift 3 days ago: 1070 ti 8gb ryzen 9 3900x 32gb ddr4 3200mhz It takes 40 to 50 minutes to render the following (no DOF nor mortion blur): NOTES: The scene consists on bolts and sparks with incandescent material + the emisssive sword, 2 Volumes (you are looking at the smallest one which is around 8million voxels) + 3 mesh lights inside the capsule (bolts, sparks and a scorch on the impact area of the bolt) and 3 others spread around the scene (the Highlighted ones) EDITED: NOT EDITED: These are my settings: In all mesh lights I copied the override sample values because I dont trust it xd and all have 64 bounces for volumes too. I hope more experienced artist can help me out with this one if you find something odd in my project. As always, thank you very much EDIT: No, I wont be using the Optix denoiser and this is how the noise on my scene looks:
  3. At my lovely studio we have a bit of an unfinished Houdini render pipeline. We're able to use the farm to bake out geometry, but only serially. Also, writing out the IFDs is serial. We only have a handful of engine licenses. This is painless for sims, but this is a problem with SOP geo renders that can be baked out in parallel. Mantra renders, however, work in full parallel glory. How can I put an "opparm -c /path/to/ROPoutputdriver execute" script call (or any such code) somewhere where it will execute IN the IFD as it's rendering, but not during IFD generation? I tried putting that code in the Mantra's (set to render nothing) Pre-frame/Post-frame script parameter, but those execute AT IFD generation (which is serial), which doesn't help. Would a Python SOP work? If so how would I trigger it on frame render?
  4. I am trying to render a simulation done with a flip which is made up of 22 million particles. After having made several attempts the houdini console throws me a: 9576: Fatal error: Segmentation fault Saving application data to .... Here below I leave the image and the project files in case someone is willing to help me. Thank you so much!! Help me please!!! Collider.obj Test.hipnc
  5. Can anyone give me advice in rendering my water simulation? PLEASE WATER SURFACE CACHE is flickering for some frames! I attached image of 2 frames, first one is flickering and the other one is not. Just some of this frame has this problem and I have no idea what is wrong with surface cache. I rendered this water surface with glass material, and I've tried render with other material but it was same with flickering. And Surface_cache seemed fine with it's shape. Is it problem with Normal? Please let me know if you have any ideas. THANKS!
  6. Hello! I need some help to understand how to use some string expressions, I'm using Redshift ROP and I want to change the render paths on some AOVs using the Custom File Prefix from each AOV. I want they will be saved on the same folder like the main output path but with other names. So, I'm using this string for the main render path: RS ROP output file name prefix: $HIP/render/$HIPNAME/$HIPNAME.$AOV.$F3.exr And I was trying to use this expression for AOV custom path: `${chs("RS_outputFileNamePrefix"):h}`/BumpNormal.exr Because I saw in this link that this expression should return the directory from the entire string without the file name and extension but I'm not getting the file directory using this expression like this. In conclusion, I'm looking to set the render path only one time and the AOVs with custom path can load it and use other names or formats. Thanks a lot!
  7. Pyro Sim not rendering properly

    So i got some help from a guy on here for my uni project. The file he gave me looks amazing but when i come to render it, the fire doesnt show at all. Does anyone know how to resolve this?PyroSim.zip
  8. Hi I am absolutely new to houdini, so sorry for my ignorance. I'd like to give a mist-like shader to my particle animation which made me struggle whole day..... I dropped billowy smoke shader to spheres, and suddenly my particle object wasn't seen in the render view. How can I make it looks more realistic? I have attached my scene file. Help me.........(༎ຶ⌑༎ຶ) +) I think my particle effect is far from the perfect aerosol spray effect, so please feel free to give me some advice to make it better. I'm trying to make it as a volume with a VDB node, but not sure that it is the significant try. Thanks for reading. aerosol spray.hipnc
  9. Hello, I have a render issue. In the renderview the fire looks as it should look but in the final render it appears only on the geometry. Do you have an idea why? Thank you.
  10. Hi, Im trying to create different overrides for diferent arnold render_out nodes, like takes, or like the render setup in Maya, I know I can use the option of use phantom object or matte in the arnold_out node, but is more powerfull to use overrides, it give us the possibility to override more properties like cast shadows, recieve shadows...etc (I dont know this names exactly right now). The thing is I go to out, and I create a node Set_parameter (arnold node) and I conect this to an Arnold_OUT, in the Set_Parameter I create the path for the section I want to override, in this case is an geometry node (selection: obj/geo1/*) inside for example I put a box for testing, and next I write the attribute I want to override, in this case I want to override the arnold parameter from geometry, in this case I write...for example... subdiv_type = "catclarck" subdiv_iterations = 3 ok, this two parameter are working for me, when I activate that arnold rendere node to render, that parameter change and I can watch it in the render, even also work for me this parameter override: matte = True but, and here is my problem, I really want to override the visibility tab arnold parameter, like visibility rays to camera, self shadows an so on...but I cant it work, in this case I write... visibility_camera = False and this last one no work for me, how can I do for this work??? (visibility_camera for example), I only go to the parameter in geometry, arnold, visibility tab and I let the mouse over the parameter, and in the floating window I can watch the parameter, in this case is ar_visibility_camera but I thing for use this attribute we have to remove the ar_ , but event with this I cant get the override for visibility. I let here the official Arnold web site with Set parameter info... https://docs.arnoldrenderer.com/display/A5AFHUG/Set+Parameter Thanks.
  11. Smoke houdini

    Smoke rbd houdini + hip file In this asset, the dynamics of the interaction of solid objects with volimetry as well as the dynamics of the destruction of the object are added. https://artstn.co/m/JnJq hip file Cloud and fire houdini + hip file This project presents the procedural modeling of stones, creating a lightning strike, working with sand, clouds, and fire. The final animation can be viewed at the link below or in my portfolio. https://artstn.co/m/Bq6a hip file Lava smoke houdini + hip file This asset presents the dimanics of hot lava smoke, the dynamics of the lava itself, and the shaders of smoke and lava The final animation render can be viewed at the link below or in my portfolio https://artstn.co/m/pJaG hip file Ice smoke houdini + hip file In this asset, not only work on creating cold smoke is presented, but also work with sand and its dynamics, particle emitter, procedural modeling of crystals and stones, as well as a full render of a scene with shaders. The animation that happened in this can be seen on the link below. https://artstn.co/m/d0Ak hip file
  12. Hello Peoples, its my first Time typing in a forum, but i am looking forward to meet the right people here, because in my social area nobody wants to speak with me about Houdini. Haha. As the title says, i want to know how i transfer the pressure/stretch/bend attribute to the final Render Geo and make the Stiffness or the Stress visible in my Rendering. Has anyone a clue? And sorry if there is a topic already. Thanks very much
  13. Hi, I want to use a Mixamo character for a scene. I'm using v18 and when rendering, the render uv cuts/uv seams are visible! I tried in 17.5 and they don't! I want use v18 because the render result is much better. Is there any way to hide UV cuts on v18 render? Sorry for my english and I hope you can help me, thanks in advance. demon.fbx character.hipnc
  14. I left a TOPs network rendering some camera angles, but it's stopped with missing frames in one of the sequences (1-112 where it should be 1-144) Dirty and cook returns done. The caveat is I have 'Cook frames as single work item' on for post-processing nodes (ffmpeg and then some python in this case), when I deselect this I get all the frames and it picks up. How can I get it to check the frames, discover which are missing and pick up where it left off? OR would it be better to let it cook individual frames and then group the output by filename and push that into ffmeg?
  15. Crazy ocean displacement

    Hi everyone, I got a Pretty annoying Problem here regarding an attempt to render a displaced Ocean. So I'm playing with a ship thats comming out of the Ocean (think of pirates of the carebean) and the Memory comsumption Always runs out of Control and causes a crash. Doesnt really matter how low I put the Ocean spectra. I'm testing with a res of 10 and also tried downsampling by a value of 5 in the shader (what should Pretty much turn the displacement into a blobby mess) but nothing helps. Actually only happens when there are a lot of droplets in the air. Running on 80 gigs of ram here. Ist almost as if it goes crazy with displacing each and every drop although its masked out. Also doesnt make sense considering I can downsample as much as I want and it still does this. Furthermore added a mask volume on top of the whole splathing stuff to be sure ist really masked out and doesnt receivve any displacement. Any idea About this?
  16. switch takes and render

    Hello. Im trying to run inside houdini a python script to switch takes and render after every take. It works but it only render the last take: takes_list = hou.takes.takes() for take in takes_list: # if "Main" in take.name(): continue else: print("setting to take: {}".format(take)) hou.takes.setCurrentTake(take) print(hou.takes.currentTake()) rnode = hou.node("/out/Redshift_ROP_CHAR") rnode.render() what`s the problem here? thank you.
  17. Hello people! I'm currently trying to render pyro exoplosion with the motion blur in Redshift and I didn't succeed with any of my aproaches. I tried Convert to VDB , and then Merge Volume in Velocity mode with the motion blur ON but nothing works yet. I found few HIP examples but they neather don't work. Is there anybody who ever did this? Too bad there's nothing about it in the Redshift official documentation too. Please help
  18. How could we achieve something like that? I am genuinly interested on this technique. masking the effect, proyecting the texture, displacing the volume thanks
  19. Hello Houdini folks! For first let me wish You happy new year! And for second, let me have a tiny question . How can I render in Redshift transparent background png. with hdri lighting (RSLightDome)? Is it possible somehow? Thank You very much for any advices. And finally, can I kindly ask U, to post a hip. file, or print-scr with this "transparent-background" preset in your attachment? Many thanks Michal.
  20. Have a bit of a challenging (for me at least) lighting and rendering challenge. My glass is in the shape of an inverted pyramid that is partially filled with liquid. The glass will be rotating back and forth to move the liquid inside. Would appreciate feedback! I know that my meshed liquid should slightly overlap the glass "walls'. Also I am assuming my fluid meshing is wrong in that the sides should be perfectly smooth, not rough as they appear in the attached. I am using a single HDR dome light. What are some other rendering and lighting tips when doing liquid in glass?
  21. How to remove points from render

    I was following a tutorial from @librarian (a nice dude) but i stepped on the following problem: the points render and at sop level appear. I have everything exactly the same on my proyect as the tutorial and still they appear on sop so they end up rendering It should look like this: My proyect grilla3.hip Model solu2od.hipnc Thanks a lot
  22. Next to each other, a comparison between a detailed terrain in the viewport and terrain in the render that lacks so much detail it's almost another terrain. In the screenprint I show the geometry tab in the render section of the terrain. The terrain has been converted to polygons. Why do I loose detail I already have in the viewport?
  23. Hello; In Mantra, is it possible to render a region, in sequence? Thanks.
  24. Hey everyone, Whenever I go to the render viewport in Houdini 17.0.352 I get the following message "Error : failed to save output to file "traceback (most recent call last):" I joined here both the error message I get when I start Houdini and the Message I get when trying to render using mantra. BUG report.pdf Trying to render a frame manually (save to jpeg) also leads to an error. I tried reinstalling Houdini or even deleting preferences but none of this worked. I believe this is a bug linked to Python, but can't figure out what exactly. -- Could you guys please help me with this situation ?
  25. Hi all, I'm rendering some jellies, in water, in a glass tank. Any pointers as to how to optimise this? My render times are huge. Using mantra.