< User:Vasco.costa
Revision as of 08:47, 2 June 2015 by (talk) (Development Phase)

Community Bonding Period

I have made two patches for OpenCL (OCL) shot code. One patch refactors the existing sph (Sphere) shot code, and the another patch implements ehy (Elliptical Hyperboloid) shot code.

Background Research

Development Phase

Week 1 : 25-31 May

  • Created some example .g files in mged for the primitives to be implemented this week. The Quick Reference Card proved to be quite useful.
  • Do the matrix ops for ehy (Elliptical Hyperboloid) in the OpenCL side.
  • Tried out a bunch of code browsing tools (cscope, LXR, doxygen, etc). The NetBeans IDE seems the most promising.

Week 2 : 1-7 Jun

  • Read code to better understand the main rendering loop. It seems to be something like this:
 do_frame() → do_run() → worker()* → do_pixel()* → rt_shootray()* → rt_*_shot()

The code is recursive (which is problematic for OpenCL). I'll work on a simplified version of the rendering loop which only does the primary rays in C as a first approach. After I get the non-recursive parallel friendly C code I'll work on the OpenCL port.