Page 1 of 1

VDB emission in Octane Blender

Posted: Thu Jun 04, 2020 8:43 am
by Blakil
Hello. I am writing here, because the forum for the free plugin is in the paid section, lol.

I found it impossible to make an explosion from a VDB file. That is, the density works fine, but Blender ignores the temperature specified in the emission. I tried to change a lot of settings, such as emission scale, or a combination of different types of emission in materials. But I despaired, nothing helps. Here are screenshots of what I had. Explosion taken from OpenVDB Sample Section.

Image

Image

Re: VDB emission in Octane Blender

Posted: Fri Jun 05, 2020 6:26 am
by bepeg4d
Hi,
the easiest way to control the volume emission is to connect a white Texture Emission node, with power at one, and then use a Volume Gradient connected to the Emission Ramp, to control the coloring.
There is also a Max Value in the Volume Gradient to control the intensity.

ciao Beppe