Comments on: Google Summer of Code: Faster Ray Tracing

By: _joeri

_joeri — Tue, 25 Aug 2009 13:42:56 +0000

Lets keep it english:

It takes 5% of the previous time?
Its 20x faster.

It takes 90% of the previous time?
Its 1.1x faster.

By: timinteo

timinteo — Fri, 21 Aug 2009 21:40:24 +0000

Their seams to be some confusion over the percentages. To clear things up 100% FASTER would be twice as fast because you have the original 100% plus a additional 100%, 200% Normal Speed = twice as fast (0% increase + original 100% = 100% normal speed). 3000% faster would be 31x (3000% increase + original 100% = 3100% normal speed).

Loh had a good idea with reductions but I think the calculation would be a hair different, time = original_time(100/(%faster+100)). 100 percent faster would be original_time(100/(100+100)) => original_time(100/200) (1/2) original time.

or by percentage reduction = (100 – (10,000/(100 + percentage increase))) .(0 percent increase would be 0 percent reduction) A 3000% increase would be a 96.8% reduction in time.

By: 3D Animator

3D Animator — Fri, 21 Aug 2009 21:09:47 +0000

Fabulous results! I hope it get’s integrated soon. :) Anyone know when it will be integrated?

By: ZanQdo

ZanQdo — Fri, 21 Aug 2009 14:05:41 +0000

That explanation by Gensher is priceless!

By: thoro

thoro — Fri, 21 Aug 2009 08:04:53 +0000

Great news! Can’t wait to try a Windows build…
There seems to be an OS X build at graphicall.org.

By: ysvry

ysvry — Thu, 20 Aug 2009 23:26:16 +0000

great faster renderer is always welcomed as long as the picture quality stays the same.

that fruit bowl looks kinda familiar:

http://www.sub7th.com/tutorials/fruit/

By: claas eicke

claas eicke — Thu, 20 Aug 2009 20:43:02 +0000

any win or os x build here?

By: madturtle

madturtle — Thu, 20 Aug 2009 19:29:03 +0000

mamoru :
“I still remember rendering a shiny sphere on a reflective checkerboard floor in POV on my 286, took 18 hours to get the first image.
Ah, the good old days.”

….yeah, and the cpu was hot-glowing for next days ;)
Was the time as i wish to get a 40meg Harddisk into my 286 case. “40 Megabyte Harddisk?!?!?!? You never fill it up with data.What you want with that?????” comment by an specialist in an CompuStore.
-Ah, the good old days.- Yes but i don’t miss it if i see what we can do today with blender!

By: mamoru

mamoru — Thu, 20 Aug 2009 18:36:30 +0000

I still remember rendering a shiny sphere on a reflective checkerboard floor in POV on my 286, took 18 hours to get the first image.
Ah, the good old days.

By: Robbie Losee

Robbie Losee — Thu, 20 Aug 2009 14:57:48 +0000

Having used POV-Ray (Persistence Of Vision Raytracer) before learning of Blender, I gained two impressions of raytracing: (1) It makes lighting more realistic and (2) It makes rendering complex scenes as slow as molasses in Alaska. I use raytracing a lot and I can’t wait to try the faster version! Great work!
(P.S. This is not at all a criticism of POV-Ray – I have been using it again recently and it is an amazing program.)