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Found 85 results

  1. Keeping displacement using rest pos

    Hello all, I have a simple question after trying hard and also looking into the web and SFX help cards with no success... I have a simple quad mesh with unshared edges, then I connect that to a rest sop, pipe that into a bend sop for deformation and connect that to an attribute vop where I use an anti-alias noise to create displacement on the model. After the part is bent and with displacement applied, I would like to have it back to its original shape before the bend but keeping the displacement intact. I'm doing that as a way to have more control over the noise transformation. Tried using a wrangle sop with @P = @rest; but "duh" enough.... the part comes back to the rest position and the displacement is gone. If I try that same procedure with Cd instead of displacement, it works. Does anyone knows how to get the mesh back to its original shape after the deformation and displacement were applied to it? @mestela mentioned this in his amazing cgwiki page, something like this: Measure deformation Can measure the distance between @P and rest with a wrangle like @d = distance(@P, @rest); And use that to colour the surface, or enable a displacement map to drive wrinkles, or push points along their normal to do hacky squash and stretch. However, I don't have a clue on how to keep the displacement after the deformation and back to its original shape. Any help is greatly appreciated.
  2. Is it possible to use point normals for displacement shading? I'd like my grid to displace in the same direction as the normals are in this video. Houdini Tutorial #7 (Point Normal) - YouTube
  3. Arnold Solaris

    hello guys, does someone succeeded in using correctly the displacement inside Arnold Solaris ? first issue is the subdivision scheme, it doesn't seems to work at all in solaris, I tried to check the "treat as subdivision surface" on the sop import, tried to connect a edit property to the said sop import (adding catmull clark option parameter -from usd tab). second issue is the displacement control itself, usually the parameters for driving it are on the geo node itself, I tried to import the arnold parameters to the sop import but as expected didn't do anything (SOP and LOP being two system I guess that's normal). I have been searching every tut I could and couldn't find any use of displacement, is there someone to bright up my lantern ? many thanks !!
  4. I saw this video where you can turn geometry into displacement. https://www.youtube.com/watch?v=rwzo8LD4Tac I want to know how I can turn modeled geometry into a displacement shader. I'd like to turn the modeled geometry on the right into parameters for a displacement shader for the plane on the left shown in the picture.
  5. Can you prevent displacement in Houdini from stretching? I've thought of creating a scales material, either directly in Houdini or in Substance Designer and export it in Houdini. I want to generate scales procedurally on reptiles like dinosaurs. I also only want the skin between the scales to stretch when dinosaurs move, not the scales themselves. Tiny scales like the ones on this dinosaur. https://cdna.artstation.com/p/assets/images/images/010/901/196/large/jacob-baardse-pararender.jpg?1526848727
  6. displacement in material builder breaks?

    I'm pretty new to Houdini, and try to understand how shaders work. Here is what I don't get. I have simple yet functioning setup in mat: If I select all the nodes above and collapse them into a material, meaning I create a material builder from them, the displacement is broken. See this screenshot: (left side desired outcome, right side broken material builder) Could somebody enlighten me, what is actually happening here? Looking forward to your answers. daily_20_056_material builder wtf.hipnc
  7. I have 2 pralines that collide and break to pieces. They are prefractured with Voronoi fracture, then put into an RBD Sim. I'm exporting them as an alembic and rendering them in C4D. They are polyreduced with displacement at rendertime and this is where I'm running into an issue. The displacement is revealing the edges of all the prefractured pieces before they break and also in the chunks that never actually break apart because of the constraints. I tried merging all overlapping points both with fuse and clean after caching the rbd sim and removing manifold polys with the polydoctor node, but that won't remove most of them, probably because some pieces have already moved a tiny bit apart before the collision. The issue seems to be the manifold polys though, because when I go in and delete them by hand in C4D the gaps between pieces are not visible anymore. Is there some way of merging all pieces that havent breaked apart yet and clean up the geometry of the cached geo at every frame , so I can apply a proper displacement map?
  8. I have 2 pralines that collide and breake to pieces. They are prefractured with Voronoi frature then put into an RBD Sim. I'm exporting them as an alembic and rendering them in C4D. They are polyreduced with Displacement at rendertime and this is where I'm running into an issue. The displacement is revealing the edges of all the prefractured pieces before they break and also in the chunks that never actually break apart because of the constraints. I tried merging all overlapping points both with fuse and clean after caching the rbd sim and removing manifold polys with the polydoctor node, but that won't remove most of them, probably because the pieces have already moved a tiny bit apart. The issue seems to be the manifold polys though, because when I go in and delete them by hand in C4D the gaps between pieces are not visible anymore. Is there some way of merging all pieces that havent breaked apart yet and clean up the geometry at every frame of the cached geo, so I can apply a proper displacement map?
  9. Hi. Like my reference image, I used displacement for the green color. (From Shader) (viewport) (render image) 1. How to soften the edges. (The edge naturally?) 2. I want to add noise to the green color once more, like using a lava shader. 3. It's confusing whether I need to do what I want to do in the shader or in the sop. If you do it in the shader... Is there a way to visually check it in sop? I also attach my hip file. Please advise. Thanks in advance. noise_test_dis.hipnc
  10. Hi. I want to apply displacement to the area I want. For example, I want'dis' to be applied only to the red area as in the image. But I am not sure how to do it in the shader. Could you please let me know? Or maybe it's a reference address. The example file is also good. Thanks in advance.
  11. Hello, I’m new to houdini, so I don’t know much. Is there a way to import particle fluid surface (water fluid displacement) into a displacement texture map? For example, oceanEvaluate node have "export to texture" tab and I can export displacement texture for FFT ocean. Is it possible to do the same for a particle surface mesh?
  12. Hi, How to Render infinite ocean using Redshift In mantra Shader Directly read spectra node, but what about Redshift how to spectra in Redshift
  13. 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?
  14. DOING SOME DISPLACEMENT WITH IMAGE TEXTURES SIMILAR TO THIS: https://www.youtube.com/watch?v=rVTFpMUYETI LOOKING FOR A WAY TO ANIMATED SEQUENCE OF IMAGES(THERE PLAYING A VIDEO WITH DISPLACED GEOMETRY). HALP PLZ! WILL POST LINK!
  15. Hi, I'm having problem with displacement that when I try to add it it just stops rendering some polygons and there are gaps between others. Ive recreated it in a simple scene with noise for displacement. Could someone tell me where I got it wrong and how to get rid of the gaps? Also if you had a sample setup for displacement from exr texture that would be great. I just spent the whole day trying million different things but all have the same broken result. Here is the the .hiplc scene and the original and displaced render. As you can see there is bunch of polygons missing at the top of the displaced one :/ Also image of setup bellow. test_disp.hiplc Thanks Martin I'm using: Houdini FX Version 18.0.349 Rendering with Mantra Windows 10 x64
  16. How could we achieve something like that? I am genuinly interested on this technique. masking the effect, proyecting the texture, displacing the volume thanks
  17. Hi; I would like to use "Turbulent Noise" as a displacement texture in my material, but it doesn't works properly, why? My goal is to achieving a displacement output like this link: https://www.sidefx.com/forum/topic/45673/?page=1 Thanks for helping. Displacement.hip
  18. Hi Guys, is it possible to go ROP > COP > ROP I have a displacement from COP {noise} baked to texture, I would like to shading Color based on P.y but after displacement. Is there a way? I basicely using the same noise for Cd as for Displacement just shifted with ramp into some colors. The only way I found is "ramp from attribute" {from displacement Cd} and than take it back to COP and write textures. But the color is point color so I have to subdivide the mesh way to high. [using Arnold] B.
  19. i am trying to baking displacement map from high poly object to low poly object but it gives me almost completely white image and tangent-spacenormal map is gray image
  20. Check this out guys: The bumps on top of the tentacle are done with displacement. In fact the same displacement map across the tentacle. How can it be, that the amount of displacement seems to be inverse to the thickness of the geometry? I would expect the displacement to be uniform across the geometry, regardless of the geometry on which it sits? Can anybody make sense of this for me, please?
  21. Hi, I tried to recreate gravel / terrazzo floor material, fully procedural. As you can see in attachment, I have white spots artefacts on final output. Also, and I don't know why, I have more obvious problem with displacement. I connected Properties Node with Displacement Bound set higher than Scale, so if I'm not wrong, that should not be the problem. Render is Mantra PBR, default settings. Does anyone have idea why those nasty white spots appear and why displacement break poly's.
  22. So I'm making a collapsing gravestone and i want to export color data using the depth attribute from the interior detail visualize noise scale tool inside the voronoi fracture node. The data needs to be exported into Maya. This setup works for the initial fracture however when trying to merge in the sub fractured pieces from separate voronoi and export them as one exploded view alembic file for testing, lots of pieces start to intersect with each other which doesn't happen normally. I'm guessing the way I've tried to merge the color data into each other has caused the pieces to start intersecting but I'm not sure where in the node graph this is coming from. Also i tested just with the original fracture and the export works just fine and the displacement works in Maya. Just wondering if anyone's had similar issues to this and found a solution. GraveStone001.obj GraveStoneFracture0022.hipnc
  23. How can I drive displacement scales using scatter particles as shown here. https://twitter.com/sandidolsak/status/747419942635569152
  24. Anyone know how to do this ?
  25. RGB Mask

    Hi all. I am new to houdini. If any one has the time I would really appreacheate some help duplicating the RGB Mask part of this video. I need to figure out a way to do trilinier displacement on the object level not on the shader level. if any one has any sugestions as to where I can look or can point me in the right direction i would be very greatfull. Thank you for the help. ~Zorn
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