The oceanPreviewPlane is a height field with the following attributes.

Resolution

Defines the number of samples relative to the largest side of the plane. Increase the resolution to see more detail on the surface. Lower the resolution for faster playback speed.

Color

Defines the color of the preview plane surface. You can map the color to a surface texture or an Ocean shader. The mapping always uses the outColor from the connected node, regardless of the actual attribute connected.

Displacement

Sets the height of the plane. Displacement is mapped to the Ocean shader. The mapping always uses the outAlpha from the connected node, regardless of the actual attribute connected. This does an optimized evaluation of the texture which ignores added shading engine inputs.

Height Scale

Scales the input displacement. As this value increases, the displacement is more pronounced.