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manual/compositing/properties.rst

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Properties Properties
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Header The Sidebar can be shown by pressing the hotkey :kbd:`N` or by using the menu :menuselection:'View --> Sidebar'. It is located at the right-hand side of the Compositor window. There are at least four tabs: Item, Tool, View, and Options. Sometimes, there are additional tabs from installed addons.
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.. figure:: /images/compositing_properties_header.png Item
====
Compositing specific options. .. admonition:: Reference
:class: refbox
Use Nodes :Panel: :menuselection:`Sidebar region --> Item`
Enables basic compositing set up with a :doc:`Render Layer Node </compositing/types/input/render_layers>`
and a :doc:`Composite Node </compositing/types/output/composite>`.
Backdrop
Enables the use of a backdrop using a :doc:`Viewer Node </compositing/types/output/viewer>`.
Backdrop Channels .. figure:: /images/compositing_properties_item.png
See below. :align: right
Sidebar with Render Layers node and Item tab selected.
Backdrop Node
======== Sets the name, label and color of the node. The label is shown in the title bar of the node. *Color* sets the background color of the node. It's good practice to label and color group nodes.
Properties
The properties that are shown depend on the type of node selected, e.g. a Mix node has different
properties than a Mask node.
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Tool
====
.. admonition:: Reference .. admonition:: Reference
:class: refbox :class: refbox
:Panel: :menuselection:`Sidebar region --> View --> Backdrop` :Panel: :menuselection:`Sidebar region --> Tool`
.. figure:: /images/compositing_properties_backdrop.png .. figure:: /images/compositing_properties_tool.png
:align: right :align: right
Backdrop options. Sidebar with the Tool tab selected.
Active Tool
The exact info in this panel changes with the selected tool in the Toolbar (located on the left side of the editor area).
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.. clear
View
====
.. admonition:: Reference
:class: refbox
:Panel: :menuselection:`Sidebar region --> View`
.. figure:: /images/compositing_properties_view.png
:align: right
Sidebar with the Tool tab selected.
Backdrop
The backdrop is a preview of the output of a node, For example,
:kbd:`Ctrl-Alt-LMB` on an Image node, will show the preview of the image.
:kbd:`Ctrl-Alt-LMB` on a Mix node, will show the result of the mixing.
You can toggle the backdrop by clicking on the Backdrop Button in the Header
or by clicking the checkbox next to *Backdrop* in the View panel.
Backdrop Channels Backdrop Channels
Set the image to be displayed with *Color*, *Color and Alpha*, or just *Alpha*. Set the backdrop image to be displayed with *Color*, *Color and Alpha*, or just *Alpha*. You can also select the Color Channels *Red*, *Green* or *Blue*. The most realistic preview comes from *Color and Alpha*. With *Color* only the transparent regions of the image are removed and replaced with a black color. If you select *Alpha*, the transparent area is shown in black and the pixels with color info are displayed in white. Selecting the *Red*, *Green* or *Blue* channel will display a gray scale image. The intensity of the selected color will be shown as a shade of gray. Darker gray signifies less color available of the one that is selected. For example -if the Red channel is selected- a red rose against a blue sky will be shown as a white outline of the rose against a black sky.
Zoom Zoom
Sets how big the backdrop image is. Sets how big the backdrop image is. The value cannot be smaller than 0.01.
The max value has no limit.
Offset Offset
Change the screen space position of the backdrop, Change the screen space position of the backdrop, or click the *Move* button, or shortcut :kbd:`Alt-MMB` to manually move it.
or click the *Move* button, or shortcut :kbd:`Alt-MMB` to manually move it.
Fit Fit
Automatically scales the backdrop to fit the size of the editor. Automatically scales the backdrop to fit the size of the compositor editor.
Reset Backdrop
Switches back to the default values of Zoom (1) and Offset (0).
Annotations
You can select the Annotate tool in the Toolbar (press :kbd:`T` to show the toolbar) to make some annotations in the Compositor window. See :doc:`Annotate Tool </interface/annotate_tool>` for more info.
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Performance .. clear
Options
=========== ===========
.. admonition:: Reference .. admonition:: Reference
:class: refbox :class: refbox
:Panel: :menuselection:`Sidebar region --> Options --> Performance` :Panel: :menuselection:`Sidebar region --> Options`
.. figure:: /images/compositing_properties_performance.png .. figure:: /images/compositing_properties_options.png
:align: right :align: right
Performance settings. Performance settings.
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This panel help you to tweak the performance of the Compositor. This panel help you to tweak the performance of the Compositor.
Render Render
Sets the quality when doing the final render. Sets the quality when doing the final render. Can be high, medium or low.
Edit Edit
Sets the quality when making edits. Sets the quality when making edits. Can be high, medium or low.
AlaskaUnsubmitted
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I would personally get rid of the "Can be high, medium or low" part. The user of Blender can already see these options by clicking on the drop down and the manuals writing guide says "Avoid including specific details".

But you may want to wait to hear feedback from @Aaron Carlisle (Blendify)

Alaska: I would personally get rid of the "Can be high, medium or low" part. The user of Blender can…
Chunk Size Chunk Size
Max size of a tile (smaller values give a better distribution of multiple threads, but more overhead). Max size of a tile (smaller values give a better distribution of multiple threads, but more overhead).
OpenCL OpenCL
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Two Pass Two Pass
Use two pass execution during editing: the first pass calculates fast nodes, the second pass calculates all nodes. Use two pass execution during editing: the first pass calculates fast nodes, the second pass calculates all nodes.
Viewer Border Viewer Border
This allows to set an area of interest for the backdrop and preview. This allows to set an area of interest for the backdrop.
The region is started by :kbd:`Ctrl-B` and finished by selection of a rectangular area. Press :kbd:`Ctrl-B` and select a rectangular area in the preview.
This area will become your next preview in the backdrop.
:kbd:`Ctrl-Alt-B` discards the region back to a full preview. :kbd:`Ctrl-Alt-B` discards the region back to a full preview.
This is only a preview option, final compositing during a render ignores this region. This is only a preview option, final compositing during a render ignores this region.
Auto Render Auto Render
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