Tracer now using correct number of rays when anti-aliasing is off.
Tracer now using correct number of rays when anti-aliasing is off.

The incorrect calculation had two side effects:
  1. More rays than specified were shot per pixel.
  2. Progress quickly reached 100% even though tracing was not finished.

asplendidday/ptchan,asplendidday/ptchan,asplendidday/ptchan