Is it possible to create an image effect shader that fades out / tones down or washes out the colors?
Simply put it should turn down the lighting making everything darker, while still retaining the crispness of the image. A sort of dampen image effect.
I should be used for render textures in an in game 3d menu to represent items in the menu that are not highlighted so to speak.
It would be possible for me to make seperate lighting for each item, just what i have read lights are expensive performane wise, so atm im having all items lighted by one ambient direction light.
So i though a cheap way, performance wise to do some light effect would be to have the shader turn down the light, but i have no clue if it is possible or if its even cheaper than doing individual lighting. There are only 4 items at anytime that need lighting.
Hope this makes atleast some sense.
Cheers.