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Hi Vlado,
Here's something I wish Vray hair shader has for a while ... and I think no hair shader currently has this .. but I did not tried all renderer out there ^^ but from what I can see, I never seen that effect yet in renders... and it's a BIG missing think, that make hairs look so CG right now.. there is 2 thing in my request that would tremendously help to sell the realism more.
First, and the big one, is a second reflection, just after the highlight, but not any kind of reflection, his behavior is special, I joined an image to explain how it need to react to light etc. I also joined images of real life phenomena so you can see well what I mean.
The other one, is having a sort of bump function on the hair itself, specially for the reflection, to create some breakdown that we can adjust ! Also, Vray render the hairs has 2d planes .. from a distance it can work , but for close up shot it shows a LOT .. and often the reflection look really odd on the hairs, because they are place, so reflection is all the width of the hair, instead to be just at the tip of the rondness of the hairs.. don't pretend it don't show, it show's a lot actually , so is there a way so you can cheat the reflection to act like it was on a cylinder instead of a plane ( if making them render as cylinder is too expensive ) ? I know Arnold, Alhair has a function for rendering it as 2d plane or cylinder, I don't know if it consume much more ram on cylinder, I never tried it.
Tell me if you can add at least the first one, it would make the hairs MUCH MUCH more realistic!
Thank you Vlado !
and BTW, on the drawing, the curved hairs with the light position is a distorted perspective , showing a curly hair , how the reflection would look on it dependantly of the light placement, I don't know if it's clear, if not ask me will try to explain it differently.
Here's something I wish Vray hair shader has for a while ... and I think no hair shader currently has this .. but I did not tried all renderer out there ^^ but from what I can see, I never seen that effect yet in renders... and it's a BIG missing think, that make hairs look so CG right now.. there is 2 thing in my request that would tremendously help to sell the realism more.
First, and the big one, is a second reflection, just after the highlight, but not any kind of reflection, his behavior is special, I joined an image to explain how it need to react to light etc. I also joined images of real life phenomena so you can see well what I mean.
The other one, is having a sort of bump function on the hair itself, specially for the reflection, to create some breakdown that we can adjust ! Also, Vray render the hairs has 2d planes .. from a distance it can work , but for close up shot it shows a LOT .. and often the reflection look really odd on the hairs, because they are place, so reflection is all the width of the hair, instead to be just at the tip of the rondness of the hairs.. don't pretend it don't show, it show's a lot actually , so is there a way so you can cheat the reflection to act like it was on a cylinder instead of a plane ( if making them render as cylinder is too expensive ) ? I know Arnold, Alhair has a function for rendering it as 2d plane or cylinder, I don't know if it consume much more ram on cylinder, I never tried it.
Tell me if you can add at least the first one, it would make the hairs MUCH MUCH more realistic!
Thank you Vlado !
and BTW, on the drawing, the curved hairs with the light position is a distorted perspective , showing a curly hair , how the reflection would look on it dependantly of the light placement, I don't know if it's clear, if not ask me will try to explain it differently.
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