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The Channel toolbar button for switching between color, alpha, and depth channels
— Click the Color button in the viewer toolbar to toggle between full RGB color and that image’s alpha channel.
— Click the arrow to the right of the Color button to choose a specific channel to view from the list of available channels in the current image.
— Click the viewer you want to toggle, and press one of the following keyboard shortcuts; C - Full RGB color display
R - Display red channel
G - Display green channel B - Display blue channel A - Display alpha channel
Z - Display Z-buffer channel
Viewing Auxiliary Channels
The viewers support RGBA and Z channels using keyboard shortcuts, but they support other channels as well. File formats such as OpenEXR often include auxiliary image data that provide more control and compositing options when working with rendered 3D images. To view auxiliary image data in a viewer, click the arrow to the right of the RGB button to display the drop-down menu or right-click in the viewer and choose an option from the Channels submenu of the contextual menu.
The 3D Viewer
Building a composite in 3D space has different requirements from traditional 2D compositing. When a node from the 3D category or some particle systems is selected, a 3D Viewer is used to display the scene. The 3D Viewer shows a representation of a composite in a true GPU-accelerated 3D environment.
For more information on 3D controls, see Chapter 85, “3D Compositing Basics,” in the DaVinci Resolve Reference Manual or Chapter 23 in the Fusion Reference Manual.