Search found 7 matches

by danielthompson
Fri Dec 02, 2016 4:31 pm
Forum: Links & Papers
Topic: Physically Based Rendering 3E
Replies: 2
Views: 15605

Re: Physically Based Rendering 3E

Thanks Matt! Received it last week. Now if only my wife and the baby will let me spend time with it :)
by danielthompson
Thu Jul 14, 2016 4:47 pm
Forum: Links & Papers
Topic: Physically Based Rendering 3E
Replies: 2
Views: 15605

Physically Based Rendering 3E

Sorry if this has already been asked and answered - does anyone have any insight on the book's release date changing? When I pre-ordered it on Amazon some months ago, the page said July 1 or similar; now it says November 1.
by danielthompson
Thu Jul 14, 2016 4:41 pm
Forum: Visuals
Topic: Glitch Pictures anyone?
Replies: 75
Views: 79618

Re: Glitch Pictures anyone?

Sphere + affine transformations = fail

10994455_670364286407562_4875625012403618091_o.png
10994455_670364286407562_4875625012403618091_o.png (691.58 KiB) Viewed 11619 times
by danielthompson
Fri Sep 25, 2015 9:44 pm
Forum: My First...
Topic: BDPT implementation issues
Replies: 4
Views: 4647

Re: BDPT implementation issues

Though keep in mind that the pdfs you need to evaluate do not necessarily directly correspond to the physical properties of the materials and light sources. That is, the light source may not radiate uniformly but you may still choose to sample a point on it uniformly (for simplicity of implementati...
by danielthompson
Fri Sep 18, 2015 10:38 pm
Forum: My First...
Topic: BDPT implementation issues
Replies: 4
Views: 4647

Re: BDPT implementation issues

OK, thanks for the clarification. If this were a real scene then, with one sphere light and two cuboids (each with perfect Lambert BRDF), the probabilities should work out to be: p0L = 1 p1L = pdf of point on light source. Assuming the light source is a sphere with radius r and it radiates uniformly...
by danielthompson
Sun Sep 13, 2015 10:55 pm
Forum: My First...
Topic: BDPT implementation issues
Replies: 4
Views: 4647

BDPT implementation issues

After implementing a path tracer, I'm now working on implementing bidirectional path tracing. I've been working my way through Veach's thesis and PBRT, and I have a few questions about how vertex probabilities are calculated. Hoping someone here can point me in the right direction. The following ima...
by danielthompson
Sat Sep 12, 2015 8:44 pm
Forum: Visuals
Topic: Glitch Pictures anyone?
Replies: 75
Views: 79618

Re: Glitch Pictures anyone?

One of my first path tracing renders:

trace000000.png
trace000000.png (7.3 KiB) Viewed 16612 times


Fail.

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