Specifications

Figure 1.22: Left and right images are fused by your brain to create a single image

To maximize the field of view in the Rift, the images presented to each eye need to mimic

real vision in that more data is presented on the left of the image for the left eye and more

data is presented on the right for the right eye.

RENDERING FOR THE RIFT

To render images properly for the Rift means you need to take into account the LCD display,

how vision works with separate images for each eye, and the lenses used.

The lenses in the Rift distort the image on the screen (as all lenses do), introducing a

fisheye lens effect. That means that images shown on the screen inside the Rift must be

adjusted before they appear, inverting that distortion. That way, when viewed through the

lens, the image distortion and the lens distortion will cancel out and the resulting picture will

look crisp and clear.

As you can see in Figure 1.23, a grid of lines, if simply viewed through the Rift as is, would

appear distorted inwards by the lenses; as though drawn towards the center. This type of

distortion is a called a "pincushion" distortion.

other simple mistakes. These will be cleaned up during production of the book by copyeditors and proofreaders.

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