1. Introduction to Massive Model Visualization Patrick Cozzi Analytical Graphics, Inc.

6. Computer Graphics Background CPU GPU Monitor Vertex Processing Geometry Processing Fragment Processing PCIe Bus Color Depth Stencil

8. Example Massive Models Procedurally generated model of Pompeii: ~1.4 billion polygons. Image from [Mueller06]

9. Example Massive Models Boeing 777 model: ~350 million polygons. Image from http://graphics.cs.uni-sb.de/MassiveRT/boeing777.html

10. Example Massive Models

15. View Frustum Culling 0 1 2 3 4 5 0 1 3 4 2 5

16. View Frustum Culling 0 1 2 3 4 5 0 1 3 4 2 5

23. Is Culling Enough?

24. Is Culling Enough?

28. Discrete LOD Not enough detail up close Too much detail in the distance

29. Continuous LOD edge collapse vertex split Image from [Luebke01]

32. Hierarchical LOD visit(node) { if (computeSSE(node) < pixel tolerance) { render(node); } else { foreach (child in node.children) visit(child); } } Node Refinement

33. Hierarchical LOD

34. Hierarchical LOD

38. Out-of-Core HLOD visit(node) { if ((computeSSE(node) < pixel tolerance) || (not all children resident)) { render(node); foreach (child in node.children) requestResidency(child); } else { foreach (child in node.children) visit(child); } }