[macray]

I made some tests with materials in Cinema, as I needed to have some references for the work with the materials. Started with plastics.

All the spheres have the some reflectance colour (137/137/137).

The specular colour changes from left to right (40/40/40 - 120/120/120 - 200/200/200) and the roughness changes from front to back (0/0 - 0.4/0.4 - 0.8/0.8 ) as it is stated in the picture.



Second plastic things are rendering. Now with changing reflectance colour and specular colour.

[macray]

the next one:

this time all spheres have the roughness of u=v=0.

To the right reflectance colour gets brighter, to the back the specular colour is changing to blue.

[goncalo]

Thanks macray

very usefull

[jurX]

thX!

[Becco_UK]

Thank you for compiling those tests. Very understandable and will be use.

[Tyrone Marshall]

Great work Macray!

I added your work to the tips/techniques section!

[macray]

here are some more:



I used a 24 bit floor texture for the colour channel. For the relief channel there is a 24bit, but 8 colour black and white earth, but even though it is set to 800% there seems to be something wrong. The right 3 spheres have a texture with colour+relief channel. Same textures as before.
The plastic spheres in the background have a reflectance colour of (231/0/0) but aas you can see the colour map is overriding it.

results:
- metal uses the relief (bump) map. The colour map is ignored. Might need more testing
- diffuse takes what it is given
- plastics seem to ignore the bump map as well
- all bumps look strange

[macray]

next one: This time it's blue spheres with different attenuation. The materials can be found in your material database that ships with maxwelll.
The spheres have a diameter of 10cm.




If you've seen that picture before and downloaded it - please be sure to use this version - the other one had a wrong description!

[macray]

These 2 pictures show materials from the "basic vol. i" material database.
Should cook the glass a bit longer, but wanted the renders to have rendered appr. the same time 40-60 minutes.

before you ask: All pictures are original size rendered on a Dell Laptop 1.7Ghz PentiumM.

[big K]

thanks for posting all these useful tests !

concerning the bump map i have also noticed some unpredictable results. have you posted this somewhere in the bugs section ?

cheers
michael

[macray]

No. feel free to do it. just wanted to have a pic of every material and then go more into the details. Like how to setup textures, bumps, alpha.... whatever I can think of. (If I have time to do...)

[macray]

[leoA4D]

Thanks for the good works. And, it's easy to understand the relationships, especially your first and second posts.

[macray]

next come the frosted materials. Time to render over the night till tomorrow morning.

Here are the last metals and fashion plastics. Some very ugly rings - but maybe that's the fashion on these plastics.

[macray]

here are the missing material tests, for those who might still need them.