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# O_InteraxialShifter Controls

### Use GPU

Open the O_InteraxialShifter controls. O_InteraxialShifter renders using the Local GPU specified, if available, rather than the CPU. The GPU may significantly improve processing performance.

If there is no suitable GPU, or the required NVIDIA CUDA drivers are unavailable, O_InteraxialShifter defaults to using the CPU. You can select a different GPU Device, if available, by opening Nuke's Preferences and selecting an alternative card from the GPU Device dropdown.

Note: Selecting a different GPU requires you to restart Nuke before the change takes effect.

### Views to Use

From the views that exist in your project settings, select the two views you want to use to create the new views. These views are mapped for the left and right eye.

### Left Position

Select a position between the views where you want to generate the new left view. The position is expressed as a fraction of the distance between the views.

### Right Position

Select a position between the views where you want to generate the new right view. The position is expressed as a fraction of the distance between the views.

### Edges

#### Output edges to alpha

You can use the Output edges to alpha checkbox to output the edges to the alpha channel. Use the alpha channel as an overlay to determine where the edge correction is applied.

#### Adjust Edges

Use the Adjust Edges slider to change the size of the edge mask. To dilate the mask, use a positive value. You can use a negative value to erode the mask.

#### Feather

You can use the Feather slider to specify how much feathering to apply to the edges. Increasing the Feather value, softens the edges; decreasing the value, sharpens the edges.