This page shows SBRDF results and any other content people would like to share. Feel free to send stuff to be posted or to link to.

Here are a few images and videos of recently improved renderings of measured SBRDFs by Dave McAllister. These were rendered in real-time on a GeForce 6800. This get about 30 fps in a 640x480 window with 8X AA. Jared McAllister modelled the pillows.

Notice especially the subtle shifts in the color of the white fabric as it rotates, and how the background threads behave very differently than the foreground threads. All surfaces in the scene have the same SBRDF shader applied, and all are illuminated by the same lights. The different appearance between the wood and the two kinds of fabric is what SBRDFs are all about.

Pillows with Point Light Illumination

• Click here for an MPEG4 video. [2.8 MB]
• Click here for a DivX video. [2.3 MB]

Pillows with Environment Map Illumination

• Click here for an MPEG4 video. [5.0 MB]
• Click here for a DivX video. [5.7 MB]

This video shows spatially varying direction of anisotropy and prefiltered environment maps. It was rendered two years ago. I've improved things a little since then. This one also gets about 30 fps in a 640x480 window with 8X AA.

• Click here for an AVI video. [13 MB]

Ben Cloward modelled the lobby of the Carolina Inn and we made several surfaces in the scene be SBRDFs. We acquired HDR environment maps from the real lobby. These are used to light the scene. Some images use point or directional lights, while others use the environment map. The environment map was preconvolved with Phong lobes of various sharpnesses. The shader indexes from the appropriate maps at each pixel. This allows the fabrics, the wood, plant leaves, etc. to all be illuminated by the same environment map. The Carolina Inn demo also gets about 30 fps in a 1280x960 window with 4X AA.