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Found 12 results

  1. Hi, How do you render a IFD file in the mantra node? I know how to create it by enabling disk file in the driver. Once the IFD is created what do I do? I am trying to render to disk. I read the manual and I did not really see how to render and IFD in mantra node. Thanks, Evan
  2. Dear fellow magicians, I am trying to setup render machine for mantra distributed rendering (using mantra -H command) and I am struggling to make environment variables working. Lets say I have two machines - one being master and one being slave. Master have env var $ROOT=/home/trandzik/proj/dreams Slave have env variable $ROOT=/mnt/TRANDZIK01/dreams Distributed rendering work with no problem when geometry is included in IFD file and no file paths are used in scene. Once I want to include path to some file (lets say texture located in $ROOT/img.jpg), slave won't find this file because master save IFD with hardened path (using its own $ROOT var). Slave is therefore trying to find image at location /home/trandzik/proj/dreams/img.jpg instead of /mnt/TRANDZIK01/dreams/img.jpg and of course fails rendering it. Please, does anyone know how to generate IFD with non-hardened environment variables? Using distributed rendering is great option for fast lookdev and I believe it would be great to setup its pipeline correctly with environment variables. Thank you very much Peter
  3. I need to reduce render time for volume so, I tried to use make ifd format. then, how can I render this IFD? the only thing I can is just to click render to MPlay. I wanna render to disk.
  4. Hi, Ever since we started running H16 we've been seeing random frames get stuck on the farm for no reason. They take much longer than the surrounding frames, but they render normally when they are requeued. That goes for Mantra renders, Ifd generation, and geometry caching. Has anyone experienced the same thing? We are running Houdini 16.0.600 on a Windows 10 farm and Deadline 9. Thanks, Ahmed
  5. IFD Workflow Basics

    I put together a simple intro to writing/rendering IFDs, using Packed Disk Prims to make better IFDs, and using HQueue to efficiently generate IFDs for rendering with Mantra. https://vimeo.com/223443000
  6. Hi everyone. I've got a little problem, I'm trying to render my work in mantra, but the problem is that houdini reload the geometry for each frame and it's a bit long. When i render it in the render view everything works well, Houdini loads the geometry once and render each frame very quickly, but when i render it on the disk , he loads the geometry for each frame, and i don't know why. what i render is just a simple sphere instance on a lot of point , arround 10 million. Is there a way to cache the geometry for the render ? Thanks.
  7. Hi, I was wondering if anyone knew why as soon as i hit allow editing of content my shader stops working in my ifd's and it just renders grey scale? Does anyone know why this and or a solution to it? Do I have to cache my shader maybe after I do this? If so how does anyone know how I go about doing this? Many thanks for your help. Kind regards, Frank Engen
  8. Hi, I'm attempting to use images embedded in a HDA for a light-rig. All is fine when rendering within my houdini session. However when I export IFDs and execute them on the farm (command line mantra) I get messages along these lines and the textures are missing in the renders: [16:41:26] mantra: Unable to load texture 'opdef:/Object/turntable?ttBG.pic' Within the HDA references to the embedded textures are relative, i.e. opdef:../?ttBG.pic Is that possibly causing a problem? Do I need to make these absolute? Or is there a flag/switch somewhere to make the IFD export include the embedded images? Or is this just a limitation of IFD export? I can imagine embedding every texture into the IFD for every frame being quite wasteful. Any one have experience with this? thanks Ben
  9. Hi there, I am working on a few pyro shots which get quite heavy geo wise (around 6+gb per frame). We are using "Royal Render" (comparable to Deadline) to deploy to our farm. RR needs ifd files. My question is, if there is a possibilty to just link to the already cached bgeo files in the ifd? All machines have network access and could just grab the bgeo files. As it stands right now, I spend hours caching the bgeo files, then generate the needed ifd files via the rop, which again takes hours and produces quite big files aswell (comparable in size to the geo files). So to me it seems, that the ifd files not just link to, but contain the actual geo - which seems a bit odd to me. Am I missing an option to check? Do I somehow need to declare the geo? So far I only found the option to compress the ifd file. I am working on H14. Help is apprecieated. Alex
  10. tile index

    Hi, does anybody know how to change the tile index without recreating an Ifd? Is there any commandline arguments or python filtering for mantra? Thanks nap
  11. Hi! Looking at transformation matrices of IFD files really confuses me. For one they seem to do exactly the opposite of what the camera's transformation parameters in Houdini are indicating, which I think is because Mantra moves the scene and there's no actual camera like in OpenGL. However what's really confusing me is if I have a camera with SRT, ZXY order and transformations rot(45, 30, 0) and trans(10, 5, 0) I get a transformation matrix in the IFD that looks like this: 0.866025396499 0.353553407243 0.353553391789 0 0 0.707106765732 -0.707106796641 0 -0.500000012618 0.612372443928 0.612372417161 0 -8.66025396499 -7.07106790109 6.53176023263e-008 1 Looking at the fourth row, I would expect to see 10 and 5 somewhere, but they don't show up. When I rebuild the same transforms in Nuke I get identical values for each component but for the last row. But the results from the IFD seem illogical to me. I'm really stuck on this, maybe you guys can help. Thanks, Nhat
  12. Hi Is it possible to change camera ray_transform inside IFD using python? I can modify properties using tile script and filterCamera() function, but I can not access the transform of my camera. Thanks