Under water - Camera inside of medium

[OnoSendai]

added this to my above post:

"sorry, it should actually be modelled as a closed surface. Otherwise the camera may not think it's inside the water. "

[Kram1032]

If you look VERY carefully, you can see rays, a bit away from the caustics, but it's very weak....

the wall is white, but the water has very slight blue colour and very slight green SSS!

Code: Select all

<medium>
		<name>unclear_Water</name>
		<precedence>10</precedence>
		<basic>
			<ior>1.333</ior>
			<cauchy_b_coeff>0</cauchy_b_coeff>
			<absorption_coefficient_spectrum>
				<rgb>
					<rgb>0.00999999 0.015 0.005</rgb>
				</rgb>
			</absorption_coefficient_spectrum>
			<subsurface_scattering>
				<scattering_coefficient_spectrum>
					<rgb>
						<rgb>0.005 0.015 0.01</rgb>
					</rgb>
				</scattering_coefficient_spectrum>
				<phase_function>
					<uniform/>
				</phase_function>
			</subsurface_scattering>
		</basic>
	</medium>
	<material>
		<name>unclear_Water</name>
		<specular>
			<transparent>true</transparent>
			<internal_medium_name>unclear_Water</internal_medium_name>
		</specular>

And now, I know, what the problem was: the lower part of the water didn't hit the ground -> partly reflective, partly transparent, strange reflections at the floor

[Kram1032]

I finally got some nice visible lightrays, but nothing else xD
It's still the same scene, but I changed the wall a bit:
It's a blend out of THREE materials:
50% Diffuse pure white
25% Phong H2O.nk with maximum possible exponent inside Blendigo
25% Specular, IOR 1.33, SSS uni1, cbc 0.003, absorbtion 0.

For some reason, this mix turns out black.

Therefore, it makes the lightrays fewable, so that you can see the SSS and the blueish tint.
It's a bit tooooo green SSS, should be much whiter and it renders quite slow: ~93 microsecs per sample

I'll post both the scene (.blend) and the pic

[Kram1032]

here they are!

[CTZn]

Actually I'm pretty sure smartden used some cauchy coeff...

A simple plane Ono, how is it ? I was expecting a cube anyway

And yes, some lightbeams would be great !

there is no couchy...
i try get some light beams, but it's not so simple

Aaargh... I've been fooled by the colors appearing along the black lines on the floor... red and blue, just like dispersion... some kind of sampling interference with the texture I guess...

Pretty exciting these beams

[SmartDen]

I've got some rays too

[OnoSendai]

wooooooooooo.... now we're talking!

[manitwo]

...... wow

[mrCarnivore]

WOW!

Now you just need to model some legs oder lower body and the scene is complete. Great!

[Kram1032]

Yes! Finally! How did you get those clear rays + anything else!?

[Kram1032]

Here my final result.
Still noisy, but I wont go on...
more than 13h and not much more than 100 spp ...

[suvakas]

unbelivable rendering SmartDen !!!

[Deus]

Thats sick. I give most the credit to Ono for knocking my socks off for the first time in a long time

Nice render SmartDen

[ryjo]

I would love to see an animation of this, with the ripples moving!

[Kram1032]

@ ryjo:
As long as indigos animations don't grow progressively...

We both needed about 13-15h rendertime. FOR ONE PIC!

Ok, an anim also could have less quality, but....