OTOY Forums

I import foam Particle made by PhoenixFD and I use octane rendering it.
The color of foam is changing every frame. Is it a bug?

Could you share your foam particle with me? You can email it to [email protected]

ChrisHekman wrote:Could you share your foam particle with me? You can email it to [email protected]

I can not email it because the size of the particle is large with 4GB. I can only upload some pictures.


There should be a certain probability that the foam that was originally white will turn yellow.

Im sorry, but im not sure what I am looking at here. I assume these are both octane renders of two different frames of the foam?
But im failing to see any yellow, or meaninfull difference between the two pictures?|

Do you mean this part turning more white? That looks like it just became more "foamy" and there is more refraction going on between individual droplets of water?

ChrisHekman wrote:Im sorry, but im not sure what I am looking at here. I assume these are both octane renders of two different frames of the foam?
But im failing to see any yellow, or meaninfull difference between the two pictures?|

Do you mean this part turning more white? That looks like it just became more "foamy" and there is more refraction going on between individual droplets of water?

WhiteFoam.png

White is what I want, but sometimes it turns yellow.

HRHBG wrote:

ChrisHekman wrote:Im sorry, but im not sure what I am looking at here. I assume these are both octane renders of two different frames of the foam?
But im failing to see any yellow, or meaninfull difference between the two pictures?|

Do you mean this part turning more white? That looks like it just became more "foamy" and there is more refraction going on between individual droplets of water?

WhiteFoam.png

White is what I want, but sometimes it turns yellow.

That makes sense. But I just do not have enough information here to figure out what is happening here.
Maybe show me a picture of the yellow render? Maybe show me your material? Would it be possible for you to create a smaller example of the issue and send it to me?

ChrisHekman wrote:

HRHBG wrote:

ChrisHekman wrote:Im sorry, but im not sure what I am looking at here. I assume these are both octane renders of two different frames of the foam?
But im failing to see any yellow, or meaninfull difference between the two pictures?|

Do you mean this part turning more white? That looks like it just became more "foamy" and there is more refraction going on between individual droplets of water?

WhiteFoam.png

White is what I want, but sometimes it turns yellow.

That makes sense. But I just do not have enough information here to figure out what is happening here.
Maybe show me a picture of the yellow render? Maybe show me your material? Would it be possible for you to create a smaller example of the issue and send it to me?

This error occurs when using batch rendering. Everything is normal during preview. Only the color of the foam will continuously change during batch rendering.


When rendering is wrong, the foam behind the cart turns blue.
I will try to send a smaller project to your mailbox and I guess the reason is that RTX acceleration is turned on.