Re:John Carmack's Comment on Hardware Ray Tracing
by raverbashing on Thursday January 24, 2013 @09:21AM
(#5109598)
"These renderers start at the light source and stochastically generate and follow photons."
Yes, that's similar to ray tracing, but going 'backwards'
Rasterizing is certainly faster, requiring more work in the 'intelligence' of scene assembly.
With raytracing (or physics rendering) you have lights, objects 'naturally interacting' with each other so shadows, reflection, radiosity comes ""automatically"" (still hard to do)
With rasterizing you have triangles with different colors, and it's up to you to paint them accordingly.
Yes, that's similar to ray tracing, but going 'backwards'
Rasterizing is certainly faster, requiring more work in the 'intelligence' of scene assembly.
With raytracing (or physics rendering) you have lights, objects 'naturally interacting' with each other so shadows, reflection, radiosity comes ""automatically"" (still hard to do)
With rasterizing you have triangles with different colors, and it's up to you to paint them accordingly.