Logo by Timeroot - Contribute your own Logo!
News: Check out the originating "3d Mandelbulb" thread here
 
*
Welcome, Guest. Please login or register. September 25, 2017, 05:06:11 PM


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 [2]   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: How to burn a few teraflops  (Read 7219 times)
0 Members and 1 Guest are viewing this topic.
knighty
Fractal Iambus
***
Posts: 818


« Reply #15 on: December 23, 2015, 09:04:13 PM »

You will need to do:
Code:
return length(p) * pow(scale, (float)-n-1.f);
That's because you bail out before incrementing n.
Of course you can increment n before testing for bailout instead.

A slight scaling down (by a factor say .99) would be necessary to avoid some overstepping. Another way to avoid that slight overstepping is to subtract the radius of the bounding sphere from p:
Code:
return (length(p) - Bounding_sphere_radius) * pow(scale, (float)-n-1.f);

In order to save some CPU cycles:
Code:
      float t=dot(p,n);
      if (t>0.0) p-=2.0*t*n;
or
Code:
p-=2.0*max(dot(p,n),0)*n;
are faster than using matrices.

BTW! happy holydays.  smiley
Logged
lycium
Fractal Supremo
*****
Posts: 1157



WWW
« Reply #16 on: January 09, 2016, 12:37:28 PM »

What a huge speed difference that makes cheesy Thanks for this, I had some fun over the holidays with it:



Happy new year to you too mate!
Logged

lycium
Fractal Supremo
*****
Posts: 1157



WWW
« Reply #17 on: July 19, 2016, 02:17:45 AM »

just a quick quaternion julia with some motion blur in a little toy gpu ray tracer, click for 4K res:

Logged

lycium
Fractal Supremo
*****
Posts: 1157



WWW
« Reply #18 on: August 02, 2016, 10:59:03 PM »

another simple quaternion julia, to exercise the new gtx 1070. click for 8K res:

« Last Edit: August 03, 2016, 01:21:42 AM by lycium » Logged

lycium
Fractal Supremo
*****
Posts: 1157



WWW
« Reply #19 on: August 04, 2016, 02:46:15 PM »

menger sponge, thanks Aexion for the DE formula! sorry for the noise and over-saturation. click for 4K res:

Logged

lycium
Fractal Supremo
*****
Posts: 1157



WWW
« Reply #20 on: August 15, 2016, 12:28:32 AM »

more stuff... click for high res


(thanks again to Knighty!)


(from the Fragmentarium examples)




some experimental stuff using DEs from Aexion:



« Last Edit: August 15, 2016, 03:52:16 AM by lycium » Logged

lycium
Fractal Supremo
*****
Posts: 1157



WWW
« Reply #21 on: August 15, 2016, 03:53:58 AM »

8 minutes rendering, 8 bounces diffuse gi, gtx 1070 @ 2ghz (click for 8K)

Edit: removed image, updated with higher quality below
« Last Edit: August 15, 2016, 11:24:31 PM by lycium » Logged

hobold
Fractal Bachius
*
Posts: 570


« Reply #22 on: August 15, 2016, 11:57:07 AM »

At that speed, you could conceivably render animations at that same extreme image and lighting quality. Those should end up looking very real.
Logged
knighty
Fractal Iambus
***
Posts: 818


« Reply #23 on: August 15, 2016, 04:48:34 PM »

 shocked
 Wow Repeating Zooming Self-Silimilar Thumb Up, by Craig w00t !!
 the wave the wave the wave
Logged
lycium
Fractal Supremo
*****
Posts: 1157



WWW
« Reply #24 on: August 15, 2016, 11:23:51 PM »

glad you like it knighty, you're the hero of the show here with the awesome kaleidoscopic IFS DE smiley i'd be honoured to render any other fun stuff you'd like to suggest cheesy

hobold, what usually happens in this situation is, i do a deeper zoom / crank up the visual quality until it needs an overnight render wink

updated overnight render, click for 8K:


Logged

knighty
Fractal Iambus
***
Posts: 818


« Reply #25 on: August 16, 2016, 05:07:21 PM »

Video plz.
 Sponge Bob looney
Logged
lycium
Fractal Supremo
*****
Posts: 1157



WWW
« Reply #26 on: August 25, 2016, 02:14:21 AM »

Video plz.

Sorry for the delay, I'm upgrading my little shader editing thing into a full animation editing studio thing smiley I would love to share it with you (privately) someday!
Logged

Pages: 1 [2]   Go Down
  Print  
 
Jump to:  

Related Topics
Subject Started by Replies Views Last post
burn buggy glynn Images Showcase (Rate My Fractal) yv3 0 753 Last post January 13, 2011, 08:23:40 PM
by yv3
Burn the ship down Movies Showcase (Rate My Movie) teamfresh 2 539 Last post January 28, 2015, 01:18:43 PM
by teamfresh

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 0.307 seconds with 28 queries. (Pretty URLs adds 0.014s, 2q)