Filtering shader

Unity Engine
1

Hi everybody! :razz:

I’m trying to create a shader which can “filter” colors, like the color correction post-effect (from PRO packages).

For example, I want a “blue filter” which is a plane in front of the camera. Then, every object which is behind this plane reflect only their blue level. If the object is yellow, it will be black because there is no blue in the yellow.

Does someone know how to do that ? :o

Thanks in advance :slight_smile:

P.S. : I asked in another forum, they told me that shaders can do that ( http://forum.unity3d.com/threads/73481-Displaying-different-color-modes )

2

Nobody can help ? :confused:

3

Try the built-in Particles/Multiply shader.

4

Yay thanks!

I was trying things much more far-fetched, and it was just a built-in shader thanks a lot! :smile:

5

Hi again! Sorry for the double post but I’m now trying to do something similar, but with black and white.

I want the shader to filter every colors, so that the scene will be completelely in black and white (grayscale).

Any ideas please? I was searching something that only displays the luminosity or something like that but I’m stucked :confused:

6

Up :o

7

Nobody ? :x

8

You didn’t try the grey-scale image effect shader?

If you don’t have Unity Pro then perhaps replacement shaders rendering to an alternative camera which you can switch to when you want to enable the effect.

9

Thanks for your message!

The grayscale shader is for making AN object in grayscale, but what I want is a sort of “filter” (a plane) where everything is behind will be in grayscale. It is quite the same than the color correction post-effect in Unity Pro (I don’t have it).

I don’t understand what you mean with “replacement shaders rendering to an alternative camera”, what did you mean?