Rendered the all scenes shellscript.

(linux sources, ubuntu/amd64)

All my gammas are at 1.0, so do not bother with darkness.

Nevertheless, I have the following points which might be checked:

 * chess2.png : a bit too greenish in the reflection ? (cross of kings, and knights,
white
tower)

 * crackle2.png : a missing fifth blue in the middle raw ? (remind me of a bug with
superellipsoid... probably nothing, but strange )

 * desk4.png : the initial blank frame is still visible, is the recursion limit good
enough ? (each iteration get one more desk in frame, not doubling)

 * samp_demo06.png : the top square between magenta & white is not plain, there is a
grey
& darker pattern. Is it as intended ?

Thanks for your comments.

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Attachments:
Download 'chess2.png' (529 KB) Download 'crackle2.png' (210 KB) Download 'desk4.png' (292 KB) Download 'samp_demo06.png' (106 KB)

Preview of image 'chess2.png'

Preview of image 'crackle2.png'

Preview of image 'desk4.png'

Preview of image 'samp_demo06.png'

Le_Forgeron <jgr### [at] freefr> wrote:
>  * chess2.png : a bit too greenish in the reflection ? (cross of kings, and knights,
white
> tower)

This *looks* weird, but it may actually be physically correct; in any case it's
seen with POV 3.6 as well.

>  * crackle2.png : a missing fifth blue in the middle raw ? (remind me of a bug with
> superellipsoid... probably nothing, but strange )

Again, seen with POV 3.6 as well, and from the scene code it is intentional.
Strange though, indeed; maybe it wouldn't work as an isosurface.


>  * desk4.png : the initial blank frame is still visible, is the recursion limit good
> enough ? (each iteration get one more desk in frame, not doubling)

I think it is technically impossible to totally eliminate the blank frame
(except for reducing its size to be no longer discernable).


>  * samp_demo06.png : the top square between magenta & white is not plain, there is a
grey
> & darker pattern. Is it as intended ?

Can't find that scene among the POV 3.6 samples, so no comparison here; in any
case, it seems to me that the square in question is empty (transparent??), and
that we see the shadow of the block to its right

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Le_Forgeron nous illumina en ce 2009-04-21 07:48 -->
> Rendered the all scenes shellscript.
> 
> (linux sources, ubuntu/amd64)
> 
> All my gammas are at 1.0, so do not bother with darkness.
> 
> Nevertheless, I have the following points which might be checked:
> 
>  * chess2.png : a bit too greenish in the reflection ? (cross of kings, and knights,
white
> tower)
Render the same with 3.6
> 
>  * crackle2.png : a missing fifth blue in the middle raw ? (remind me of a bug with
> superellipsoid... probably nothing, but strange )
Ther's a missing piece in the source. You can recreate it if you want.
> 
>  * desk4.png : the initial blank frame is still visible, is the recursion limit good
> enough ? (each iteration get one more desk in frame, not doubling)
Just repeat once more.
> 
>  * samp_demo06.png : the top square between magenta & white is not plain, there is a
grey
> & darker pattern. Is it as intended ?
That looks like an artefact.
> 
> Thanks for your comments.
> 
> 
> ------------------------------------------------------------------------
> 
> 
> ------------------------------------------------------------------------
> 
> 
> ------------------------------------------------------------------------
> 
> 
> ------------------------------------------------------------------------
> 


-- 
Alain
-------------------------------------------------
You know you've been raytracing too long when you resign the fact that printing 
uses CMYK instead of RGB to one of those tests God gave to Job; otherwise life 
would be too painful to go on.
     -- Taps a.k.a. Tapio Vocadlo

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clipka schrieb:
> 
> 
>> * crackle2.png : a missing fifth blue in the middle raw ? (remind me of a bug with
>>superellipsoid... probably nothing, but strange )
> 
> 
> Again, seen with POV 3.6 as well, and from the scene code it is intentional.
> Strange though, indeed; maybe it wouldn't work as an isosurface.

This had been removed from the scene during POV-Ray 3.5 development 
since at that time crackle metric 1 worked in a way unsuited for 
isosurfaces (infinite gradient)

-- Christoph

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