Using Vray Blend bump normal to blend displacement?

[adrian_camarena]

I noticed that there is a Vray blend bump normal utility texture node in the Houdini version of Vray. Can this also be used to combine displacement textures? thanks.

[adrian_camarena]

In redshift there is a displacement blender node that works pretty well. I tried using Vray TexMix to blend displacements. I could get it working blending two displacement maps but when I tried to blend a 3rd by adding another TexMix it didn't work. Is there a way to make it work for blending multiple displacement maps. I see that there is a Vray blend bump but that only seams to work with normal and bump maps.

[david.anastacio]

Hi,

Why don't you just use a "layer" node?

Best,
David.

[adrian_camarena]

Got it working and the textures blending correctly once I subtracted .5 from each of them before mixing.

[david.anastacio]

Got it working and the textures blending correctly once I subtracted .5 from each of them before mixing.

Can you be more specific on how you are trying to blend your displacement? And the textures you are using, what range are they in?

Usually the displacement maps range from 0.0 to 1.0, and 0.5 would be no displacement. But in v-ray, the amount value dictates how much displacement is the white, and it only goes "out" the geometry. In addition of using the "amount" value, you also need to use the "shift" amount by half of the negative amount, so, if you want an amount of 1.0 the shift should be -0.5. This will make the displacement to be shifted down by 0.5 and this way a grey value of 0.5 will represent no displacement.

When blending displacement textures together if they are in this range you should use "overlay" (you can use whatever is needed, just assuming you want to blend 2 displacement textures in the same range).

Best,
David.