Author Topic: Sunlight on water, maybe a bug  (Read 2816 times)

Offline David Burnett

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Sunlight on water, maybe a bug
« on: December 28, 2006, 08:57:38 PM »
After rendering my first 'proper' render, i.e. not just playing around, I did not like the
results of the sunlight reflected on the water.
See thread

After buying a licence, I tried rendering again with higher settings, increasing anti-aliasing helped
but I still did not like the results, increasing detail had no other effect than increasing the
rendering times, even with a quality of 3.

I decided to reduce the roughness of the water to see what the effect
would be,  reducing the roughness and smallest scale on the water shader.
I reduced them a little to far and got the attached image on a full render (cropped) with a quality of 1
and aa of 5.

Notice the really ugly rendering of the suns reflection on the edges of the 'waves', 
the anti-aliasing seems non-existent, especially compared to the rest of the edge.

Is this a bug or a quirk or the TG2's renderer ?

« Last Edit: December 28, 2006, 09:05:00 PM by David Burnett »

Offline Oshyan

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Re: Sunlight on water, maybe a bug
« Reply #1 on: December 30, 2006, 02:25:48 AM »
The handling of extremely bright surfaces still needs some work. AA is designed to mostly deal with "normal" brightness ranges. When the brightness of something changes that dramatically within a small distance, AA can often be ineffective unless it's at ridiculous values. I think that's what you're seeing here. We will be working on specific handling of situations like this, where in photography or the human eye for example you might get a "glow" or "flare" effect.

- Oshyan