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Viewport options menu
To open the Display Options, click the button in the display toolbar to the right of the viewport, or move the mouse pointer over the viewport and press D.
USD uses a generic rendering interface called Hydra. As long as a third party viewer or renderer implements the Hydra API, Houdini can use it to render the USD stage in the Solaris view.
By default, you can choose between the native Houdini GL view and the new Karma renderer.
If you have other Hydra delegates (for example, Pixar’s RenderMan and Storm GL delegates) installed where Houdini can find them, they will appear in the viewport options menu.
You need to make sure the render delegate is found by the USD plug-in search, using the
PXR_PLUGINPATH_NAME environment variable.
You can also set the environment variable
PLUG_*, which causes the USD library to print out useful information as it scans for and loads plug-ins.