I would like a shader that works like Muddymole's Saturation Mask but I was wonder if it would also be possible to add a user set parameters like
Saturation = value (anything covered in mask would be set to this) ?
This would enable the option of doing effects with oversaturation like this:
(maybe it would be better to switch it around ie. anything not covered in mask gets set to saturation)
Pinging @MuddyMole since you made this and I'm linking to your file (hope this is ok).
I think this is what you want.
Yes, man you are fast!
Thank you!
I would like the effect to be blendable in this way:
saturatedlights.mfa
As seen it can be achieved by adding a lighten (photoshop blend mode) shader on the mask object but maybe it would be more efficient if it could do this on its own?
Is there a better way or should I just do it like this?
What you asking for is impossible to do with a single shader.
Since it's sampling the layer, it can only see what's in the layer, and in the layer the objects are covering each other.
So you have to merge the light sources with a blending shader anyway. The shader applied to the layer can't possible differentiate each individual object.
The only possible way of doing this in a more natural way would be using a palette or LUT (Color Grading) shader, cause then it would be able to do the stepped blended light in a natural way.
Problem is that colors might not look exactly like you want, and blended light sources may increase the general size of it.
BTW, this is what the shader sees... Can't imagine how it supposed to know what to blend
BUT... If you get the greyscale colors and move into alpha channel, then paint main image entirely white, you can blend it.
This means I will need to add a alpha channel toggle for this to work.
Okay, so I've tested having a toggle and a influence of alpha parameter, both doesn't behave as expected on DX11, no idea why.
Either way, it doesn't look exactly like your picture, it nearby light sources would combine making a bigger light source, it would kinda of still be stepped, but lighter steps would combine creating a in between color.
This in between color would not happen with the brightest point of the light source, but still not what you showed.
Here's a pic in case you want to see how it would look without the lighten shader and using alpha channel on the light sources...
Ah, here's a small fix, alpha was causing problems, I think I forgot it enabled on DX9
Right. Yeah, the in between colors is not the desired effect.
I'm a bit confused, did you add the alpha channel toggle or was this just something you tested? Is there any difference in DX11 in the two versions you've posted ?
In any case I'm happy with the effect SaturationMask 2 + lighten gives me. I'm only concerned about performance as my project can use 100+ lightsources and I figured using 1 fullscreen shader would be better/faster than using that plus another shader on 100+ objects. But I'm only guessing here, maybe it won't even matter. I need to do more tests.
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