Grid Selector
The Grid Selector controls the resolution of the grayscale data in the terrain. The terrain's resolution determines the amount of detail in your terrain. The higher the resolution, the more detail appears in your terrain's surface. However, higher resolution values also increase the rendering time for your scene and require more memory.
The highest resolutions should be reserved for terrains that are very close to your camera or where detail is important. For terrains that are far away, or where detail is not so important, lower resolutions are more appropriate.
To set the Terrain resolution using the Grid Selector, click the Grid Selector icon at the bottom of the Paintbrush Controls and choose a resolution from the menu. Brush sizes may appear to vary depending on your resolution, but in fact they remain proportional to the size of the Terrain Canvas.


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