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The Bounced Z -Buffer for Indirect Visibility Oliver Nalbach 1 Tobias Ritschel 1,2 Hans-Peter Seidel 1 21.

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Presentation on theme: "The Bounced Z -Buffer for Indirect Visibility Oliver Nalbach 1 Tobias Ritschel 1,2 Hans-Peter Seidel 1 21."— Presentation transcript:

1 The Bounced Z -Buffer for Indirect Visibility Oliver Nalbach 1 Tobias Ritschel 1,2 Hans-Peter Seidel 1 21

2 Visibility ? 10/08/152

3 Z -Buffer FramebufferScene Camera 10/08/153

4 Z -Buffer 8 8 8 10/08/154

5 Z -Buffer 10/08/155 6 5 4 3 8 8 8

6 Z -Buffer 8 8 6 5 4 3 10/08/156

7 Z -Buffer 8 8 6 5 4 3 8 7 10/08/157

8 Indirect Visibility 10/08/158 BRDFVisibilityCosineEmission

9 Gathering vs. Scattering 10/08/159 GatheringScattering

10 Ambient Occlusion Volumes (AOV) [McGuire 2010] ProxiesResult 10/08/1510

11 Lack of Indirect Visibility: AOV [McGuire 2010] AOV Ray tracing 10/08/1511

12 Deep Screen Space (DSS) 1/1 1/16 1/4 SceneSurfel cloudHierarchical splatting 10/08/1512

13 Lack of Indirect Visibility: DSS DSSRay tracing 10/08/1513

14 Bounced Z -Buffer Setup (Diffuse) 10/08/1514

15 Bounced Z -Buffer Setup (Specular) 10/08/1515

16 Bounced Z -Buffer Setup in Action RGB z 10/08/1516

17 Bounced Z -Buffer Setup in Action RGB z 10/08/1517

18 Bounced Z -Buffer Setup in Action RGB z 10/08/1518

19 Bounced Z -Buffer Setup in Action RGB z Splat 10/08/1519

20 Bounced Z -Buffer Setup in Action RGB z Splat 10/08/1520

21 Bounced Z -Buffer Setup in Action RGB z Splat 10/08/1521

22 Bounced Z -Buffer Setup in Action RGB z 81 Splat 10/08/1522

23 Bounced Z -Buffer Setup in Action RGB z 8181 Splat 10/08/1523

24 Bounced Z -Buffer Setup in Action RGB z 818114 Splat 10/08/1524

25 Bounced Z -Buffer Setup in Action RGB z 8181148114 Splat 10/08/1525

26 Bounced Z -Buffer Setup in Action RGB z 8181148112 Splat 10/08/1526

27 Bounced Z -Buffer for Deep Screen Space DSSDSS + Z -Buffer (4 spp) Ray tracing 10/08/1527

28 The Catch Increased variance One more correct sample instead of several imprecise ones Need more samples per pixel – Super sampling – Multiple passes 10/08/1528

29 Thank you. Project homepage http://tiny.cc/bounced Acknowledgements Morgan McGuire, Oskar Elek, Karol Myszkowski and Bernhard Reinert 10/08/1529

30 10/08/1530

31 Unfiltered vs. Blurred Results 10/08/1531 UnfilteredGeometry-aware blurring

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