Below are the material settings used to accurately shade the glass and water.

Set the base_weight to 0 and increase the specular_weight to 1. Change the IOR to that of glass (1.5). Increase the transmission_weight to 1.

Lowering the transmission_weight value attenuates the amount of light that passes through the volume of the glass (distance-based coloring). By default, transmission_color is white, which means no distance-based tint. Try lowering it from full white.

Repeat the settings used for the glass material. However, make sure that the Index of Refraction is set to that of water 1.33.

To create a milky liquid, it helps to add small amounts of sub-surface scattering. Additionally, to make the liquid appear more vibrant, you could experiment by adding a small amount of emission_weight to it.

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