http://www.realtimerendering.com/blog/rendering-equation-in-wired/ Tracking the latest developments in interactive rendering techniques Mon, 17 Jun 2013 03:17:13 +0000 hourly 1 http://wordpress.org/?v=3.4.1 http://www.realtimerendering.com/blog/rendering-equation-in-wired/comment-page-1/#comment-1728 morgan3d Thu, 02 Sep 2010 03:40:04 +0000 http://www.realtimerendering.com/blog/?p=1701#comment-1728 They made an error in the units, probably in an effort to eliminate the outgoing direction parameter for simplicity. By using Watts instead of Watts/(m^2 sr), they have to assume that the incident radiance is invariant with respect to direction. In that case you don't need the integral. In fact, you probably don't need the equation--that's only going to work if the whole scene has constant lighting. Maybe that models something like the inside of a Lambertian white sphere? They made an error in the units, probably in an effort to eliminate the outgoing direction parameter for simplicity. By using Watts instead of Watts/(m^2 sr), they have to assume that the incident radiance is invariant with respect to direction. In that case you don’t need the integral. In fact, you probably don’t need the equation–that’s only going to work if the whole scene has constant lighting. Maybe that models something like the inside of a Lambertian white sphere?

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