I'd like to build a custom i3D shader in VOPs. Can anybody direct me towards a good tutorial on the subject?

http://odforce.net/tips/shader_wiritng_i3d_1.php [odforce.net]

Thanks DeeCue

This looks like a tutorial going over the old fashioned way of building i3D shaders… i.e. VEX code. I'm attempting to soften a few 3D Studio MAX users up to using Houdini instead of MAX's Afterburn plugin for rendering volumetric smoke.

If I show them this http://odforce.net/tips/shader_wiritng_i3d_1.php [odforce.net] I will be laughed out of the office. This is very good for me, however its a bit complex for who I'm trying to help out.

Anybody have a link or have experience setting this sort of thing up using the VOP operators?

Uh… oh….. I'm starting to get the feeling nobody's ever actually built an i3d shader using the VOPs toolset. Too bad I'm working all weekend, otherwise this could become a nice little side project for me. :roll: Anyway, looks like this topic should be discussed further…. sidefx video tutorial maybe? :?:

nudge nudge

i have done this tutorial:

http://www.odforce.net/tips/i3d_intro_page1.php [odforce.net]
and made some decent pixar looking clouds
dont know if this is what you need
hope it helps

Hi, here's a VOPs network of i3d shaders based on Jason Iversen's image3d shader writing tutorial (part 1 only).

To start, switch to Outputs and generate the three i3d files (it'll be created in the same directory as this hip file) using the three image3d ROPs in there, namely i3d_simple_sphere_gen, i3d_sphere_gen and i3d_spherenoise_gen. You can visualise the generated i3d files in Geometry by toggling the display flag of the appropriate isosurface SOPs(reload the i3d files if necessary).

In Objects, there are three atmosphere objects already created (i3d_simpleshere, i3d_sphere and i3d_spherenoise). Turn on the render flag of the i3d object you want and render (either View: Mantra or mantra1). Remember to ‘home’ your 3D viewport/camera if you do not see anything.

Feel free to comment or improve on it . Let me know if there are problems with the VOPs network or the hip file.

I have posted the zip file at odforce, you can find it here http://odforce.net/forum/index.php?showtopic=2429 [odforce.net]

cheers,
tk

I have made another set of vops network based on the metaballs i3d shaders (less the blend_attribute shader) from jason's tutorials. You can check them out here in my posting at odforce [odforce.net].

Let me know if there are mistakes or questions. Please do share alternative networks or suggestions if you have. Enjoy!

cheers,
tk

i did this cloud after odforce tutorial and tried to get disney-pixar look

Wow! Back from vacation. Thanks for this scene!!! Awesome!

do you mean clouds?! ops:
here I have some new renders if anybody likes to take a look
http://www.cgtalk.com/showthread.php?t=199203 [cgtalk.com]
http://www.cgtalk.com/showthread.php?t=198928 [cgtalk.com]
regards z