Sets an offset in a larger frustum. This is useful for multi-window or multi-monitor/multi-machine setups. For example, if you have 3x2 monitors and each monitor is 1920x1080 and the monitors are in grid like this:

+---+---+---+ | A | B | C | +---+---+---+ | D | E | F | +---+---+---+

then for each monitor you would call it like this:

const w = 1920; const h = 1080; const fullWidth = w * 3; const fullHeight = h * 2;

// A camera.setViewOffset( fullWidth, fullHeight, w * 0, h * 0, w, h ); // B camera.setViewOffset( fullWidth, fullHeight, w * 1, h * 0, w, h ); // C camera.setViewOffset( fullWidth, fullHeight, w * 2, h * 0, w, h ); // D camera.setViewOffset( fullWidth, fullHeight, w * 0, h * 1, w, h ); // E camera.setViewOffset( fullWidth, fullHeight, w * 1, h * 1, w, h ); // F camera.setViewOffset( fullWidth, fullHeight, w * 2, h * 1, w, h ); Note there is no reason monitors have to be the same size or in a grid.