HanProgressReportSep08

UP

TODO

• PRELOADING

   - preload data: load as much data as possible before starting playing, to fully utilize memory cache.
   - make sure to correctly count the number of bricks that is being loaded at each frame
   - load up to level 2 from level 5
   - make sure the eviction takes place on old frames

• PLUGIN

   - change plugin so that initialization step takes place when "load data" is selected. Now it loads everything when opencover starts

• BUGS

   - it seems there's a bug in generating mesh! find and fix it!! => decided to reimplement view frustum culling, copy from a tutorial..

• THINKABOUT

   - revert to memory pool instead of pixel buffer object pool..
   - * re-add prefetching thread
   - * implement budget based algorithm

• PERFORMANCE

   * measuring performance for the following step
     - LOADING, preload miss
     - # bricks loaded
     - # brick upper bound
     - meshing generation
     - rendering

     - with preloaded data: 40~50 fps, 0.025 ~ 0.02 sec/frame
     - without preloading: around 10 fps, 0.1 sec/frame....:(
   * prefetching next frames
   * point of interest (check paper again)

• multi-volume support

   * mesh generation - generating a mesh for multivolumes under one constraint - memory size
   * rendering - multi-volume rendering
         o new rendering algorithm: need to manage multi bricks overlaps with several bricks! 
   * time-series multivolume rendering - need to handle multi timesteps