On 07/05/2024 23:41, Droj wrote:
> 
> // Adapted from original function for power 8 by Paul Nylander at
> http://www.bugman123.com;
> // Trace time on an AMD Ryzen7 Eight Core using 16 threads: 7 h 54 min with
> max_gradient 1000
> // Trace time on an AMD Ryzen7 Eight Core using 16 threads: 2 h 34 min with
> max_gradient 200
> -------------------------------------------------------

Hi, Droj !

Very interesting - thanks for sharing.
I've rendered this 800x600 image with max_gradient=1000 (No other
parameters was changed) on Intel(R) Xeon(R) CPU E5-2690 v2 @ 3.00GHz
(40 cores) for 2 min 19 sec and can't figure out how to get make it more
detailed.

Any suggestions, please !
--
YB

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On 07/05/2024 23:41, Droj wrote:
> 
> // Adapted from original function for power 8 by Paul Nylander at
> http://www.bugman123.com;
> // Trace time on an AMD Ryzen7 Eight Core using 16 threads: 7 h 54 min with
> max_gradient 1000
> // Trace time on an AMD Ryzen7 Eight Core using 16 threads: 2 h 34 min with
> max_gradient 200
> -------------------------------------------------------

Hi, Droj !

Very interesting - thanks for sharing.
I've rendered this 800x600 image with max_gradient=1000 (No other
parameters was changed) on Intel(R) Xeon(R) CPU E5-2690 v2 @ 3.00GHz
(40 cores) for 2 min 19 sec and can't figure out how to make it more
detailed.

Any suggestions, please !
-- 
YB

Post a reply to this message

Attachments:
Download 'fract_01.png' (288 KB)

Preview of image 'fract_01.png'

On 07/05/2024 23:41, Droj wrote:
> // Mandelbulb - power 4 - Believe me the power 6 is a vision of hell!

Agree with you - sometimes it looks horrible ...
--------------------------------------------------------------------
camera{location <-2.5,5,5> look_at <-0.5,0,0.3> up z sky z angle 25}
light_source{20*z,1}

#declare f=function(i,x,y,z,xc,yc,zc) {select(i>0 & x*x+y*y+z*z<4, 0, 
sqrt(x*x+y*y+z*z), 
f(i-1,(x*x-y*y)*(1-z*z/(x*x+y*y))+xc,2*x*y*(1-z*z/(x*x+y*y))+yc,-2*z*sqrt(x*x+y*y)+zc,xc,yc,zc))};

isosurface{function{f(24,x,y,z,x,y,z)} threshold 0.5 max_gradient 1000 
contained_by{sphere{<-0.5,0,0>,2}} pigment{rgb 1}}
--------------------------------------------------------------------

--
YB.

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yesbird <sya### [at] gmailcom> wrote:

>
> Very interesting - thanks for sharing.
> I've rendered this 800x600 image with max_gradient=1000 (No other
> parameters was changed) on Intel(R) Xeon(R) CPU E5-2690 v2 @ 3.00GHz
> (40 cores) for 2 min 19 sec and can't figure out how to get make it more
> detailed.
>
> Any suggestions, please !
> --
> YB

Hi yesbird

as I can see you have no problem with the rendering time as I have.

You can increase max_gradient.
When I rendered it the max_gradient Povray found was 33566.

So give it a go.

Droj

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On 09/05/2024 16:23, Droj wrote:
> So give it a go.

Hi, Droj.

Thank you, I will try.
--
YB

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On 09/05/2024 16:23, Droj wrote:
> When I rendered it the max_gradient Povray found was 33566.

It took 15m59,185s for rendering with max_gradient=33566, and n=6,
but I see, that your image looks more smooth and pretty.
What's the secret ? Antialiasing, maybe ... Could you please post
all rendering parameters ?

> // Mandelbulb - power 4 - Believe me the power 6 is a vision of hell!

This teddy bear don't looks like real daemon, but some sort of inferno
is present, no doubt ...
--
YB

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Preview of image 'mand_pow_6_1600x1200.png'

yesbird <sya### [at] gmailcom> wrote:

> It took 15m59,185s for rendering with max_gradient=33566, and n=6,
> but I see, that your image looks more smooth and pretty.
> What's the secret ? Antialiasing, maybe ... Could you please post
> all rendering parameters ?

Hi YB
Oh man you make me weep! 16 min with max_gradient=33566 ... if I try my image
will be finished next week.
Here are the settings of the ini-file I use:
-----------------
Width = 1600
Height = 1200
Antialias = On
Sampling_Method = 1
Antialias_Threshold = 0.0010
Jitter = Off
Antialias_Depth = 9
Output_To_File = On
Output_File_Type = N
Display = On
Verbose = Off
Quality = 11
Input_File_Name =
Output_File_Name =
Initial_Frame = 0
Final_Frame = 0
Subset_Start_Frame = 0
Subset_End_Frame = 0
Test_Abort = On
Test_Abort_Count = 100
--------------------------
>
> > // Mandelbulb - power 4 - Believe me the power 6 is a vision of hell!
>
> This teddy bear don't looks like real daemon, but some sort of inferno
> is present, no doubt ...

Have you ever seen Edvard Munk's painting 'The Scream'? It's disturbing but
Mandelbulb power 6 is worse.

Hope the ini settings will help.

Droj

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On 10/05/2024 01:04, Droj wrote:> Oh man you make me weep! 16 min with 
max_gradient=33566 ... if I try my image
> will be finished next week.
Hi, Droj.

Please, don't cry: I noticed, that your setting are too 'aggressive':
; Antialias_Depth = 9
; Antialias_Threshold = 0.0010
See: https://www.povray.org/documentation/view/3.6.1/223/

making less depth and threshold can seriously improve performance with
almost the same quality.

> Hope the ini settings will help.
Thanks for setting, you've saved a lot of time for me.

> Have you ever seen Edvard Munk's painting 'The Scream'?Yes, sure, this is a famous
painting, but I see something close to
Francisco Goya. :)

Happy poving,
--
YB

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Download 'fract_03_800x600.png' (95 KB)

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On 10/05/2024 01:04, Droj wrote:
>> Oh man you make me weep! 16 min with max_gradient=33566 ...

Hi, Droj.

Please, don't cry: I noticed, that your setting are too 'aggressive':
; Antialias_Depth = 9
; Antialias_Threshold = 0.0010
See: https://www.povray.org/documentation/view/3.6.1/223/

making less depth and threshold can seriously improve performance with
almost the same quality.

>> Hope the ini settings will help.

Thanks for setting, you've saved a lot of time for me.

>> Have you ever seen Edvard Munk's painting 'The Scream'?

Yes, sure, this is a famous painting, but I see something close to
Francisco Goya. 🙂

Happy poving,
-- 
YB

Post a reply to this message

Attachments:
Download 'fract_03_800x600.png' (95 KB)

Preview of image 'fract_03_800x600.png'

On 10/05/2024 01:04, Droj wrote:
> Oh man you make me weep! 16 min with max_gradient=33566 ...

Hi, Droj.

Please, don't cry: I noticed, that your setting are too 'aggressive':
; Antialias_Depth = 9
; Antialias_Threshold = 0.0010
See: https://www.povray.org/documentation/view/3.6.1/223/

making less depth and threshold can seriously improve performance with
almost the same quality.

>  Hope the ini settings will help.

Thanks, you've saved a lot of time for me.

> Have you ever seen Edvard Munk's painting 'The Scream'?Yes, sure, this is a famous
painting, but I see something close to
Francisco Goya. 🙂

Happy poving,
-- 
YB

Post a reply to this message

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Download 'fract_03_1024x768.png' (192 KB)

Preview of image 'fract_03_1024x768.png'