iward1

Agreed, I will continue to look around and see what I find.

That's weird, I actually have a fluid with a negative density and it still doesn't render the interior faces.

Sorry about that, I actually figured out that it does make it crash. I opened a world that already had the liquid in it and it worked fine but when I tried to add more of the liquid it crashed.

Thanks, that worked!

How would I use ISBRH to specify which sides to render?

I have created a custom fluid using forge (several actually) and I have been unable to figure out how to get the back sides of the fluid blocks to render. It looks fine from the outside but when I am standing in the fluid I can't see the sides. I have tried using the shouldSideBeRendered method and this changed all but the sides I am having trouble with. Does anyone have any idea what could be causing this/how to fix it?