Watercolor pigment granulation effect

I wish that the future Rebelle version will have that pigment granulation effect as shown in the sample image above.  Pigment granulation add some nice texture on the painting and its a nice feature of a watercolor painting.

Hi Peter, in Visual Settings change Canvas Influence to higher, it will make granulation stronger.

Peter B, the problem is that only certain colors with heavy pigment particles will granulate, while staining colors do not. So granulation occurs only in certain parts of a painting where these colors are used, as in Peter S J's example on the left. Enhancing the paper texture everywhere is fine, but it's not the same as emulating those granulating pigments.

Perhaps one approach might be to enable paper texture variation in different areas via the use of the lasso tool (with the feathering option). That way we could adjust the overall paper texture for the painting in general, and in areas where we want granulation we could select and enhance the paper texture.

I sure will be happy when we are able to edit and/or delete posts.

Anyway, with regards to my previous post, after experimenting a bit I believe that isolating areas with the lasso tool and changing the canvas influence setting is already possible along with switching to a rougher canvas for additional texture in certain areas, but so far I haven't been able to come close to a natural granulation look.

I also tried adding a spatter in a color slightly darker than the base tone, but the spatter drops would have to match the paper grain rather precisely in order to emulate granulation. I'll need to experiment further.

I will think about how to make the granulation. In the reality it is a chemical process, that is why it's visible only on certain colors, like blue.

Granulation come from different pigment particles having different specific gravity. Heavy pigments settle quickly into the texture of the paper while the water and other (lighter) pigments in the color mixture seperate out and continue flowing/moving/diffusing.

Like Jason said, I have to think about that how to implement it more realistically..

@Peter Blaskovic, the simpliest conception of it, what i have in my head:

- to have 3 additional parameters of brush preferencies: 

1) "particles amount" - to control ammount of effect particles which control amount granularity particles (i mean what 1 effect particle can be emmiter of several granuls particles which will be rendered by visual engine)

2) "particles weight" - to control speed of spread particles in the water with other (not granular) part of paint

3-4) granuls "hue, value, saturation" parameters for fine tune granuls shades and interesting effects

and yeah - paper texture influence cant replace paint granulation - because it just a papper texture (not paint) and on such types of paper as satin (very smooth) it will not work at all as it has no almost any texure on it