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Author Topic: Mandelbulb flight  (Read 4425 times)
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Snakehand
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« on: December 28, 2009, 12:49:43 PM »

<a href="http://www.youtube.com/v/oe2bzLH65_A&rel=1&fs=1&hd=1" target="_blank">http://www.youtube.com/v/oe2bzLH65_A&rel=1&fs=1&hd=1</a>

Please watch in HD.
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twinbee
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« Reply #1 on: December 31, 2009, 05:46:44 PM »

Great fly-through over lush broccoli vegetation. All we need now is some music by Salomonsen wink

Like to see some spline-like camera paths with this.
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Snakehand
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« Reply #2 on: January 02, 2010, 07:35:18 PM »

I made another rendering using my dual GPU setup:

<a href="http://www.youtube.com/v/qLX01LYS-24&rel=1&fs=1&hd=1" target="_blank">http://www.youtube.com/v/qLX01LYS-24&rel=1&fs=1&hd=1</a>

I have tried to have some emphasis on zoom and close up action. Splines as suggested by twinbee are still on the todo list.
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BradC
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« Reply #3 on: January 02, 2010, 10:05:41 PM »

Wow, that's an awesome flight. Implement splines! I used Catmull-Rom splines in this one and it wasn't as hard as I expected

    <a href="http://www.youtube.com/v/osFmse_KycA&amp;hl=en_US&amp;fs=1&amp" target="_blank">http://www.youtube.com/v/osFmse_KycA&amp;hl=en_US&amp;fs=1&amp;</a>

and your renderer looks better than mine. The quantities I interpolated were camera position (x, y, z) and lookat point (x, y, z). I used a key frame every 3 seconds or so. For camera roll, I kept the camera up vector as close to (0,0,1) as possible while still facing the lookat point. In other words, I tried to avoid roll because it was simpler, but roll looks good too.
« Last Edit: January 02, 2010, 10:13:57 PM by BradC » Logged
David Makin
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« Reply #4 on: January 02, 2010, 10:09:17 PM »

I made another rendering using my dual GPU setup:
<snip>
I have tried to have some emphasis on zoom and close up action. Splines as suggested by twinbee are still on the todo list.


Very nice indeed.

Are you restricted by limitation to floats or can your GPUs/GPU code use doubles ? If possible I'd love to see a much deeper zoom - and obviously a much longer video - say a DVD's worth of flying round the Mandelbulb cheesy - well say a full 10minute HD video on YouTube anyway.
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Snakehand
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« Reply #5 on: January 02, 2010, 11:33:00 PM »

Very nice indeed.

Are you restricted by limitation to floats or can your GPUs/GPU code use doubles ? If possible I'd love to see a much deeper zoom - and obviously a much longer video - say a DVD's worth of flying round the Mandelbulb cheesy - well say a full 10minute HD video on YouTube anyway.


Thanks. Newer GPUs have double support. On ATI each thread runs on a group of 5 float cores x,y,z,w,t - each core can perform a float opearation every cycle. ( 2 in the case of multiply and add ) - and transcendental instructions are limited to the t core. When calculating doubles, the x+y and z+w core can be linked up (leaving t unused). The 5850 then gets in the neighbourhood of 500 Gflops. But there are som practicalities, double vectors are limited in size to 2 elements (Brook+) so the vectorized code has to be restructured quite a bit. And binary search for DE etc. will have to do more iterations. I should perhaps try to use Newton-Raphson method first.
  
« Last Edit: January 02, 2010, 11:47:10 PM by Snakehand » Logged
David Makin
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« Reply #6 on: January 02, 2010, 11:48:36 PM »

Very nice indeed.

Are you restricted by limitation to floats or can your GPUs/GPU code use doubles ? If possible I'd love to see a much deeper zoom - and obviously a much longer video - say a DVD's worth of flying round the Mandelbulb cheesy - well say a full 10minute HD video on YouTube anyway.


Thanks. Newer GPUs have double support. On ATI each thread runs on a 5 way SIMD engine, with 5 float cores x,y,z,w,t - each core can perform a float opearation every cycle. ( 2 in the case of multiply and add ) - and transcendental instructions are limited to the t core. When calculating doubles, the x+y and z+w core can be linked up (leaving t unused). The 5850 then gets in the neighbourhood of 500 Gflops. But there are som practicalities, double vectors are limited in size to 2 elements (Brook+) so the vectorized code has to be restructured quite a bit. And binary search for DE etc. will have to do more iterations. I should perhaps try to use Newton-Raphson method first.
 

Thanks. I'm hoping to acquire high-end video card/s sometime this year wink

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bib
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« Reply #7 on: January 03, 2010, 12:43:11 PM »

Wow! Excellent trip!
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jwm-art
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« Reply #8 on: January 04, 2010, 06:01:08 PM »

Love it!

Would though like to see further excursions inside some of the structures and a less angular flight path. Ok I see splines have been mentioned, but what about some dives, or a smoothed fractal flight path!?
« Last Edit: January 04, 2010, 06:03:59 PM by jwm-art » Logged
Buddhi
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« Reply #9 on: January 06, 2010, 09:18:52 PM »

Snakehand, your animations are fantastic and rendering speed is incredible!

I don't want to be worse  tease and I also decided to render some long flight animation. After many (very many  cry ) hours of rendering I can present my work (1 frame / 10s)

<a href="http://www.youtube.com/v/xO5fXGqeM5c&rel=1&fs=1&hd=1" target="_blank">http://www.youtube.com/v/xO5fXGqeM5c&rel=1&fs=1&hd=1</a>
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twinbee
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« Reply #10 on: January 06, 2010, 10:07:38 PM »

We keep leap frogging each other don't we?

Buddhi, this is utterly remarkable. I've only seen a 1/4 of the video, because Youtube is *very* slow at the moment, but the amount I've seen so far is incredible. The resolution is great, but the colours, and special light glow are also amazing. You may have been exhausted over this, but how worth it has it been?! WOW^WOW^WOW.

I'm also a teensy-weensy bit jealous now, so don't worry, I *will* attempt to re-leapfrog this (as I'm sure others will) smiley , though you've given us a tough job - very cruel! wink
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cKleinhuis
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« Reply #11 on: January 06, 2010, 10:12:18 PM »

@buddi @bradc @snakehand
amazing videos !

and the last one i love because it is extremely long, has a cool lighting effect, and an interesting camera path ...

well done!  afro
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cbuchner1
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« Reply #12 on: January 07, 2010, 12:07:29 AM »


I don't want to be worse  tease and I also decided to render some long flight animation. After many (very many  cry ) hours of rendering I can present my work (1 frame / 10s)

Congratulations this is one of the best Mandelbulb animations I've seen so far.

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David Makin
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« Reply #13 on: January 07, 2010, 12:15:26 AM »

Most excellent - especially the end section smiley
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Melancholyman
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« Reply #14 on: January 07, 2010, 02:03:22 AM »

 afro afro afro
 alien alien alien
 shocked shocked shocked
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