Open Source Real Time SSS Shader

 

Jorge Jimenez

These last months I’ve learned a very important lesson: efforts towards rendering ultra realistic skin are futile if they are not coupled with HDR, high quality bloom, depth of field, film grain, tone mapping, ultra high quality models, parametrization maps, high quality shadow maps (which are lacking on my demo) and a high quality antialiasing solution. If you fail on any of them, the illusion of looking at a real human will be broken. Specially on close-ups at 1080p, that is where the real skin rendering challenge is.

As some subtleties (like the film grain) are lost on the online version, I encourage to download the original blu-ray quality version below, to better appreciate the details and effects rendered (but be aware that you will need a powerful computer to play it). Please note that everything is rendered in real-time; in fact, you can also download a precompiled version of the demo (see below), which shows the shot sequence of the movie, from its beginning to its ending. The whole demo runs between 80 and 160 FPS, with an average of 112.5 FPS on my GeForce GTX 580. But it can be run in weaker configurations by using more modest settings.

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