HD Geometry Controls
From ZBrush Info
Make sure to read the description for the Sculpt HD button. Pressing it will result in a preview of your sculpted model; you must activate it with its hotkey to perform HD sculpting.
DivideHD: Adds an additions level of HD subdivision to your model. This can only be done when Tool:Geometry:SDiv is set to its maximum value. Once you add HD subdivision levels to a model, you cannot add or delete 'standard' subdivision levels from that model.
SculptHD Subdiv: Controls the HD subdivision level being shown (if you have done more than one level of HD subdivision). Higher values let you sculpt at higher levels of detail, but at a smaller portion of your model at one time. Conversely, lower values give you access to more of the model, but don't allow you to sculpt the finest possible details.
Sculpt HD: This button is normally activated using the a hotkey. When activated with the hotkey, it selects an area of your model around the current mouse position for high-definition sculpting. This area is determined by the maximum number of polygons that can fit into your computer's memory at any time (set in Preferences, and by the actual number of polygons that need to be displayed as set by SculptHD Subdiv above.
If you press this button with the mouse, your model will be rendered with all HD sculpted details shown, but the HD sculpt mode will not actually be turned on.
RadialRgn: If on, then a circular region will be shown around the mouse when a is pressed; if off, a square region will be shown. They will both contain the same number of polygons, so will have different widths and heights. Use whichever is most suitable for your needs.
To Learn About Rendering HD Geometry Click Here.
To Learn About HD Geometry Click Here.
