OllieBrown

Advanced Lighting & Shading

Archives for: August 2009, 04

2009-08-04

Permalink 04:21:39 pm, by Olliebrown Email , 126 words, 5122 views   English (US)
Categories: GSoC 2009, Code Progress

Gentlemen, to evil

I think we've got it. I did some playing around with the different sampling parameters and after some scaling and few bug fixes to make sure the energy stayed consistent no matter the number of photons and now we're getting some good results. Here's the latest light map for the Cornell Box:

Raw lightmaps for the Cornell Box (1M photons, 1000 samples)
This light map contains only photon mapped light. It was generated with 1M photons and 1000 samples per element. While the image is still too noisy we are seeing all the desirable lighting effects and the overall impression is much closer to the desired result.

Here's a table of many different photon counts (y axis) and sampling amounts (x axis) (click on any image for a full size view):

10
100
1,000
1K 1K photons, 10 samples per element 1K photons, 100 samples per element
N/A
10K 10K photons, 10 samples per element 10K photons, 100 samples per element 10K photons, 1K samples per element
100K 100K photons, 10 samples per element 100K photons, 100 samples per element 100K photons, 1K samples per element
1M 1M photons, 10 samples per element 1M photons, 100 samples per element 1M photons, 1K samples per element
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OllieBrown

Info about progress on my Google Summer of Code 2009 project on Advanced Lighting & Shading in CrystalSpace.

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