Commenting on: OpenCL path tracer / ray tracing demo using the AMD OpenCL Beta SDK

SmallptGPU  is a small and simple Path Tracer demo written in OpenCL in order to test the performance of this new standard. Path tracing is essentially a form of ray tracing whereby each ray is recursively traced along a path until it reaches a light emitting source where the light contribution along the path is calculated. This recursive tracing helps for solving the lighting equation more accurately than conventional ray tracing (definition courtesy of Wikipedia).

SmallptGPU was originally written for Linux using the ATI OpenCL SDK beta4.  But there are now Windows 32 & 64 bit builds…