Set a background image for only one of the two cameras in a separate Viewport

Questions
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1

Hello!
Is there a way to make the background image for only one of the two cameras (Orthographic and Perspective) used in a separate Viewport? In this case, the project uses one scene. Or is it possible to set the background image for the selected layer only?

2

When you render with more than one cameras, you also have multiple render calls. Have you tried to dynamically define the background in the render loop? Something like:

renderer.clear();

scene.background = texture;
renderer.setViewport( 0, 0, window.innerWidth/ 2, window.innerHeight);
renderer.render( scene, camera1 );

scene.background = null;
renderer.setViewport( window.innerWidth/ 2, 0, window.innerWidth/ 2, window.innerHeight);
renderer.render( scene, camera2 );
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