Support for COPernicus Houdini Digital Assets was added to the Houdini 21.0 plugin.
Digital Assets created directly for COP nodes are supported by the plugin, and work in a similar way than SOP/OBJ digital assets would. The COP node’s inputs will be available as inputs on the HDA, and node path parameters exposed on the HDA will be available as parameter inputs.
Since COPernicus assets only output textures, we recommend that you use them with the Asset Editor. However, if placed in the world, a preview quad will be generated to allow you to visualize their texture outputs in the world.
When opening a COP HDA in the asset editor, or any HDA that only output textures - the Asset editor will automatically switch to a 2D viewport. In this 2D mode, you can use the RGBA channel toggles on top of the viewport to filter individual channels of the generated image. If multiple outputs are generated, a combobox will be available next to the channel toggles to allow you to select which texture output is displayed in the viewport.