I am so excited that i can render with octane in unreal. but i found octane cant render atmospheric fog or height fog .
is there any solution to render fog with octane? Not using vdb fog.
Moderator: ChrisHekman
ChrisHekman wrote:There are two ways atm
- Place a model (cube for example) in the scene.
- Create an octane material by rightclicking in the content browser and going to the octane tab
- Place the new octane material on the model
- Open the new octane material and create a universal material
- Attach the universal material to material out node.
- Create a volume or scattering medium node and attach it to the universal material
- Adjust the volume settings however you want. (The density is usually to high, and its often good to add a scattering color)
The model should now have fog inside of it. (The camera has to be outside of the model for this method to work)
The other way is to add a medium node to the rendertarget environment.
ChrisHekman wrote:There are two ways atm
- Place a model (cube for example) in the scene.
- Create an octane material by rightclicking in the content browser and going to the octane tab
- Place the new octane material on the model
- Open the new octane material and create a universal material
- Attach the universal material to material out node.
- Create a volume or scattering medium node and attach it to the universal material
- Adjust the volume settings however you want. (The density is usually to high, and its often good to add a scattering color)
The model should now have fog inside of it. (The camera has to be outside of the model for this method to work)
The other way is to add a medium node to the rendertarget environment.
ChrisHekman wrote:Sorry there are some extra steps.
- Reduce the Dielectic IOR to 1 (Same are air)
- Albedo and metal to 0
- Transmission to 1
Or use a specualar material with an Index of refraction of 1 and a medium node.
ChrisHekman wrote:Good to hear.
For in the future, you can change the transmission node by attaching an Grayscale or RGB Color node to it.
I have also included an image that shows where to click to change the transmission and the albedo.
The transmission can be changed by clicking the dropdown menu button the green arrow is pointing at. Select the RGB Color node. Now you should have a white transmission.
The albedo color can be changed by clicking the white color bar the orange arrow is pointing at. You should get a color wheel popup that allows you to select the color.
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