Logo by KRAFTWERK - Contribute your own Logo!

END OF AN ERA, FRACTALFORUMS.COM IS CONTINUED ON FRACTALFORUMS.ORG

it was a great time but no longer maintainable by c.Kleinhuis contact him for any data retrieval,
thanks and see you perhaps in 10 years again

this forum will stay online for reference
News: Check out the originating "3d Mandelbulb" thread here
 
*
Welcome, Guest. Please login or register. March 29, 2024, 06:41:24 AM


Login with username, password and session length


The All New FractalForums is now in Public Beta Testing! Visit FractalForums.org and check it out!


Pages: [1]   Go Down
  Print  
Share this topic on DiggShare this topic on FacebookShare this topic on GoogleShare this topic on RedditShare this topic on StumbleUponShare this topic on Twitter
Author Topic: Graphics card / CPU collaboration for fast high precision raytracing?  (Read 1611 times)
0 Members and 1 Guest are viewing this topic.
Mrz00m
Fractal Lover
**
Posts: 204


« on: October 13, 2014, 09:51:40 PM »

If a graphics card was used to figure ray lengths of a fractal formula to 99% percent precision, and a CPU handled the last 0.01% precision, would the program be able to draw far zoomed in 3d fracals, and would it be 10 times faster, comparable to Kalles Fraktaler program?
Logged
laser blaster
Iterator
*
Posts: 178


« Reply #1 on: October 13, 2014, 11:17:02 PM »

Once you're zoomed in close enough to the fractal, single or even double precision will be totally unable to accurately compute even a single ray step. So your idea wouldn't really work out. On the other hand, it might be possible to extend perturbation theory to 3D fractals, allowing for super-deep zooms, but there's no guarantee.

For now, I think at least double precision zooms could be practical for a very highly optimized GPU raytracer. No current GPU-based fractal raytracer is anywhere near near being fully optimized.

One huge optimization would be to raytrace the scene at a lower resolution, with a higher epsilon value, and use the final depth value as the starting depth for a higher-resolution pass. You could even go up to three or four passes. This would give a large savings in the number of ray steps needed for the final pass.
Logged
Pages: [1]   Go Down
  Print  
 
Jump to:  

Related Topics
Subject Started by Replies Views Last post
High Precision Deep Zoom e+56 Movies Showcase (Rate My Movie) fractalwizz 1 1355 Last post August 17, 2008, 03:43:05 PM
by cKleinhuis
How much more useable precision will I get using quad precision? Programming Duncan C 1 2477 Last post April 15, 2010, 12:16:56 PM
by Botond Kósa
laptop gfx card for opencl : GTX 480M or ATI HD5870 ? (dual card or not ?) Programming ker2x 9 2865 Last post January 10, 2011, 11:24:21 AM
by ker2x
Graphics Programming kronikel 4 2042 Last post October 11, 2011, 06:17:17 PM
by kronikel
3D postal card Mandelbulb3D Gallery abbaszargar 0 540 Last post March 22, 2013, 07:39:23 AM
by abbaszargar

Powered by MySQL Powered by PHP Powered by SMF 1.1.21 | SMF © 2015, Simple Machines

Valid XHTML 1.0! Valid CSS! Dilber MC Theme by HarzeM
Page created in 0.153 seconds with 24 queries. (Pretty URLs adds 0.006s, 2q)