How to Increase Polycount in ZBrush?

Increasing polycount in ZBrush is essential for achieving high levels of detail in 3D modeling. Here’s how to effectively increase the polycount, utilize various tools, and manage your workflow for optimal performance.

Understanding Polycount in ZBrush

Polycount refers to the number of polygons that make up a 3D model. A higher polycount allows for greater detail, enabling more intricate features and smoother surfaces. However, managing polycount wisely is crucial, as exceedingly high polycounts can lead to performance issues.

Step 1: Adjusting ZBrush Preferences

1. Open Preferences: Launch ZBrush and navigate to the ‘Preferences’ tab at the top menu.
2. Select Performance: Within Preferences, find and select the ‘Performance’ option.
3. Increase Max Polycount: Look for settings related to max polygon limits. Depending on your system’s capabilities, adjust these settings to allow for more polygons to be handled.

Step 2: Utilizing SubTools

1. Create SubTools: Begin by splitting your model into multiple SubTools. This allows each segment to use its polygon quota. For instance, if your system can efficiently manage 8 million polygons per SubTool, you can combine multiple SubTools for greater detail.
2. Add Details Incrementally: Focus on adding detailed features to each SubTool. This method not only improves detail but also maintains performance.

Step 3: Subdividing Your Model

1. Select the Tool: Choose the model you want to work on from the Tool palette.
2. Subdivide: Press the ‘Divide’ button located in the Geometry menu. Each click will double the number of polygons, allowing you to reach finer details.
3. Monitor Your System: As you subdivide, keep an eye on your system’s performance. If the interface becomes sluggish, consider reducing the subdivisions.

Step 4: Using DynaMesh

1. Activate DynaMesh: On the right sidebar, click the DynaMesh button to activate it. This tool allows you to modify existing shapes freely while maintaining a uniform polygon distribution.
2. Recalculate Topology: After altering the shape, simply click the ‘DynaMesh’ button again. This action will recalculate the topology and optimize the polygon distribution.

Step 5: Retopologizing with ZRemesher

1. Access ZRemesher: Locate ZRemesher under Tool > Geometry.
2. Set Polygon Count: Specify how many polygons you would like your model to have. ZRemesher will automatically create a new topology based on your specifications.
3. Execute Retopology: Click the ZRemesher button to begin the process. This approach is highly effective for cleaning up topology while increasing the effective polygon count.

FAQ

1. What is the maximum number of polygons ZBrush can handle?
ZBrush can theoretically handle millions of polygons, with user performance limits depending on the capabilities of the computer’s hardware. Each SubTool can be limited to around 8 million polygons if your system supports it.

2. How does DynaMesh help increase polycount?
DynaMesh allows you to reshape your model without the restriction of existing topology. When activated, it provides real-time polygon recalculation, enabling you to work creatively while maintaining a uniform polycount distribution.

3. Can I check the current polycount of my model in ZBrush?
Yes, you can view the current polycount through the Tool palette. Select your model, and in the Geometry section, you’ll find information regarding the total number of polygons used in that particular SubTool.