36RSO Project progress 1

Last 2 weeks

• studied possible ways of mesh locality optimizations
• implemented own way to generate triangle strips for regular grids (up to 400% higher framerate!)
• compared with nVidia tristrip library (worse results due to the general use of this library)

Next 2 weeks

• study of shading techniques for GPU clipmaps
• revise existing shading and update to valid GPU per-pixel shading using normal maps
• proper normal map update during clipmap shift on GPU
• blend normals near boundary of clipmaps (same way as geometry blending)

36RSO Project assignment

GPU implementation of geometry clipmaps

Student: Václav Kyba kybav1@fel.cvut.cz
Supervisor: Jaroslav Křivánek xkrivanj@fel.cvut.cz

Extend existing geometry clipmap implementation done as a 36SEM project:

• optimize clipmap footprint locality for better vertex cache usage http://research.microsoft.com/~hoppe/tvc.pdf
• compare 3 different ways of shading the terrain - per-vertex (on-the-fly), per-pixel (normal map), blended (combination) http://www.robertwrose.com/cg/terrain/rose-geoclipmaps.pdf (pg.4)
• synthesize fractal detail of finer levels on GPU using appropriate function http://research.microsoft.com/~hoppe/gpugcm.pdf (pg.42) http://research.microsoft.com/~hoppe/geomclipmap.pdf (pg.6) http://wwwcg.in.tum.de/Research/data/Publications/vmv06.pdf
• number of synthesized clipmap levels can vary from 0 (height-map data only) to l-1 (only the coarsest level comes from height-map)

TerraD3D

• school project for 36GS and 36SEM
• C++ Win32 Direct3D application
• terrain LOD algorithm based on geometric clipmaps, mainly on their GPU version
• very effective and promising algorithm for today's graphics hardware
• main aspects described in paper (czech) and presentation (czech)
• binary v1.03 here (~4.5MB)

Buggy 2

• school project for 36ZPG course
• rewritten from scratch but never finished
• quadtree for terrain frustum culling
• logging and simple UI
• source + binary here (~9.2MB)

Buggy

• school project for 36V2B course
• C++ Win32 OpenGL application
• naive algorithm for terrain rendering from height-map
• simple physics, frustum culling and collision detection
• particle system for weather - rain, snow
• source + binary here (~1.1MB)

3D Maze

• school project for 36V1B course
• first 3D attempt - simple Win32 C++ OpenGL application
• go through a maze and find an exit to the next level
• time limited top view for better orientation
• source + binary here (~1.9MB)