car shader - flakes, sparkle ?

[vlado]

Nope, Peter is away in Germany still; I've emailed him to send it when he has time.

Anyways, there are two types of car paint normally. The regular car paint, which is some metallic particles sprinkled over a regular paint; and "pearl" car paint which consists of small reflective spheres of different colors mixed together and covered with transparent coating - this may give some clues for simulating it

Best regards,
Vlado

[bernhard]

hmm...

thx vlado and everybody else for participating and cracking this nut.

today I didn't have time to make more tests. below my last try from yesterday night.




hmm,m the transparent coating is maybe a great idea.. I will run some more tests and I'lll keep you posted. Ohh yeah, - hopefully Peter will be back soon from Germany.

till then,
bernhard

[playford]

If you think about the composition of car paint it might help you create the material. Paints have a undercoat which is different depending on the top colour, then the base colour is applied. If you want to have a sparkle effect that would be applied in the clear coat which is the bit that makes the car shine. Some metal flakes are applied in the base coat. Have you tried using a composite material with a base colour and then a falloff map for the clear coat with the speckle in or I remeber people using a shellac map before.

Hope this helps.

Mark

[bernhard]

hmm...

Hello and thank you all for your ideas and support.

I've started today some new mad vray science tests and was getting deeper in the crazy world of flake sparkle carpaints.

I guess I tried already many, many ways... but all of them didn't look like I would like to reach.... uff...

@playford:
thx for the idea with the composite mat, I didnt' try that one, so I will give my best in my next mad vray lab experiment.... lol:

thank you ... sooo... Peter... where are you ?
still driving around in germany ?

till later,
bernhard

[RErender]

I did this one with cellular maps in the anisotropy and anisotropy rotation slots, looked cool on the sphere but when I put it on a car model it didn't look too great, didn't have much time to play after that. Might be worth investigating more though.

[PIXELBOX_SRO]

unfortunately i think the vray-materials site lacks a very important information in their materials and that is the texture size ...most of them r useless even if they look cool on the sample image

[Morne]

its this reason that I always wanted some kind of presets built into the vraymaterials. Everybody always says what for? just get stuff from vraymaterials.de

My point is any clown can post their materials there so you are not sure of 100% professional quality.

[Shoey]

its this reason that I always wanted some kind of presets built into the vraymaterials. Everybody always says what for? just get stuff from vraymaterials.de

My point is any clown can post their materials there so you are not sure of 100% professional quality.

Agreed. A more official material collection would serve much more use than the ones on vraymaterials.de. There are so many bad materials on there, it's hard to find the good from the bad. i nearlly always just end up making my own. I'm not saying that there isn't any good materials on there, cos there are some great ones! just a lot more that are bad.

[simmsimaging]

How did you make out with my material ? I thought it was going somewhere.

[bernhard]

hmm..

I didnt' have much more time to make more flake tests...

@brett:
even with your mat, I dind't have time to run some more tests...

but as soon as I make some progress, I'll let you know.

about vray-materials website:
well, I can't and don't want complain... no.. I appreciate that site as well, because you get several ideas and you can find really interesting things - what you do after, is up to every artist.

sometimes, I would appreciate a vray mat library that comes from chaosgroup.... from flake carpaint to human skin, etc.

bernhard

[playford]

Hi all,

I've been doing some test and some searching and I've found some done by someone called Thykka. They're really good.

http://thykka.deviantart.com/art/Met...VRay-104741632

Hope this helps
Mark

[Klonsemann]

I've had to build a shell lime wall shader with simular problems like your car shader "flakes".

I ended up with using 2k noise texture done in CS instead of any type of procedural noise. The bitmap filtering gives much better results in the distance on larger objects and polygons with a flat angle to the cam.