OTOY Forums

Hi there, folks.

I realized that there are a lots of tweaks to do inside octane in order to transfer textures/displacement maps properly, etc.

If I need to render an object/character, when its scaled down to 5% (or less) of its original size, what should I change in order to have Octane render match the scene in poser? (poser do it automatically, so when I render - it still renders the same regardless of the scale).

here is an example.

actress - normal scale (100%), octane (fast DL render, just for the test):



same actress at 3%, look what happens to her body tattoos and eyes:



fast firefly - the eyes looks strange in octane compared to this, even in normal size:



any ideas? thanks for your help and patience, guys!

I think one of the material (my guess is displacement) is using absolute metric units, not relative units, so they are not scaled down.

Poser uses a very small scale, so be aware of anything which uses absolute units in terms of scale or distance.

wimvdb wrote:I think one of the material (my guess is displacement) is using absolute metric units, not relative units, so they are not scaled down.

Poser uses a very small scale, so be aware of anything which uses absolute units in terms of scale or distance.

I think you are correct, my friend...is there a way to fix/avoid that?

just reduce the height of the displacement map with the same amount as the model
the model is now at 3%, so her height is 3.8 cm. If the height was 0.001 (is 0.1 cm) reduce it to 0.00003

wimvdb wrote:just reduce the height of the displacement map with the same amount as the model
the model is now at 3%, so her height is 3.8 cm. If the height was 0.001 (is 0.1 cm) reduce it to 0.00003

awesome. thanks! that solved the problem (though I fear there is a hard limit as for how small octane allows me to go...But i'll deal with that bridge when I get there).

do you have any idea regarding the eyes?

I am not really sure. Maybe you need to lower Ray-Epsilon in Kernel section. The distances are so small, that it could be self shadowing. ray-epsilon sets the treshold. In this case i think it should be lower, maybe 0, but that might give other artifacts.

The other way would be to make the entire scene larger in size. Parental all to a group and scale tje group up

wimvdb wrote:I am not really sure. Maybe you need to lower Ray-Epsilon in Kernel section. The distances are so small, that it could be self shadowing. ray-epsilon sets the treshold. In this case i think it should be lower, maybe 0, but that might give other artifacts.

The other way would be to make the entire scene larger in size. Parental all to a group and scale tje group up

I'll try that, thanks!

regarding the enlarging the entire scene - that's what I was aiming to do in order to use "smaller" cameras . I just hope the up-scale will pass properly to octane!