Normal Map

locherschmuck · November 27, 2020, 2:35pm

Hey there,

I have an issue when using a normal map in Shapediver. It shows some awkward flat surfaces on my bounded surface:

Any idea why this is happening?

Thx for Help

pavol · November 27, 2020, 2:42pm

It seems that the texture is out of scale. Is your geometry correctly mapped? You can use texture mapping components from Human plugin. Read more on texture mapping in this article:

locherschmuck · November 30, 2020, 7:51am

Yes, I have mapped the texture with Human but the scaling of the texture has no impact on the displayed rectangles at all. Here a picture of the used sphere:

pavol · November 30, 2020, 7:56am

Could you please share a minimal version of the definition and the texture replicating this?

locherschmuck · November 30, 2020, 8:17am

Here is the gh file:

Normalmap share.gh (4.7 MB)

pavol · November 30, 2020, 9:36am

I’m not sure what effect you are trying to achieve but your normal map is just a black texture which explains the incorrect rendering.

Unlike bump map which is a grayscale image, normal map is colour image and creates a better effect as it affects the surface normals of pixel fragments by using the RGB values. Make sure that any texture you wish to use is converted to a normal map, you can use this tool:

With use of a proper normal map, your model renders fine.

Normalmap share SD1.gh (2.2 MB)

locherschmuck · November 30, 2020, 10:43am

Ok, did not check the bitmap in gh, it should have been a blue texture so there was probably a problem with the import.
Thanks for the help we will look into it and see what results we can achieve.