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Rendering Optimisation 1 by IDeviant Rendering Optimisation 1 by IDeviant

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Apophysis Back to Basics: Rendering Optimisation #1

My attempt to:

a) unravel the mysteries of Apophysis rendering parameters in layman's (i.e. my own) terms
b) eliminate jaggies ;)

I hope it proves of some use to noobs and veterans alike - doing the research has certainly cleared up some of my own misconceptions.

So, let 2008 be a jaggy-free year :D
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:iconwillclark218:
willclark218 Featured By Owner Dec 31, 2012  Hobbyist Digital Artist
really excellent info...
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:icondarksan9el:
Darksan9el Featured By Owner Sep 9, 2012  Hobbyist Digital Artist
Cheers for the tut, getting better renders now, might even up a few to show off.
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:iconideviant:
IDeviant Featured By Owner Sep 10, 2012  Hobbyist Digital Artist
Glad it's proved useful! :thumbsup:
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:iconbelenen:
Belenen Featured By Owner Jun 14, 2012  Hobbyist General Artist
thank you!
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:icongelae:
gelae Featured By Owner May 18, 2011  Hobbyist General Artist
Thank you! <3
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:iconcheekacat:
CheekaCat Featured By Owner Nov 19, 2009
Thank you very handy :boogie:
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:iconkikaruu:
Kikaruu Featured By Owner Apr 3, 2009  Student General Artist
Thanks for the help; I understand now what all the values do, and I think my fractals will come out better from now on. :D
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:iconideviant:
IDeviant Featured By Owner Apr 5, 2009  Hobbyist Digital Artist
Cool! It took me ages to actually understand the process, so I hoped to provide a concise reference :nod:
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:iconkarstaag:
Karstaag Featured By Owner Mar 13, 2009  Professional
I've been testing settings most of today. I'm trying your tips now :D
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:iconzweezwyy:
zweeZwyy Featured By Owner Jun 10, 2008
Getting message that this file damaged from Adobe Reader...:confused:
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:iconideviant:
IDeviant Featured By Owner Jun 11, 2008  Hobbyist Digital Artist
What version of Reader? I'm using 8.1.2. Does it attempt to open in the browser? If so, try right-click, Save target as..., then open the saved file once downloaded.
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:iconzweezwyy:
zweeZwyy Featured By Owner Jun 12, 2008
I tried it again & AOK. :D
Must have been having a bad pixel day. :boing:
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:iconbaba49:
baba49 Featured By Owner Jan 6, 2008  Hobbyist Digital Artist
Thank you very much Ian for taking the time to write this explanations down. I expected OS 2 to render twice the size including 100% of the quality.
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:iconideviant:
IDeviant Featured By Owner Jan 7, 2008  Hobbyist Digital Artist
So did I! But I studied the effect of changing the parameters and found that increasing OS didn't increase render time. =banana-tree found the answer to this puzzle from *lyc :D
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:iconbaba49:
baba49 Featured By Owner Jan 7, 2008  Hobbyist Digital Artist
I mean to test that because what ever I have read in the past about render settings was that Quality and OS has a major influence on the rendering time but FR doesn't. My settings are usually Q 2000, FR 0.6, OS 2. I also used to render 1280x1024 and resized in psp by 25% but I don't resize anymore now but use other psp functions to improve the colors if necessary.
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:iconideviant:
IDeviant Featured By Owner Jan 8, 2008  Hobbyist Digital Artist
Resize which way? Never resize upwards! I haven't done any trials with OS=2, but it's worth using the Postprocess render to see the effects of changing the FR - it only takes seconds to apply each change :nod:
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:iconbaba49:
baba49 Featured By Owner Jan 8, 2008  Hobbyist Digital Artist
Nooo I never resize artwork upwards only down sometimes if it gives an improvement. Because I make mostly batch renders using a script I had almost forgotten about the Postprocess option. I will remember to make single renders of tricky flames from now to be able to use the Postprocess function :D Thank you Ian.
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:iconideviant:
IDeviant Featured By Owner Jan 9, 2008  Hobbyist Digital Artist
I used to do batch renders all the time before discovering the OS/FR effect (and the second PC helped!). But now the initial render is invariably completed in less than 10 minutes and often suffices with Postprocess render tweaks. The trouble with batch rendering is that all must be rendered at the same dimensions (with most scripts available). I developed a method (with the aid of spreadsheets) to create a script that renders flames in the batch but to individually specified dimensions and parameters. A bit fiddly to use and I haven't tested it for some time. I must look into it again...
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:iconbaba49:
baba49 Featured By Owner Jan 9, 2008  Hobbyist Digital Artist
Reading this makes me wonder if I still overlooked something :D Have to check the postrender options again. I don't recall having seen an option for post influence on the OS. I thought it was just for FR adjustments and gamma etc. It's always good to talk with people :D
I use a batch render script from Fred that takes care of different dimensions but the FR and OS specification apply to all flames in the batch.
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:iconideviant:
IDeviant Featured By Owner Jan 9, 2008  Hobbyist Digital Artist
No, sorry if I gave the wrong impression - you're quite right about which adjustments are available in Postprocess. What I was referring to is my old method of rendering large and downsizing. That took much more time. Setting OS=4 means that I can render only at the size I need and use the FR post-render to smooth any jaggies.

I've tested and tweaked the spreadsheet to work again. If you're happy with Excel, you're welcome to have a copy BUT the macro code doesn't translate, so unless you have an English version installed, that functionality would be useless. But it's simple to do the copy-and-paste by hand...
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(1 Reply)
:iconesintu:
esintu Featured By Owner Jan 6, 2008  Hobbyist Digital Artist
I'll try this out with a render that came out very jagged.. thanks for the info, it's really clearly put and simple. :)

oh, btw, it was *lyc that cleared my mind, so the real credit goes to him :D
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:iconideviant:
IDeviant Featured By Owner Jan 6, 2008  Hobbyist Digital Artist
Oh well, pass on my gratitude :D And thanks for the feedback, sounds like I pitched it just right. I think if I had to summarise to a single sentence, it would be "test-render at OS=4, Q=500 at around monitor size then adjust in the post-process dialogue before moving to a high-quality render with optimised settings". I'm planning a sequel to pick up oddments like scale/zoom, multithreading and process priority.
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:iconesintu:
esintu Featured By Owner Jan 6, 2008  Hobbyist Digital Artist
well, there goes: [link]
amazing improvement compared to the previous render.. again, thanks :)
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:icongrandma12:
grandma12 Featured By Owner Jan 5, 2008
This tutorial is the clear explanation I've been looking for. Thank you! (If I could get an emoticon to stick to this note tonight it would be "Joy".)
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:iconideviant:
IDeviant Featured By Owner Jan 6, 2008  Hobbyist Digital Artist
Thanks for the feedback - that gives me some assurance that I got the pitch right :nod: No more jaggies :dance:
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:iconsergiomatico:
sergiomatico Featured By Owner Jan 5, 2008
Thank you so much :)
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:iconideviant:
IDeviant Featured By Owner Jan 6, 2008  Hobbyist Digital Artist
Most welcome - hope it proves useful!
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:iconwinklepickers:
winklepickers Featured By Owner Jan 5, 2008
Thank you. :)
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:iconideviant:
IDeviant Featured By Owner Jan 5, 2008  Hobbyist Digital Artist
Most welcome! I find that there's a dearth of real hard information about how the basics actually work. The original flame.pdf that comes with the 2.02 bundle is wonderful... if you're a programmer. I've never fully deciphered it, but it's a useful reference for technical stuff.
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:iconwinklepickers:
winklepickers Featured By Owner Jan 5, 2008
I'll try to understand it, but I'm no mathematician. :)
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:iconisis44:
Isis44 Featured By Owner Jan 5, 2008
Many thanks for this, Ive been searching for a tutorial of this nature for some time. Catherine
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:iconideviant:
IDeviant Featured By Owner Jan 5, 2008  Hobbyist Digital Artist
Cool! Putting it together has clarified it for me, and sharing is good :D
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