Painting Outside Uv Space: Substance Painter Tricks

how to paint outside the uv space substance painter

Painting outside of the default UV space in Substance 3D Painter can be challenging due to the application's primary focus on 3D space. The default setting of the paintbrush aims for seamlessness across UVs, which can lead to unexpected results when working in the 2D view. To overcome this, users can employ quick masks and the polygon tool to precisely select specific UV shells for painting without impacting neighbouring surfaces. Additionally, adjusting the Alignment setting in the tool parameters can prevent bleeding onto other UV islands when painting in 2D. While Substance Painter is mesh-centric and limited to the 0-1 UV space, Substance Designer offers more flexibility for tilling textures outside this range.

Characteristics Values
Default behavior of the paint tool May seem counter-intuitive in some specific situations
Default setting of the paint brush Tries to be seamless across UVs when painting
How to avoid bleeding on other UV islands when painting in the 2D view Change the Alignment setting in the tool parameters
How to paint precisely on certain UV shells Use quick masks
How to select UV shells individually and apply a material Use the polygon tool
Range of UV space that can be painted Between 0 and 1

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Use the polygon tool to select UV shells individually

When painting in Substance Painter, you may encounter situations where your brush strokes extend beyond the intended UV shell, causing unwanted paint on neighbouring shells. This occurs because Substance Painter primarily works in 3D space, and the default setting of the paintbrush is to create seamless strokes across UVs.

To address this issue and ensure precise painting on specific UV shells, you can utilise the Polygon Tool. This tool allows you to select UV shells individually and isolate them for painting. Here's a step-by-step guide on how to use the Polygon Tool effectively:

  • Separate UV Shells: Begin by ensuring that your UV shells are separated in the 2D viewport. This separation allows you to select and work on each shell individually without affecting the others.
  • Access the Polygon Tool: Locate the Polygon Tool within the Substance Painter interface. In the default setup, the Polygon Tool is the fourth icon from the top on the left side of the screen.
  • Select UV Shells Individually: Using the Polygon Tool, carefully select the UV shells you want to work on. You can click on individual polygons or click and drag to select multiple polygons within a shell. This selection process ensures that you only apply paint to the chosen areas.
  • Apply Materials: Once you have made your selections, you can proceed to apply materials to the selected UV shells. This step involves choosing the desired colours, textures, or effects you want to paint onto the selected areas.
  • Adjust Tool Parameters: To prevent paint from "bleeding" onto other UV islands, adjust the tool parameters before painting. Specifically, change the Alignment setting to avoid unintended paint strokes on neighbouring shells.
  • Paint Within Selected Areas: With your materials chosen and tool parameters set, you can now confidently paint within the selected UV shells. The Polygon Tool ensures that your brush strokes remain within the defined areas, preventing accidental paint on other shells.
  • Combine and Switch Modes: Substance Painter offers different fill modes, such as Triangle Fill, Mesh Fill, and UV Chunk Fill, which can be combined and switched. Experiment with these modes to find the best combination for your specific painting needs.

By following these steps and utilising the Polygon Tool effectively, you can precisely select and paint on individual UV shells in Substance Painter. This technique ensures that your paint strokes remain within the selected areas, providing you with greater control and accuracy during the texturing process.

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Change the Alignment setting to avoid bleeding on other UV islands

When painting in Substance Painter, you may encounter an issue where the paint bleeds onto other UV islands, even if they are not touching. This occurs because the default setting of the paintbrush in Substance Painter is designed to create a seamless effect across UVs. As a result, when painting in the 2D view, the paint may bleed onto neighbouring UV shells, leading to unexpected results.

To address this issue and prevent paint from bleeding onto other UV islands, you can adjust the Alignment setting within the tool parameters. By changing the Alignment setting, you can control the behaviour of the paintbrush and restrict the paint application to the desired UV shell. This setting is particularly useful when working in the 2D view, as it allows for more precise and controlled painting without affecting adjacent UV islands.

It's important to separate your UV shells in the 2D viewport before attempting to paint on a single shell. This can be achieved by using the polygon tool to select individual UV shells and apply materials accordingly. Additionally, you can utilise the power of masks, specifically the polygon fill tool, to further refine your selection and ensure that the paint only affects the intended areas.

While the Alignment setting helps prevent paint from bleeding onto other UV islands, it's worth noting that it may not completely solve the issue. In some cases, you might still experience paint bleeding, especially when moving your brush across the map. However, the Alignment setting significantly reduces the likelihood of paint bleeding and provides better control over your painting process within Substance Painter.

Remember to refer to official documentation or seek guidance from experienced users in communities dedicated to Substance Painter if you encounter any further challenges or require additional tips and tricks for painting within the UV space.

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Use the power of the mask to avoid painting outside the UV space

When painting in the 2D view in Substance 3D Painter, you may encounter unexpected results due to the default setting of the paintbrush, which tries to create a seamless look across UVs. This can cause bleeding onto other UV islands. To avoid this issue and ensure you only paint on one UV shell without affecting another, there are a few methods you can use.

One solution is to change the Alignment setting in the tool parameters. This will prevent bleeding onto other UV islands. Additionally, if your UV shells are separated in the 2D viewport, you can utilise the polygon tool to select and apply materials to specific shells.

Another powerful technique is to harness the capabilities of masks. By using quick masks, you can precisely paint on certain UV shells while avoiding any accidental strokes outside the selected shells. Masks in Substance 3D Painter function as intensity parameters, influencing the content of the layers. They always appear in grayscale, converting any painted colours to their corresponding grayscale values. To add a mask, you can either use the right-click menu or the dedicated button. Visualising the mask can be achieved by pressing ALT + Left Mouse Click on its thumbnail, providing an isolated view of the mask in the viewport. Alternatively, you can access this view through the viewer settings.

Smart masks offer additional flexibility, allowing you to save a mask along with its effect for easy reuse across different layers or projects. Creating a smart mask is as simple as right-clicking over an existing mask and choosing the "Create smart mask" option. When applying a smart mask to a layer, it will either create a black mask if none exists or merge the effects with an existing mask. To completely overwrite the effect list, simply hold down the "CTRL" key while dropping the smart mask.

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Stick to the 0-1 UV space to avoid display issues

When using Substance 3D Painter, it is important to stick to the 0-1 UV space to avoid display issues. This is because Substance Painter is an application that primarily works in 3D space, and this extends to its painting functionality as well. The default setting of the paintbrush is to create a seamless finish across UVs. This means that when painting in the 2D view, some unexpected results may occur.

For example, if you have a mesh that tiles outside the 0-1 UV space, Substance Painter will not display the material correctly. This is a known issue with the software, and it is recommended to use Substance Designer in such cases, as it is more focused on tiling textures. However, if you wish to stick to Substance Painter, there are a few workarounds to consider.

Firstly, ensure that your UV values are within the 0-1 range. You can do this by running a VEX over all UV data to store min/max values, and then scaling the UV values accordingly. This will bring all UV values within the 0-1 space. Additionally, when painting in the 2D view, you can avoid bleeding on other UV islands by changing the Alignment setting in the tool parameters. This will prevent the paint from extending beyond the selected UV shell.

By following these steps and sticking to the 0-1 UV space, you can avoid display issues and achieve the desired results in Substance Painter.

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Use Substance Designer for meshes that tile outside the 0-1 area

To use Substance Designer for meshes that tile outside the 0-1 area, you can follow these steps and considerations:

Firstly, understand the default behaviour of the Paint tool in Substance 3D Painter. The default setting of the paintbrush is to create a seamless effect across UVs when painting. This can lead to unexpected results when working in the 2D view, such as "bleeding" onto other UV islands.

To prevent this, you can adjust the tool parameters by changing the Alignment setting. This will ensure that your painting stays within the desired UV shell and does not bleed onto neighbouring surfaces. Additionally, you can use the Polygon Fill tool to select specific polygons or areas you want to paint on. This allows for precise painting on certain UV shells, guaranteeing that you won't make accidental strokes outside the selected shells.

Another technique is to utilise quick masks. Quick masks enable you to paint precisely on specific UV shells without affecting others. This adds an extra layer of control and precision to your workflow.

Furthermore, when working with meshes that tile outside the 0-1 area, you can take advantage of the "Make It Tile" feature in Substance 3D Sampler. This feature helps create seamless tiling by overlaying multiple copies of the material. You can adjust parameters such as Threshold, Smoothness, Contrast, Spots Removal, Color Equalizer, and Height Matching to fine-tune the tiling effect and ensure smooth transitions at the seams.

Additionally, the Tile Generator in Substance Designer offers various parameters to control the tiling of your meshes. You can adjust the Scale, Offset, Rotation, Size, and Opacity of the tiles to achieve the desired pattern and layout. This allows for complex and customisable textures and patterns.

By utilising these tools and techniques, you can effectively use Substance Designer for meshes that tile outside the 0-1 area, ensuring precise and controlled painting within specific UV shells while also creating seamless tiling effects.

Frequently asked questions

It is not possible to paint outside the UV space in Substance Painter. You can only paint between 0 and 1.

To avoid painting on multiple UV shells, you can use the polygon tool to select them individually and apply a material. Alternatively, you can use quick masks to paint precisely on certain UV shells.

To prevent bleeding on other UV islands when painting in the 2D view, change the Alignment setting in the tool parameters.

Some common issues with tiling UVs in Substance Painter include display problems and corrupted faces. These issues may be due to the default settings in the "UV Scale" option or the padding generated outside of the UV islands in the range of 0-1.

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