Submitted by , posted on 05 April 2005

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Steep Parallax Mapping is a straightforward change to a pixel shader that allows a game to render existing parallax maps with increased detail. The new effects possible include 1-pass fur and grass, bumps with vertical edges, bump self-shadowing, and a general correction to the texture-swim problems of parallax mapping.

The left image shows a flat wall with all detail rendered via Steep Parallax Map. The image is rendered at 1024x768 with 4x FSAA at 30fps on GeForce6800. The right image shows fur rendered using the method at the same frame rate.

Details, images, and a discussion of similar methods recently proposed are posted on our website,

Morgan McGuire and Max McGuire (Iron Lore Entertainment)

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