Phoenix FD Texmap, Negative colors are clamped

[David H]

Hi,

If I use a phx texmap set to velocity, the negative values are clamped. I've tried using max's maps (output, colorcorrect) to offset the values up into the positive range but no luck.

Is there a known fix for this?

I understand that max's materials and maps probably don't like or support negative values. So if there's no fix then could the phx texmap have an "offset" parameter (nothing fancy needed, just a simple add is fine)?

[Ivaylo Katev]

usually the velocity has a big value (50-1000), this means beside the offset you have to multiply it by some small value to make it visible. if you have doubts, right clock the rendered image and check the color values, the negative ones are displayed, the result is not clamped.