OTOY Forums

BorisGoreta wrote:Is it possible to scrub the volume on the timeline ?

You can set the IPR in full reload mode, but anyway load the volume data is a bit slow for a realtime preview while scrub.

BorisGoreta wrote:I can't get it to emit light, emission is using the same channel as for absorption and scattering and I have plugged in black body emission node.
Texture emission node works . Why doesn't blacbody work ?

The blackbody emission currently uses the emission grid values to get the color temperature, and the value is also used as multiplier for the emission node power. If the grid has low values, the black body emission is not going to show light at all. The texture emission is easier, it only uses the grid values to modulate the light power, but the color used is always the same.

Anyway I think that a ramp shader for volumetrics is in the works. This tool should help to modulate the light intensity/color.

BorisGoreta wrote:How can we make clouds ? I would like to use the last frame of simulation for all frames so I can have a cloud which doesn't change.

Yes, you are right. Currently you can't use only one TFD frame for the whole animation. I will add this feature in the next build.

BorisGoreta wrote:It would be nice if you managed to support adaptive containers, they calculate so much faster.

This is a limitation of the current TFD API. It should be fixed in the next TFD build.

-Juanjo

Not much. But fun test.
Sim took 20 minutes at 50x25x30 grid and 100mm voxel size.
Render was 15 sec per frame.





I tried upping the quality of the sim to 45mm voxel size.
Still can't pull any more detail out of it.

That looks amazing.

Almost pulled the trigger this weekend, and nearly bought TFD... Yeah, I'm definitely waiting to see what new LW will be capable of. I would be so pissed if I ponied up $430 for TFD, and then LW 2016 comes out right after, and new volumetrics allows almost exactly the same pyromaniacal tomfoolery. I have been burned (pun intended) more than once.

There is no info on next LW having fluid simulation. As I understand it they are working on a renderer which can render volumetrics, but it can not run fluid sim. It could render procedural textures as volumes.

juanjgon wrote:The plugin works with the TFD cache files to render them as Octane volumetrics. You only need to add the Octane_Volumetrics custom object plugin to the TFD container Null object to set the path to the cache files, select the grids to be rendered and set some data about the container (voxel size and grid size and offset). And of course you need to add the scatter and emission nodes to build the volume material in the volumetrics node editor.

You need to configure also the TFD plugin path/file in the Octane plugin options panel.

-Juanjo

OK, have tried to do this, however, i'm not very clear on it.

Can you make it a lot more idiot proof? what is the step by step?

A demo scene for us to sim and render would be nice, so we can look into your setup.

Attached you have a TFD demo scene. The path to the cache files is set to E:\tmp ... you should change it in the container to any point on your HD, compute de simulation and set the same path in the Octane_volumetrics panel.

-Juanjo

juanjgon wrote:Attached you have a TFD demo scene. The path to the cache files is set to E:\tmp ... you should change it in the container to any point on your HD, compute de simulation and set the same path in the Octane_volumetrics panel.

-Juanjo

where in the Octane_Volumetrics panel. It is set to a mode of TFD, I set the same path in the TFD bit and get the error 'tdf library not found in (random characters)". If I set it to OpenVDB, it is asking for a specific file, when I look in the place I've pointed the container to, there are lots of files in there. The most recent one, does nothing.

Help

You need to configure the TFD plugin path/file in the Octane plugin options panel. The TFD cache files are not VDB files, so they can't be rendered using the VDB loader.

-Juanjo