[pluMmet]

In this image the floor is plastic however the there is no gloss activated.
the big duck is plastic with scatter .5 and absorb .05. Notice that this duck is reflective even though there is no gloss in the material.

EDIT* I should have used the word MIRRORED instead of reflective *



OH Ya! and it crashes at sample level 10....

[rivoli]

i can't get your point here. what do you mean by plastic is reflective even without gloss? glossyness does not control specular reflections.

[pluMmet]

Well for starters specular is a highlight not a reflection...and just to let you know I have no maps in the specular channel either!

The big duck is reflected in the floor and the floor in the big duck. Plastic should not have a default reflection.

Also an exact mirror of the duck emiters in the floor is a reflection. For example if I have a light bulb right next to a wall you don't see a mirror of the bulb you see specular highlights even if the wall is plastic.

[rivoli]

well, highlights are specular reflections (what you call highlights in shaders like phong, blinn and so on, are faked reflections of strong light sources).

plastic does have a default reflection, plastic is a reflective material, and its amount is determinated by the specular color (default is dark grey, the more you go toward white the more reflectivity you get, while the more you go toward black the more your plastic gets less reflective).

by the way it doesn't matter if you have a map or not in the specular channel.

[pluMmet]

plastic is a reflective material

sorry but incorrect! plastic can be reflective but all plastic is not reflective.

reflective is the quality of a mirror. 100% reflective is a mirror. Color bleed and specular highlights are not reflectivity.

Can you not go over the thousands of examples in your mind of plastics that have no mirroring qualities?

[pluMmet]

These plastic soap cases are not reflective:

[pluMmet]

1 more example of a non-reflective plastic:

[rivoli]

i was referring to plastic as a maxwell's material, thought that was the subject.

i did not say plastic in maxwel is 100% reflective. it can absorb 50% of light and bounce back the other 50%, or absorb 90% bouncing back 10%. what plastic gives you that a diffuse shader won't are reflections, if you don't want them just use a diffuse instead.

by the way, those cases are reflective as you can clearly see. they have a quite irregular surface (rough) so reflections are quite blurry.

[rivoli]

1 more example of a non-reflective plastic:

it is reflective as well as those cases.

[pluMmet]

sorry for the confusion...I use plastic for the duck because I wanted to test the s.s.s. so I had no choice. As for the floor I was going for a wood floor like so many of the nice floors you have done but when I saw they weren't working right I switched to the marble diffuse trying to see why the plastic wasn't working right.

[Mihai]

you have sss with the diffuse as well, no need to use plastic mat.

[pluMmet]

it is reflective as well as those cases.

If we go by what you are saying then the only known non reflective thing in the universe is a black hole

[rivoli]

as long as i know diffuse can do sss as well as plastic, if you don't want reflections there just use a diffuse shader instead of a plastic one.

[pluMmet]

plastic diffuses light differently then something that is considered a diffuse. Look I'm not trying to debate Maxwells current inner workings. The reason I got Maxwell is it's True calculation of light. I just didn't expect plastic to have an automatic reflection. I'm not mad or anything it's just not correct and I didn't think this would happen in the alpha but maybe I'll check.

[rivoli]

as adam says, looking around us we'd be hard pressed to find a totally non reflective material or surface.