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Found 142 results

  1. I know Houdini focus has been VFX, I have few questions regarding cinematic pipeline. Hero characters, close shots UDIM-s etc. I know by the fact UDIM-s are used in films and often also on hero characters and in VFX pipeline. Main reasin is that you have more control over texture details on specific model. For example: If i have a character face and i need specific part of that face to be more detailed then other i have udim-s and that specific part (UDIM tile / UV tile) that covers that area of face has higher UV texture resolution thus means that that area can have more detailed / higher rez textures. Now typical pipeline i understand is so called Sketch to screen workflow. (same workflow that Aaron Sims Creative Studio uses) and many others. 1. Model is sculpted 2. Model retopology is done (retopo that supports and follows basics for topo that is needed for animation) 3. Model is animated (in maya or houdini) 4. Model is textured (ptex or UV-s) 5. VFX is created 6. Look dev that means shaders are created, lights are created etc) 7. VFX compositing (nuke etc) 8. and final shot(s) are rendered. What i struggle is how to proceed with my pipeline. Need to focus on specific things and not to try study full program as houdini is huge. Need to take one project and step by step try to complete it. SO at the moment regarding my project> 1. Sculpting part is done 2. Retopology part is done 3. UV-s are done (Used Unfold 3D( and model has UDIM UV-tiles 4, Model is tegxtured in Mari (So now model has UDIM textures) tho i was thinking for second to try ptex also but i think it does not support xyz texturing method. And now i am strugeling with shader building as there are not many good tutorials regarding Houdini skinn shader-s. And not getting good result with those. For second i was thinking to use substance painter as in that case you do not have to build shader from scratch. Example https://www.youtube.com/watch?v=gaUoYyWfMzE&t=75s But problem is that Substance does not have fully implemented full UDIM-s support. It does support UDIM-s but you cant paint seamlesly over model that has UDIM-s. Explained here https://www.youtube.com/watch?v=ihQTBc_e8DM So now i was thinking may be i can do skin shader in Maya as there are way more maya btutorials regarding UDIM-s and skin shaders then there is Houdini, But as my plan was also to create VFX effect i would try to do it in Houdini. And now arises question can i do VFX in houdini and shaders in maya and some how bring those over to Houdini or vice versa_
  2. Hello all, I've seem to run into a weird problem on my most recent project. One of my objects doesn't render, with a material or without. Yes it's in my force objects, yes it's a polygon mesh(unless vellum does something weird that I didn't know about). I tried switching the shader from the generic to another material but it doesn't matter. It will render my other polygon object, the ripples, and even the smoke sim later on in the sequence. But it won't render the ball, nomatter what I do. I'm using 17 just incase in matters. This is literally the last step of my project and I can't wait to see it done, but this silly thing has to get fixed first. Thanks for your help.
  3. Hi, I am currently trying to use mantra in distributed rendering mode. (mantra -H machine1,machine2) It all works as expected, but as soon as I connect something into a cached shader (for example a constant into the principled shader), the error “No Code Generator Available for opshader_path_xyz” pops up and it doesn't render at all anymore. It also happens with custom cached shader assets. All works well in non distributed rendering mode. If I unlock the asset, then it seems to work again since the asset is then "in the file", but this is unfortunately not useful in production. Additional Info: I am using windows and the “Force VEX Shader Embedding” checkbox is on. Has anyone experienced this error before? If no I'll submit a bug report. Cheers, Luca
  4. Hi everyone , I recently encountered a problem : the two pics are rendered with all the same settings but a reverse node act on pink prim , as you see , it is obvious that the effect of displacement is different ( pink part ) . By the way , why the displacement of two prims in the red circle are atypism ? The same P , the same N... with same turbulence , get different results ? Someone help me ? Thanke you . displace_test.hipnc
  5. Modulating Motion Blur

    Hello, you helpful people, I'm currently doing snow VFX and I'm a bit bothered by the tube-like look of the mantra motion blur. I'm also using VRay quite a bit which has some helpful features to make the motion blur look less sterile, especially two settings, as shown below. The first setting allows me to move more samples towards the centre of the time interval, simulating a shutter that's not instantly opening and closing. The second setting allows me to move more samples towards the front or the back of the interval. Using the two settings combined, I've quite a lot of control over the look of the motion blur. Is there anything comparable in Houdini or are there some tricks to emulate that look? I think I've diligently read what I could find about motion blur and mantra but I couldn't find anything comparable. Thanks in advance! Paul
  6. Hello! So I just started dabbling in FLIP and have a little river scene everything looks decent except for the whitewater. It takes forever to cache but I have the rasterized particles cached out and the standard particles will be finished caching later this evening. I've played with the spray shader but it looks kind of weird when applied to the rasterized particles, especially with the noise parameter that's [on] by default. I also read a few posts that suggested trying a billowy smoke shader instead. That made it look much better but still not correct so I figured I needed the regular particles cached in addition to the rasterized ones. If that's so they're caching now, but when they're finished what do I do with them? Last time I had whitewater particles cached they just rendered as spheres because of the pscale, am I supposed to mesh them like the FLIP and then layer them? I can post some screenshots once my cache has finished.
  7. Hey ODforce! I recently published the next installment of the Houdini For The New Artist series. This course is all about making Houdini easier to learn, and you can watch the first chapter for free! Here's the link: http://bit.ly/2okYpY4 Some of the main topics include: Chapter 1: How to understand and set up DOP networks Using SOP attributes with the dynamic context Forces Particles Life & Variance How to use groups Rendering Particles Sub-steps, Sub-frames, & Time-Steps Caching Sub-steps & Practical Applicaitons Chapter 2: Texturing & Lighting Techniques How to Integrate a Substance Painter Workflow with Houdini Spot Lights, Area Lights, & Artistic Considerations When Placing Key Lights Utilizing Light Attenuation Gobos Aim Constraints, Near-attenuation Techniques for Reading & Emphasizing Form While Lighting How to Make Light Blockers Shadow Masking Techniques for Controlling Light Placement Component-based Lighting Light Linking Chapter 3: HDAs, Velocity, Normals, and & VOPs What is an HDA? How do you make one? Data Types & Adding user Parameters Booleans, Switch Nodes, & Parameter Behaviors Additional HDA Modifications What is Velocity? What are Normals? An Introduction to the Point Wrangle Introduction to VOPs How to Blend Materials Basic Noise Parameters Additional VOP Techniques Chapter 4: Geometry Types, Animation, & CHOPs Geometry Types & Attributes Introduction to Volumes Animation Basics Channel Groups, Animation Layers, & Motion Trails Introduction to CHOPs Curve Constraints, CHOPS with DOPs, & Additional Settings Chapter 5: Rendering & Compositing Introduction to Multi-pass Compositing Rendering Concepts How to Use Takes Rendering Multiple Jobs De-noising passes Compositing Basics with Houdini Thanks for watching! - Tyler
  8. Hi! I am currently working with H16.5 crowds and rendering in mantra, but when it comes to motionblur, the agents dont seem to have their own deformation blur, but only the velocity blur of the packed prims/pts. I attached a rendered image here, where you can see the problem. The wings flapping is pretty fast, so that should be visible in the MB actually. Is this not working in houdini for packed agents? Unpacking them to get actual geometry is not a solution for me now. Faking it with RSMB is also not an option since it generates bad results. Any ideas? Thanks a lot, Sebastian
  9. My hang glider ran away

    Always wanted to make a cloudscape. Rendered in Octane. About 48 mins on a single GTX 1080. 1600 x 2000 pixels.
  10. Hello node friends! I have kinda of a problem when rendering crowds with motion blur. Since they are packed prims, I cant get my deformation blur to take effect. I'm loading a single rest shape as my base shape for the agent and rig. Then loading 15 fbx with just the animation. So far so good, it simulates the crowd, as all the transitions I need and so on. When it comes to render, I can get all my stylesheets working, but when I try to render with deformation blur, I cant only get it working when the agents are unpacked, any suggestions? I have my blur samples to 16 and geometry motion blur enabled. Sorry if my englando was bad or confusing. cheers
  11. I'm emitting smoke with colors. After adding and creating dop fields import with density, vel and Cd channel for rendering the colors are not visible in the render. When I'm visualizing them as color channel everything works fine. How can I make volume colors visible in Redshift render?
  12. Desktop spec for FX

    Hi everyone, I am working with our IT department to built up a desktop for heavily FX work(mostly water and pyro simulations). Below are three options that we are considering about it, I am looking for any comments or recommendation on different configuration. Thank you
  13. I have a main volume that I want to render. however In that volume I would love to be able to merge other volumes into it and use those volumes as extra image planes. This means that my second volume should NOT show up in my beauty pass, but be available as an AOV. is this possible? Right now I have it setup so I render the second volume separately, but I wonder if the other thing could be done?
  14. Houdini For The New Artist

    Download the Course Files & Watch for Free at CG Circuit https://www.cgcircuit.com/tutorial/houdini-for-the-new-artist Hello ODFORCE! I'm very excited to share my first Houdini course titled: Houdini For the New Artist Houdini for The New Artist is perfect for anyone interested in learning Houdini for the first time. To keep things interesting, we learn about the basics while building "Alfred the Rhino" from scratch. If you're looking for an intro tutorial that gives you a bit of everything, fun to work with, and straight to the point - this is for you. Be sure to check out the full course and download the course files and practice along. Thank you for watching! Course Outline Intro 42s The Interface 12m 26s Setting up Our Project 12m 53s Utilizing Attributes 10m 47s Caching 8m 23s Applying Materials 9m 55s Adding the Backdrop 6m 41s Basic Shading Parameters 5m 36s Lighting 9m 30s Rendering 12m 29s
  15. Hi everyone! I am having an issue with rendering my ocean using Mantra in Houdini. It appears really blocky and I cannot figure out why! This is my first time trying to use the Houdini ocean tools so sorry if my explanation isn't great but I will try and explain my scene. I have cached out my guided ocean simulation and used it to create an extended ocean so it is definitely an issue with the creation of the extended ocean. I have tried so many different settings to try and solve this issue and nothing seems to reduce it at all. So far I have tried changing these settings in the particlefluidsurface node: - lowering particle separation to 0.06 - lowering voxel scale to 0.1 - lowering the influence scale to 2 - increasing the extrude divisions I have attached a render to show the weird blockiness I mean, it can't even see where these divisions would be coming from in the mesh! Anyone have any idea what else I can try or why this is happening??
  16. Introduction to FX using Houdini - workshop

    Hey what's up guys, Only 1 week left to sign up for my fast-track Houdini workshop "Introduction to FX using Houdini". Limited student capacity! Over the course of 9 weeks and 33+ hours of tutorial content students learn how to do procedural modeling, particle-, RBD-, pyro-, FLIP- and whitewater simulations. On top of that we're going to talk about lighting, shading, rendering and we're going to dive deep into VEX scripting. I would love to answer any questions that you might have!!! Cheers, Manu Find the complete course syllabus here: https://www.cgmasteracademy.com/courses/16-intro-to-fx-using-houdini Also for more detailed information on the workshop, check out an interview that was done on 80.lv recently: https://80.lv/articles/making-first-steps-in-vfx-with-procedural-tools/ Here's a quick teaser:
  17. Hi, I hope I'm not asking a question with an obvious answer, please refer me to the relevant resource if there is one! I have a geometry which rests on a plane. After rendering with mantra, looking at the edges of the geometry which rests on top of the plane, these are looking strangely bright ( I've tried with different light sources, different samplings, etc...) I have recreated said issue with a basic box on top of a plane ( see attached images and hip file) The same issue still occurs if I move the box down, and make it intersect with the plane. If any relevant, this is with Houdini Indie 16.5.496, on Mac OS High Sierra 10.13.5 Am I missing anything obvious? Thanks in advance for any suggestion you guys might have! close_up_Active_Render.0001.0.exr higher_point_Active_Render.0001.0.exr funky_bright_edges.hiplc
  18. Hi, I want to render a custom pass for clouds in mantra. The reference jpg shows a custom pass from Maya (density / ambient) and the alpha for the same clouds. In Maya a gradient ramp was used on the incandescence channel. Basically where the clouds are denser should be black and the opposite, for lower density I should have white. Can I replicate that with mantra? I'm using the sky rig tool so everything is calculated at render time. Thank you!
  19. REDSHIFT AOV EMPTY

    if I render with redshift my aov are always empty, whether zdepth, gi, diffuse raw....
  20. Rendering time

    Hi, I have a scene with some effects and i would try to render it. The problem is that every frame each frame spend hours to be rendered. How can i set render settings to speed up rendering process?
  21. Rendering Crowds in Renderman

    Hi everyone I have to render out a crowd scene using Renderman 21.6 however I can't get materials to work using the material stylesheet. I can apply a material directly to the crowd source node, but I want different materials for props. Could someone help. I've looked through the Renderman forums but found little. Thanks you
  22. I've never tested this before, but I'm hoping some of you have - How consistent is mantra when rendering on Intel and AMD procs? Are there perceivable differences? I'm also wondering about how close mantra performance correlates with the non real world cpu benchmarks to determine which procs make the most sense... My pickle is I want to build a big simulation node with dual procs, which I believe will limit me to intel at this stage. I'm also keen on hp for support - intel procs only. But AMD probably makes more sense for the rendering side of things in the future.
  23. Hello! I try to render an ocean with foam. I've got weird results always whenever I put down manualy the oceanfoam sop and link it the cached particles to the oceanSurface shader's oceanfoam particles path. What you can see in the picture that I linked is that first I clicked on the “Small Ocean” from the shelf tool, that puts down automaticly the ocean foam SOP and also creates the link on the oceansurface shader. That renders with no problem. After that I moved the camera, recached the oceanfoam (from the camera) I disabled the link and point on the path of the particles manually, and after that the render is destroyed. It creates these spike artifacts. I made this workflow only for demonstration purpose, to show that whenever the link for the oceanfoam path is made manualy I got this weird render result. Does anyone have any idea what Im missing??? Thank you.
  24. Hi everyone, I am trying to find out how exactly to go about exporting procedural displacement patterns from within a material builder, that can then be used to augment or modify other displacement patterns going into other shaders. Somehow, however, whatever I try I cannot get it to work properly. It does not render the way it should. I do not want to use the layer struct for this, since I want to be able to extract only parts of the displacement texture and not the whole thing being used in my principled shader (inside the material builder). In my mind this should be an easy thing to do, so I am really wondering what I am doing wrong, or if it is actually a bug in Houdini? Either way I would really appreciate if someone would check out the attached hip file and analyse. Perhaps someone knows exactly what is going wrong? Help is much appreciated. Thanks, Doug shader_test_v002.hipnc
  25. Redshift_Mesh_Light

    I'm practicing on Redshift from Rohan Dalvi tutorials but i stuck where he using geometry light or known as Mesh light, it doesnt work for me the mesh is there and linked with the RS_light node but nothing happen
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