OTOY Forums

Perhaps this is best considered a feature request, as I dont think there is any way to do this currently

I think we need a curve to map emission to match anything resembling TFD emissions
For instance here is an image with a properly scaled emission As you can see only the hottest parts of the temp channel are actually emitting

Now look with IPR gamma of 8 Closer...as we can see the emission does indeed include some of the detail in the temp channel seen in the TFD openGL preview...just showing the values are there and emitting

Now here is normalized Clearly you are seeing all the detail is present in the temperature channel, but if you see the power and efficiency values, this is not a workable solution


It almost acts as if there is a lower limit to the emission, the lower temp elements do not have enough power.

Could there be a way in the future to apply a mapping curve to the emission input? So that we can have a more logarithmic mapping....increasing the power of the lower temp elements.


Octane seems pretty good for clouds and smoke....but a little weak on the fire end

I think part of the problem is my TFD sim is scaled from 600 to 2300 for temp....pretty standard for TFD
Whereas octane likes 2000 to 7000

EDIT:
That should be compensated for by the emission scaling in the octane_volumetrics properties...

But the numbers make no sense....scaling 600 to fall into the 2000 lower limit would be something like 3.3, but instead a number like 3200 is more appropriate?????

Anyhow, a curve over the emission mapping would be useful