Mix material

[hydeman]

Hi, i've just started to use Corona and love it a lot , but i'm a little bit stuck now , i try to make a dirty material and the "mix" map seams to not
be usable with corona :( Do you guys have a solution/alternative for that ? i don't want to use vray anymoree

[borisquezadaa]

Corona has a "CoronaMixTex"

[hydeman]

Yes ! thanks Boris  it's working very well

[hydeman]

Hum another things, does corona have an equivalent of the ward or blinn shader for metal material creation ?

[Ludvik Koutny]

Mix map should work...  not in a bump map slot though... 

As for the blinn and ward...  no... such shading is extremely old legacy workflow, that usually provided quite inferior results.

Metals in Corona are easy...  use very dark diffuse values, and high Fresnel IOR values.

For reflectivity amount, do not go all the way to 1, try to stay in 0.5-0.9 range.

For fresnel IOR values...  try to stay in range between 4-20 for metals...  4 being rough aluminium and other less reflective metals, 6-8 being brushed steel, 10-15 chrome, and 20 for mirror.

For diffuse value, try to stay really low...  like RGB 0-12.

You should be able to achieve convincing metals with these :)

[hydeman]

Ah ! THanks for the advices Rawalanche it's working pretty well :)

[Seggy]

I need to make a car paint style shader - i cant work out how to layer up the materials - the 3ds max blend is not seeming to work. I looked up some car paints on this forum and downloaded the example files but they wont load :-( Any help appreciated