Scanline Interleaved Stereo

Scanline interleaved stereo, also referred to as line blanking stereo works by interleaving the left and right eye views every other scanline in the display window. The stereo hardware then decodes the interlaced signal and either separates them into two separate displays or blanks the even or odd scanlines to display only the left or right eye image at the same time that shutter glasses are polarized in the appropriate way. This mode works well with the Eye3D glasses and similar stereo hardware. This stereo mode is nice because the only special requirements for the graphics accelerator are that it provide a stencil buffer which is used to generate the alternating scanlines in the final image.