I have some robots running in my game scene. Now I want to switch the camera to the robot's first person view and show it in a small window on the side on top of the existing scene. I have tried using multiple renderers. I have been looking everywhere for it but so far quite unsuccessful.
P.S. For some reason renderer.setViewPort(0,0,15,20)
doesn't seem to be working.
Found the fiddle to answer my question: https://jsfiddle.net/qwb39spx/
//inset scene
renderer.clearDepth(); // important!
renderer.setScissorTest(true);
renderer.setScissor(20, 20, insetWidth, insetHeight);
renderer.setViewport(20, 20, insetWidth, insetHeight);
renderer.setClearColor( 0x222222, 1 );
camera2.position.copy(camera.position.clone().normalize().multiplyScalar(distance));
camera2.quaternion.copy(camera.quaternion);
renderer.render(scene, camera2);