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Fast and Precise UV Packing with UVPackMaster Pro
UVPackMaster Pro is an advanced UV packing and stacking tool for Maya. It can pack thousands of UV islands in seconds using CPU processing and CUDA GPU acceleration. The tool helps artists organize UV layouts, improve UV space coverage, and control how individual islands and groups are packed.
Fast UV Packing with CPU and GPU Acceleration
UVPackMaster Pro is designed to handle large UV layouts with thousands of islands. It supports CPU processing and CUDA GPU acceleration to complete packing operations faster.
The tool can also use the CPU and all available GPUs at the same time. GPU packing is available on Windows and Linux.
For complex UV layouts, this processing system helps manage a large number of islands without requiring separate packing operations.
Advanced UDIM Packing and UV Groups
UVPackMaster Pro provides detailed control over UDIM workflows. You can divide UV islands into any number of named groups and pack them all with a single operation.
Each group can have its own settings, including:
Target UV Boxes: Choose specific UV areas for each group.
Relative Texel Density: Control the texel density of different groups.
Packing Order: Decide which groups are packed first and allow groups to overlap when needed.
Group Positioning: Manage target boxes directly in the UV editor.
The tool can also pack multiple UV groups into a single tile. It automatically calculates suitable sub-boxes for each group.
You can pack a single UV map across multiple tiles or place islands from the same group close together in a shared UV space.
Automatic Texel Density and Island Scaling
UVPackMaster Pro can automatically assign texel density to individual islands before packing.
It also supports texel density tiers, which let you quickly change density settings across different islands.
For more control, you can assign scale multipliers to specific UV islands. These multipliers determine how much each island is scaled during packing.
The packing search can also adjust relative island scales to improve UV space coverage.
UV Stacking and Island Alignment
UVPackMaster Pro works as both a packing tool and an advanced UV stacking system.
It can automatically align and stack similar UV islands, even when their vertex positions are slightly different.
Its stacking features include:
Vertex Position Correction: Adjust vertex positions for better matching between stacked islands.
Automatic Scale Adjustment: Match the scale of islands during stacking.
3D Orientation Awareness: Consider the islands' orientation in 3D space.
Island Priority: Control which islands receive priority during stacking.
You can also create stack groups. Islands assigned to these groups are automatically stacked before packing and remain together during the operation.
Lock Groups and Preserve UV Positions
Some UV layouts require islands to keep their relative positions. UVPackMaster Pro provides several ways to protect these relationships.
Lock Stacked Islands: Keep stacked islands together so they are not separated during packing.
Numbered Lock Groups: Assign islands to specific groups and preserve their relative positions while packing.
Transformation Tracking: Make selected islands follow the transformations of other islands during packing.
These controls are helpful when a UV layout contains islands that must maintain a specific arrangement.
Improve UV Coverage with Heuristic Search
UVPackMaster Pro includes a heuristic search system that tests different packing arrangements to find layouts with higher UV space coverage.
The search can run on the CPU and available GPUs simultaneously.
In the provided example, a single packing iteration reaches 78% UV coverage. After one second of searching, the coverage increases to 85%.
The tool can also mix relative island scales during the search to find denser arrangements.
Rotation, Padding, and Pixel Alignment
UVPackMaster Pro provides precise controls for island rotation and spacing.
Automatic UV Orientation: Orient UV islands based on their direction in 3D space.
Per-Island Rotation: Set a specific rotation step angle for individual islands.
Rotation Locking: Set the rotation step angle to zero to prevent selected islands from rotating.
Pixel Margin and Padding: Define exact pixel-based spacing during packing.
Pixel-Perfect Alignment: Align UV islands precisely to the pixel grid.
These settings give artists control over the final UV layout, especially when exact positioning and spacing are important.
Add New Islands to Existing UV Layouts
UVPackMaster Pro can add new UV islands to an existing packing arrangement.
The tool searches for a suitable scale to fit the additional islands into the available UV space.
This feature supports workflows where a UV layout needs to be expanded without creating a completely new arrangement.
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