3d graphics float "benchmarks"

[bearophile]

Replacing "double" with "float" in all  the C/D program the output image is the same, but the timings change:

Timings, seconds:
  Python:     193.6
  Psyco:       49.80
  D2:           6.30
  D3:           4.22
  C2 gcc:       4.06 (float)  
  C gcc:        3.98
  C llvm-gcc:   3.84
  C2 llvm-gcc:  3.73 (float)
  D3b:          3.62 (float)

Using both cores of my CPU the timings probably become half. Someone here may suggest the changes in the code to use 2/4 cores (on Windows) in that code.

Be careful, the GPUAO versions that are supposed to run in 0.01 s with the GPU, may contain a virus.

Bye,
bearophile