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

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Presentation transcript:

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

Visibility ? 10/08/152

Z -Buffer FramebufferScene Camera 10/08/153

Z -Buffer /08/154

Z -Buffer 10/08/

Z -Buffer /08/156

Z -Buffer /08/157

Indirect Visibility 10/08/158 BRDFVisibilityCosineEmission

Gathering vs. Scattering 10/08/159 GatheringScattering

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Thank you. Project homepage Acknowledgements Morgan McGuire, Oskar Elek, Karol Myszkowski and Bernhard Reinert 10/08/1529

10/08/1530

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