Well well well.. I wanted to redo the old checkered plane thingy, and I did.
Actually, this image was meant as a very simple example on the subject,
demonstrating the "hello world" or something. i spent more time tracing the
image then I did creating it... (Bad sign. Very Bad).

I'd like some input on how to make this scene a faster trace. i think i know
where the problem is (there is a texture that goes from reflection 0 to
reflection 1, and has a filter value to it. you're right, it's the text object
:-) Anyone here who know how to get it just a bit faster? (ok, a few 1000
percent?) 

As it is, I wanted a render in 1024x728, aa 0.3, max_trace_level >15, but the
pps dropped to around 12 then. annd it was still dropping when I aborted(I don't
have that much time)

Anyone know what would help? 
800x600, no aa, max_trace_level of 6 takes 1 hour 4 mins on this p166 (running
200) I know, get a faster pc, but anyway... *smiles*

	
-- 
//Spider    --  [ spi### [at] bahnhofse ]-[ http://www.bahnhof.se/~spider/ ]
And the meek'll inherit what they damn well please
	Get ahead, go figure, go ahead and pull the trigger
		Everything under the gun
			--"Sisters Of Mercy" -- "Under The Gun"

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Spider wrote:

> Anyone know what would help?
> 800x600, no aa, max_trace_level of 6 takes 1 hour 4 mins on this p166 (running
> 200) I know, get a faster pc, but anyway... *smiles*
> //Spider    --  [ spi### [at] bahnhofse ]-[ http://www.bahnhof.se/~spider/ ]

  You should know better than to ask a question like that without providing
something to look at. Anything less is guessing on our part and is counter
productive. I will offer you this though and it might just help:

http://www.students.tut.fi/~warp/povVFAQ.html#renderingspeed  { ^8

> And the meek'll inherit what they damn well please
  ^      ^       ^       ^       ^       ^
  Horse feathers and chicken lips !

-- 
Ken Tyler

mailto://tylereng@pacbell.net

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*laugh*
Source in .text.scenefiles any moment :-)

-- 
//Spider    --  [ spi### [at] bahnhofse ]-[ http://www.bahnhof.se/~spider/ ]
And the meek'll inherit what they damn well please
	Get ahead, go figure, go ahead and pull the trigger
		Everything under the gun
			--"Sisters Of Mercy" -- "Under The Gun"

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now.


Spider wrote:
> 
> *laugh*
> Source in .text.scenefiles any moment :-)
> 
> --
> //Spider    --  [ spi### [at] bahnhofse ]-[ http://www.bahnhof.se/~spider/ ]
> And the meek'll inherit what they damn well please
>         Get ahead, go figure, go ahead and pull the trigger
>                 Everything under the gun
>                         --"Sisters Of Mercy" -- "Under The Gun"

-- 
//Spider    --  [ spi### [at] bahnhofse ]-[ http://www.bahnhof.se/~spider/ ]
And the meek'll inherit what they damn well please
	Get ahead, go figure, go ahead and pull the trigger
		Everything under the gun
			--"Sisters Of Mercy" -- "Under The Gun"

Post a reply to this message

Spider wrote:
> 
> *laugh*
> Source in .text.scenefiles any moment :-)
> 
> --
> //Spider    --  [ spi### [at] bahnhofse ]-[ http://www.bahnhof.se/~spider/ ]

  After further evaluation I conclude you ain't gonna have your cake
and eat it too with this one. In fact I think you are certifiably
mad.
  You have a perfect mirror sitting behind semi transparent objects,
these with moderate ior values, high reflection values specified in
the textures used, you didn't even bother adjusting the max trace level
to what you knew you would eventually have to raise it to, especially if
you ever dreamed of it coming out with something close to a decent image
quality. Your biggest problem with this one is the semi transparent
texture and the high reflection values. You have internal reflections
coming out the wazoo on those multi faced font objects.
  Add to that all of the light being reflected back into the fonts
objects from the mirror surfaced sphere behind it and you don't stand
a chance me bucko. Additionaly to add misery to an already bloody scene
file you specified and enormous phong highlight for the floor, lit by
a bright spot light, which is adding it's extra reflected light into
every nook and cranny on the internally reflecting surfaces of the font
objects. I am not even sure a Cray would handle this one smoothly and
in a short time period. Don't you ever try anything simple ? There is
a lot that can be accomplished without such grandiose manoeuvres as you
are attempting with this one.
  Hell fire and damnation man be reasonable ! There are reasonable limits
to these things and you seem to have tossed out the rule books long ago.

With my humble regards,

-- 
Ken Tyler

mailto://tylereng@pacbell.net

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*bows humbled to uncle ken*


Ken wrote:
> 
> Spider wrote:
> >
> > *laugh*
> > Source in .text.scenefiles any moment :-)
> >
> > --
> > //Spider    --  [ spi### [at] bahnhofse ]-[ http://www.bahnhof.se/~spider/ ]
> 
>   After further evaluation I conclude you ain't gonna have your cake
> and eat it too with this one. In fact I think you are certifiably
> mad.
As a first reply. *ohhh* *sigh* i really want that.. isn't there another cake I
can have then? *hopeful*
to the second part: I know this, you know this, the rest of the world knows
this... Humma.. well, that covers it. *manic giggle*

>   You have a perfect mirror sitting behind semi transparent objects,
> these with moderate ior values, high reflection values specified in
> the textures used, you didn't even bother adjusting the max trace level
> to what you knew you would eventually have to raise it to, especially if
> you ever dreamed of it coming out with something close to a decent image
> quality. 

Well, I had this value high(if you recall the original post, I think I mentioned
it there) but I had to lower it since I made a preliminary render on a very
pressured time-schelude. I know this value should be around 80 in this scene,
and if I wanted a better render-speed I'd have to raise adc_bailout to about
1/200 or so. 

> Your biggest problem with this one is the semi transparent
> texture and the high reflection values. You have internal reflections
> coming out the wazoo on those multi faced font objects.

I know, but I actually love the effect of an object that is gradiented from
transparency to reflection. I think it would be faster if the lower texture
weren't transparent, but I'm not certain. I'd have to do test-renders on this
case to verify this.

>   Add to that all of the light being reflected back into the fonts
> objects from the mirror surfaced sphere behind it and you don't stand
> a chance me bucko.

i know, I have tried and rendered this on several different settings. (The aa is
to forget in this case, imagine tracing 4 rays for each pixel?)

>  Additionaly to add misery to an already bloody scene
> file you specified and enormous phong highlight for the floor, lit by
> a bright spot light, which is adding it's extra reflected light into
> every nook and cranny on the internally reflecting surfaces of the font
> objects. 

Hmm.. Well, I guess it would be better with a "softer" light. I'm uncertain of
how the phong on the floor affects thee renders, I'll have a look and see. It's
not really that important for me in this case.

>  I am not even sure a Cray would handle this one smoothly and
> in a short time period.

hmm... Anyone care to sacrifice his cray for this? *smile* lets see how long we
can lock it up, shall we? :-) (hmm, extreme AA, and a big image.. should be some
samplings)

>  Don't you ever try anything simple ?
ehh.. I called this one simple... well, perhaps I should re-define my sense of
"simple" some time soon. I don't think it fits the rest of the world... *smiles*

>  There is
> a lot that can be accomplished without such grandiose manoeuvres as you
> are attempting with this one.
Of course.. you know what, I was thinking of adding... photons to this image...
care to see a long render then? *discards the idea*

>   Hell fire and damnation man be reasonable ! There are reasonable limits
> to these things and you seem to have tossed out the rule books long ago.

I just have to quote Andrew Eldritch on this:
-------------
All my words are secondhand and
Useless in the face of this
	Rationale and rhyme and reason
	Pale beside a single kiss
And I've heard so many things I
Fail to understand at all
I'd settle anytime for
Unknown footsteps in the hall outside
------------

But then. i'm the mad one, remember? 
 
> With my humble regards,
*smile* I don't think you need to be humble. At least not to this mad-man. 
 
Thankyou for your (kind) comments on my pathetic attempts to simplicity.

-- 
//Spider    --  [ spi### [at] bahnhofse ]-[ http://www.bahnhof.se/~spider/ ]
And the meek'll inherit what they damn well please
	Get ahead, go figure, go ahead and pull the trigger
		Everything under the gun
			--"Sisters Of Mercy" -- "Under The Gun"

Post a reply to this message