On Feb 14, 4:43 am, "Felipe Esquivel" <felip...@[EMAIL PROTECTED]
> wrote:
> > I need to write set surface shaders for a different sort of materials
> > such as silk, wool, cotton etc (without displacement shaders).
> > I've found not a lot of information in this task.
> > Where can I find the information on which properties materials have
> > and which models of illumination I should use?
> > Any help or pointers would be hugely appreciated.
> > PS: Here is draft images I've made
> > Alexander
>
> In my opinion you have some options to solve this problem:
>
> 1 Mathematic: Study papers about measured BRDF (Bidirectional
> Reflectance Distribution Function), there are plenty.
> 2 Artistical: Observing carefully how different fabrics look and add
> these elements to your shader.
>
> Felipe Esquivel
Thanks for your reply.
I have found some interesting articles about Measured BRDF and now
i'll try to use these equations in shaders.
But it will be very cool if someone tell me some basic properties of
cloth materials, for example silk has a lot of anisotropic specular,
cotton is simple diffuse with low level of specular component, etc.
|
