Downsample
Updated: 4 Dec 2023
Downsample the resolution of the input image.
Downsample
Method #
This node downsamples the resolution of the input image.
Parameters
These properties control the core behaviours of the node.
Parameter Details Preview In Viewport Preview the generated image as an overlay in the viewport.
- Off : No preview is generated.
- RGBA : Preview the image blended with alpha in the viewport.
- RGB : Preview the colour channels in the viewport.
- Alpha : Preview the alpha channel in the viewport.
- PIP : Preview the image blended with alpha in the viewport, in a smaller picture in picture display, on top of the existing content.
Apply PostFX Before Alpha Image Input (Legacy) When enabled, the alpha input image is applied after the postfx pass, overwriting any effects the postfx would have applied to the alpha channel.
Iterations How many levels of down sampling are generated.
Mode Choose how the downsample output is filtered.
- Filtered : Checks the surrounding 3x3 pixels to downsample based on their average.
- Point Sampled : Only one point is sampled.
- Min Of Sampled : The minimum value of the points sampled is used.
- Max Of Sampled : The maximum value of the points is used.
- Bilinear Filtered : Linear blend is applied between pixels.
Inputs
These properties control the core behaviours of the node.
| Parameter | Details |
|---|---|
| Preview In Viewport | Preview the generated image as an overlay in the viewport.
|
| Apply PostFX Before Alpha Image Input (Legacy) | When enabled, the alpha input image is applied after the postfx pass, overwriting any effects the postfx would have applied to the alpha channel. |
| Iterations | How many levels of down sampling are generated. |
| Mode | Choose how the downsample output is filtered.
|
| Name | Description | Typical Input |
|---|---|---|
| Effect Mask | Mask out areas that Post-FX applied to this node won’t be applied. | Loader |
| Alpha Image | Use a separate video nodes luminance values to overwrite the alpha channel of the image. | Loader |
| Active | Enables or disables the effect. Disabling the effect means it will no longer compute, so disabling a node when not in use can improve performance. | Envelope Modifier |