Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] I need help! => Topic started by: bishbashross on 2015-08-24, 20:02:36

Title: Corona Multimap help
Post by: bishbashross on 2015-08-24, 20:02:36

Struggling to get the results I want with Multimap in diffuse. I've created a clump of grass and am trying to get each blade to be a slightly different shade.

When I set the Multimap to Instance it sets the colour of the clumps as a whole. When I set it to Primitive it seems to affect the individual poly or triangle.

Is it possible to have each blade a random different shade of green. I guess I could use material ID but then the colours would match for each clump I think.

Any suggestions?

Edit

From a performance point of view when making grass is it better to scatter a clump or individual blades?

Title: Re: Corona Multimap help
Post by: maru on 2015-08-25, 12:28:45

From what I know, not possible yet. It would require per element distribution, or something similar.

Quote

From a performance point of view when making grass is it better to scatter a clump or individual blades?

Clump. Especially if you are rendering a massive lawn. :)

Title: Re: Corona Multimap help
Post by: maru on 2015-08-25, 12:58:05

Another idea. Nested multi maps. :) This makes few variations of the clump. The pattern should not be very obvious and it will be totally unnoticeable if you add random z rotation.

Title: Re: Corona Multimap help
Post by: bishbashross on 2015-08-25, 14:23:09

Interesting. Thanks for your help. Currently I've gone for various clumps with different material ID's but your way might offer better performance.