Displacement problem - whole surface/diffuse map offset

[retsac]

hi,

i have a problem while experimenting with displacement and grass textures: The whole surface offsets the amount of the 'displacement value'. the preview material looks really good, but while final rendering of in RT is offset. I toggled use globals on and off, also no difference.

• yes the material is in a seperate group.

Somebody has an idea why this happens?

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testing.skp

[koenvdw]

I'm going to give the same advice I got here when I was explaining my displacement problems.
Don't use displacement on grass.
My method: include the "material id" in options/channels. In photoshop/GIMP you can mask out the grass with the material id layer. Then add real grass from a picture that suits your scene.
Pay attention to edges. you can download a grass shaped brush and with the clone stamp tool you can make it look like the grass grows over the edges.

Or invest in skatter ... There's some learningcurve involved.

[peerman]

In Skatter you have grass presets with which you can create grass with about 2 clicks. Works great! You choose the grass you want and then click on the group where you want the grass to grow. Of course there are lot more options, but for most situations I find it very fast to work with.

Regards,

[rspierenburg]

But just out of curiosity, can you post an image of your Displacement map for the grass? I'm guessing there is something funny there.

[driven]

does this also happen if you use a perspective view...

it seems odd to me that your using PP to try to get a photorealistic look...

john