Hi all,

Well, I went a little crazy playing with the Ivy Generator a few days ago and
ended up with 70 different ivy meshes grown on this (rather simple) Sponza
Atrium mesh. All converted to Mesh2 via PoseRay.

Render examples follow...

-Rob

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Attachments:
Download 'ivy_on_sponza.jpg' (418 KB)

Preview of image 'ivy_on_sponza.jpg'

Using the ambient occlusion method that I was obsessing on all week I first
rendered a lightless AO pass; then I used MegaPov to render a full-color HDRI
pass with one main light_source. Tons of focal blur samples. 49 hours for both
passes (ouch).

Finally I rendered a composite of the HDRI and AO renders. I was able to easily
tweak the balance of light and shadow during the composite render by varying a
single parameter between 0 and 1. I found this to much more artist-friendly than
re-rendering the whole thing again.

Here are some small sample tests, full-size render follows...

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Attachments:
Download 'sponza_steps_600.jpg' (503 KB)

Preview of image 'sponza_steps_600.jpg'

The previous 49 hours for the AO and HDRI passes don't make this realtime
raytracing by any stretch, but I really like being able to vary the blend of
AO-shadow and full-color until I'm satisified with it.

Here's the full-size composite render, which took about 10 seconds.

Cheers,
-Rob

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Attachments:
Download 'rwm_sponza_atrium3.jpg' (683 KB)

Preview of image 'rwm_sponza_atrium3.jpg'

"Robert McGregor" <rob### [at] mcgregorfineartcom> schreef in bericht 
news:web.48fbd297b212fa4bd1b3ad10@news.povray.org...
> The previous 49 hours for the AO and HDRI passes don't make this realtime
> raytracing by any stretch, but I really like being able to vary the blend 
> of
> AO-shadow and full-color until I'm satisified with it.
>
> Here's the full-size composite render, which took about 10 seconds.
>
> Cheers,
> -Rob
>
>

The result has a very strong 3D feeling, mainly due I suppose to the 
blurring. Really impressive.
I am not a big fan of focal blur in general. I wonder how the scene would 
look without it?

Thomas

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"Thomas de Groot" <t.d### [at] internlDOTnet> wrote:
> "Robert McGregor" <rob### [at] mcgregorfineartcom> schreef in bericht
> news:web.48fbd297b212fa4bd1b3ad10@news.povray.org...
> > The previous 49 hours for the AO and HDRI passes don't make this realtime
> > raytracing by any stretch, but I really like being able to vary the blend
> > of
> > AO-shadow and full-color until I'm satisified with it.
> >
> > Here's the full-size composite render, which took about 10 seconds.
> >
> > Cheers,
> > -Rob
>
> The result has a very strong 3D feeling, mainly due I suppose to the
> blurring. Really impressive.
> I am not a big fan of focal blur in general. I wonder how the scene would
> look without it?

The image looks stunning, but the exaggerated focal blur gives the impression
that we are looking at a miniature building, maybe 30cm high... if anything,
only the ivy in the extreme foreground (right-hand side) should be blurred.

Of course, that wasn't the point of your render, and I agree, being able to
tweak the light level in a quick apres-AO pass is very powerful. Great stuff!

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Robert McGregor wrote:
> Here's the full-size composite render, which took about 10 seconds.

  This is one of the best uses of focal blur I have seen in a POV-Ray image.

  Don't listen to those focal blur haters. It rules!

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Warp escreveu:
> Robert McGregor wrote:
>> Here's the full-size composite render, which took about 10 seconds.
> 
>   This is one of the best uses of focal blur I have seen in a POV-Ray image.
> 
>   Don't listen to those focal blur haters. It rules!

It rocks! :)

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Didn't wrote anything for month'. Part of because I was busy moving from 
Germany to Denmark.

But this image is stunning! It reminds me of the LOTR-Films (which I like 
:-)) - it's even better!

Thanks,
Marc-Hendrik

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Warp <war### [at] tagpovrayorg> wrote:
> Robert McGregor wrote:
> > Here's the full-size composite render, which took about 10 seconds.
>
>   This is one of the best uses of focal blur I have seen in a POV-Ray image.
>
>   Don't listen to those focal blur haters. It rules!

I agree.

Excellent contrast. Cold.
I suggest a sky dark, purplish.

It would be interesting to also try the "Luminous Bloom" by Samuel Benge.

There are several minutes that I look the image!

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"Warp" <war### [at] tagpovrayorg> schreef in bericht 
news:48fcb103@news.povray.org...
>
>  Don't listen to those focal blur haters. It rules!


Amen...  ;-)

Thomas

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