tfGrid adds a grid operator, with adjustment handles, to your terrain; with these, you can adapt and manipulate the landscape, including a grid brush to smooth, elevate, paint and sculpt the land.

tfGrid also offers a Control Grid Source setting (the grid you're manipulating with tfBrush) as a custom operator output map.

This means that the control grid can directly be rendered using the operator shader and inspected in the Preview tab, and the Grid Monitor.

Once activated, the tfGrid needs to be made a child of the terrain to operate.

A 5x5 grid with points visible.

Properties tab

The grid generates points and each of the blue points can be clicked and dragged up or down inside the viewport to create deformation.

Once the points have been moved, they leave value lines, which indicate how far they have been deformed from their default state.

The deformed points also change color.

The most deformed lines and points turn pink, with those in between being a lilac color.

Points X

Determines the number of points on the X-axis.

Fewer points will create more deformation in the grid.

Conversely, more points will allow for more detailed distortion of the terrain.

Points Z

Determines the number of Points on the Z-axis.

The tfGrid on the left has the default setting of 5 x 5 points. On the right, this has been increased to 25 x 25 points.