Vizard 7 » Reference » Stereo & Displays » Stereo Modes » Interlaced
7.6
Vizard supports three interlaced stereo modes: vertical, horizontal, and checkerboard. In vertical and horizontal interlace modes each eye is rendered on every other vertical and horizontal line, respectively. Checkerboard stereo renders each eye on every other pixel.
Use one of these modes if you have a stereoscopic device that accepts a single input for both the left and right eye channels AND the device expects that every frame contains both the left and right eye images separated in one of the ways mentioned above.
These modes are similar to the frame parallel mode in that both the left and right eye channels are generated and presented simultaneously. Instead of the two channels being routed to the display device via independent connections, a single output port is used and the separate images are coded by using alternating lines or pixels. The advantage of these techniques is that they maintain high temporal frame rates. The main disadvantage is that you are sacrificing resolution of your images. For example, take a display set to a 1280x1024 pixel resolution. Using vertical interlace mode each eye receives images that are 640*1024 pixels, 50% of the horizontal resolution. Stereoscopic resolution is little affected as it is perceived through horizontal disparity, but it will noticeably affect the overall quality of the graphics.
The following examples illustrate how to initiate the various interlaced modes: