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Found 50 results

  1. Hey, I would like to add some detail to the interior faces of my fractured geo. I have separate materials for the inside and out. I added a displacement noise to the inside shader. The only problem is that it breaks the edges. How can I get some detail like that on the faces without breaking the geometry? Thanks
  2. Hello Everyone. Im trying to test my foam particle settings on my ocean but every time I change a setting it re-creates the ocean displacement taking 7 mins each time before it starts to render. I know I can bake out the displacement, but how do I attach it to the ocean surface shader so it doesnt re-create it every time I change a setting.? Or am I doing this totally wrong and there is a better way?
  3. When exporting image planes, how do I include displacement in Pz? My surface has a displacement towards the camera. Right now, in Pz I'm getting the z depth to the surface itself, no displacement. Can displacement be incorporated in Pz or do I need another export variable for that?
  4. Faceted Normals After Displacement

    Hi all, I've set up a displacement shader to rotate an object. As you can see, when the displacement is applied, the normals are not smoothly interpolated. Is there anyway to fix this without subdividing the entire object? Displacement_Normals.hipnc
  5. How to convert a displacement to polygons ? I use the dispalcement texture to render the model, but I wanted to get the displacement polygon. how?
  6. Edge Dispalcement Shader

    With the new tutorial I am trying to somehow get this to work with default mantra, like the original tutorial, But i have some issues, hoping someone will point me in the right direction. I have attached the hip file here hoping someone will download, and correct it and show me how its to be done correctly for mantra. EdgeDisplacement_01.hiplc
  7. Sculpting packages like Z-brush can create surface detail which sometimes has some slight overhang (like folds etc). With the vector / tangent displacement tools in Houdini, can I create (or work with) a disp map that would create a slight overhang? The pic shows a flat base plane for clarity.
  8. I'm getting a faceted appearance using a disp map, corresponding to the pixels in the disp map. Any way to smooth this out *without* increasing map resolution, increasing shading quality etc? Do I need to create vertex normals from the displaced geometry normals somehow? The displacement map is a float exr image, so color depth is not a problem. The vex code doing the displacement is as follows: vector mapclr=0; float mult=1.0; mapclr=texture(map,s,t); P+=mult*mapclr.r*normalize(N); N = computenormal(P);
  9. Hello everyone! I am creating a pool of lava and am struggling with creating displacement for it. The problem is the remeshing every frame. How can you make points which are generated at the first frame follow the colour they have been given? My idea is once I have figured this out, to use those points for the position of the displacement. Any help is greatly appreciated, thanks! points_follow_colour.hip
  10. Move points at render time?

    Hi all, I wasn't sure whether to put this into shading or effects, so it just ended up here. The title says it all - is there a way to move points at render time? Just apply a noise or something like that, essentially a render time VOP Network. The reason is I have a heavy piece of geo that just needs to sit in the background and wobble slightly. That's all. It seems very wrong to write out geo for every frame.
  11. Hello! I can't get to work the new ocean surface setup, even with the provided scene files. I the viewport it's seems fine, but it renders flat. (and without the foam) Yes, I baked the spectra node. Can anyone point me in the right direction? There is none learning material about the new ocean surface, not a single tutorial, only the masterclass. Thanks
  12. So I used the Triplanar Projection vop to give some geometry a diffuse texture. It was really easy, and I am happy with the results. However, now I want to add displacement to the same object with a displacement map which matches my diffuse texture. Since the triplanar projection vop only outputs color, how can I supply my shader the outN and doffset values that the Displace Texture vop supplies?
  13. SHADERS MISSING FROM H16

    hey everyone hope that y'all having an amazing time, just a quick question.., now i know sidefx got reed of some old stuff and introduce new cool stuff in the H16 but i have just notice that there are few shaders missing from the material palletes from the generics shaders like displacement, mantra surface, surface model are gone all we left with is principle shaders and it aint what i am looking for right now does anyone know how i can bring the older shaders back many thanks
  14. Workflow for this sample mesh is as follows: Create dynamesh, subdivide to 2 mil points Apply variety of alphas to mesh ZRemesh to 8k poly, subdivide to 7 mil, project details Use UV Master Create vector displacement with attached settings, base mesh is around 100k What am I missing here? Was able to get blackpixel's example working just fine: https://www.sidefx.com/forum/topic/46764/#post-211000 [sidefx.com] Should I try Mudbox? Renders and settings: 7 mil poly 100k poly with vector displacement 7 mil poly 100k poly with vector displacement 7 mil poly 100k poly with vector displacement UV Layout: ZBrush settings Houdini settings
  15. Object Displacement

    Hello, I'm attempting to recreate something similar to the reference geo in this link: I'm using a tube and then painting where I want my displacement but I'm not happy with the results as it isn't really resembling the reference image. Does anyone have any suggestions as to a different way to approach this? Thanks for taking a look. disp_geo_js_v01.hip
  16. Detailed displacement?

    Hello community, I'm trying to figure out how to get this effect, im pretty new to houdini and my thoughts are with some noise and displace along normals, I played a lot with vopsd and solver but I cant get the shapes and amount of detail, could this detail be done in mantra? (just wondering, I would prefer to do it just in sops) Here is the video (min 7:39) Any tip on how to achieve this kind of pattern/displace will be great, thanks!
  17. Hi there, is it possible to let Mantra only calculate displacement on areas where the camera looks at? I'm working with very huge oceans.
  18. Displacement on high poly surface

    Hey, it took some time to find out but the problem I have is due to the poly density of the flip mesh. I want to apply the displacement maps from the ocean surface onto that mesh but I get weird artefacts until I polyreduce the flip mesh. So it seems as if the displacement maps can't be applied to highly detailed flip meshes, can it? I surely can use the adaptivity settings but thats just a stopgap. Some areas will remain pretty dense and if I reduce everything I lose surface detail. Is there a special trick to apply those maps propperly? BTW: this problem only ooccurs when rendering with Mantra. When I load those maps into Redshift it works fine.
  19. I am trying to kill displacement when geometry gets a certain distance from camera. I've taken the geo bounds and was able to get that into black/white information in my shader. I am controlling the falloff with a fit range. I can multiply that black/white information against the displacement value and the geometry will not visibly displace. The problem I'm having is that it seems the geometry is still being subdivided in those areas. Anyone know how to kill that geometry creation when the displacement value is 0?
  20. Hey guys. So i've done a flip simulation and created a VDB mesh from it. Then created a new scene and added ocean waves from the shelf tool and added displacement to the VDB mesh using ocean waves. So now i'm happy with my displacement on my flip mesh, and i want to create an infinite(large ocean) and composite these 2 renders later in post production. How do i apply the same displacement on my VDB mesh to an infinite/extended/large ocean? I have attached a screenshot and my .hip file, hope you guys can help me out Ocean_Displacement_01.hip
  21. Hello! I am making a geometry deformer to simulate large waves for a student film (we don't have the resources or time to sim out a large tidal wave), and I'm having difficulties with the shader. I'm starting with the default ocean shader to get a feel for it, but the displacement and creation of the white caps and foam are being stretched and look wrong due to the deformer. My thought process is, is there some way to include my deformer in the displacement process so it is factored in when white caps/foam are made? If not, is there some other way to effectively use the ocean shader on a deformed grid (without losing the white caps/foam)? I'm really hoping to be able to have the white caps/foam on the crest of the large wave the same way it appears on the small waves created by the ocean displacement. My files are attached, I apologize for the messy VEX in the hda, I've been hopping between VOPs and VEX in its development. Also note: the displacement maps are set to .picnc instead of .pic because I am working in Houdini apprentice currently. Thank you! displacementworkaround_v01.zip
  22. Hi guys I have a flip tank simulation from ocean surface and it has a displacement map created from the ocean below. So as I render the flip object with mantra when "Allow Motion Blur" is off everything is OK but when I turn on the "Allow Motion Blur" it can not create the displaced geometry in render time and it takes for ever although cpus are on 100% load. And I should say the "Allow Image Motion Blur" is off and I just want motion vector pass from rendering. I tried different rendering engines and raytrace motion blur but no change. I try to create a small hip from that now. I would be really thankful if you can help me with this problem. Update: I added hip file and sorry for the size. ForumFiles.rar
  23. Hi Houdniks, I have a behaviour on my large scale ocean, which I can't break down to the source. It seems, the map breaks the neighboring edges or kind of a tiling problem. Don't mind the overall plastic look of the ocean, no serious shading until now :-) My grid is distorted by a noise, but the problem occurs even without the distortion. Any ideas how to fix this? Thanks in advance Dominik
  24. Hi there, I'm trying to wrap my head around renderman 20 in houdini 15.5. Now there's a tricky thing with displacements going on. When building stuff, I usually group the entire object in a single geometry node via subnet and combines, applying materials via the material SOP and specific groupings of the underlying geometry. this in turn creates a string attribute on the selected primitives with name “shop_materialpath” and the given path to the pxrWhatever shader. stuff shows up in RIS renders, everything behaves as expected. fine. this would behave equally, if I just added the “shop_materialpath” via AttributeCreate and the proper path to the shader by hand on a primitive. however, now I want to displace something. the only working way in renderman 20 seems to be to create a pxrDisplacement with some input (f.e. pxrWorley) and add the rendering parameters “Displacement Shader” (shop_displacepath) and “Displacement Bound” (ri_dbound) to the geometry node in /obj. Apply the shader, set bound > 0, displacement shows up in renders. fine. BUT: Now I thought: “Hah. Just transfer these parameters on a primitive base via AttributeCreate as well, done.”. However this doesn't seem to work. Instead I have to extract the geo into a second geometry node in /obj via ObjectMerge and again apply the said parameters on the top-level geometry node itself. Are “shop_displacepath” and “ri_dbound” not assignable to primitives by hand? Or am I missing a crucial step? Perhaps something else has to be applied as well? Any Ideas? -Marcus
  25. Hello, I have posted blog post explaining some concepts of volume displacement and how to do it with Arnold (in Houdini but possibly in other packages supporting Arnold as well). link Hope somebody will find it useful. Juraj
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