water_mesh_base

The Normal Detail map stores normal information required to achieve an additional (detail) effect of Normal Mapping. Normal map helps to create ripples (cat's-paw effect) on the water surface.

The texture is 2-channeled:

• RG values store two components of a surface normal.
• B value is calculated based on the R and G values in run-time.

With absolutely white normal map	With ripple-simulated normal map

This texture specifies foam on water. The engine samples the foam texture twice to create plausibility of the real world foam behavior.

The texture is 3-channeled:

• RGB values store the color.

LUT texture that shows the color of the bottom. Depending on the depth, the engine chooses the color of the water and multiplies it by the depth LUT texture. This generated LUT shows how deep the photon goes through water until completely scattered.

The texture is 4-channeled:

• RGB values store color.
• A value is used to create "transparent" water near the shore. In other words, it defines the fog density.

The underwater fog color. The Sun and Environment lighting affect this parameter to create the final underwater fog color.

The transparency of the underwater fog. The higher the value, the more transparent the underwater fog is.

Fog Transparency: 5.0	Fog Transparency: 30.0

The size of the planar reflection map, in pixels: the higher the value, the better the quality is.

Available sizes of the map are:

• 128 — creates a reflection image with 128x128 resolution.
• 256 — creates a reflection image with 256x256 resolution.
• 512 — creates a reflection image with 512x512 resolution.
• 1024 — creates a reflection image with 1024x1024 resolution.
• 2048 — creates a reflection image with 2048x2048 resolution.
• 4096 — creates a reflection image with 4096x4096 resolution.
• Quart height — creates a reflection image with the resolution height/4 x height/4, where height is an application window height.
• Half height — creates a reflection image with the resolution height/2 x height/2, where height is an application window height.
• Height — creates a reflection image with the resolution height x height, where height is an application window height.

Distance from the reflection camera to the reflected object. In other words, the distance equals the distance from camera to the reflective surface plus the distance from object to reflective surface.

Pivot offset specifies the position of the pivot point.

Pivot Rotation specifies the rotation of the reflection pivot point.

The environment reflection roughness of the water surface. This parameter helps to tweak reflections on the water surface relative to the environment.

The occlusion factor for environment reflections on parts of the water surface with negative normals. Using this parameter enables simulation of reflection of waves on the water surface removing too bright areas on waves close to the horizon.

• By the minimum value of 0, no occlusion is performed for reflections of waves, no matter what normals the water surface has.
• By the higher values, occlusion is performed for reflections on parts of the water surface with negative normals that have a certain slope. The higher the value, the less intensive reflections are on the surface parts with negative normals.

Removes pixelation and makes caustics look smoother. When smoothing is not required, you can disable this option to gain performance.

Caustics Distortion state disabled	Caustics Distortion state enabled

The 3D Caustic texture determines the pattern of light rays refracted by the water surface.

The texture is 1-channeled:

• R value defines the caustics pattern.

UV Transform coordinates for the caustic texture.

Distance from the water surface downwards, at which light shapes fade, in units.

Distance Fade: 20.0	Distance Fade: 40.0

Scale of the water refraction.