Seams issues

Support Materials and Textures
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#1

Hey Guys,
I am facing this problem, I have searched in the forum and couldnt able to find a solution for this, I think I am doing something wrong here, I want to bake a high res mesh into a lowres mesh as normal map
I have tired baking it and it is working but I am getting wierd gradient when i apply the map on the low res.
The maps seems to be fine but for some reason when I apply it its not working fine,Please see the images below.

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h.jpg664×756 23.6 KB

l
l.jpg683×831 23.5 KB

issue
issue.jpg1586×906 90.2 KB

Thanks in advance

#2

UPDATE:
I have an idea why this is happening, I tried applying the same map in Houdini, It works fine but in houdini mantra shader we have an option to set the value range to 0 to 1 or -1 to 1 , When I set that to -1 to 1 , I got the same result as I got in blender, So I think If I some how remap the values between 0 to 1 in blender it might work. please someone let me know if im right.

#3

Actually I think you have it backwards, but I could be wrong. When you are getting the error in Houdini by setting it to -1 to 1 that means that the texture is already remapped from 0 to 1.

A few things to check or try in Blender.

Is scene your color space set to Linear or RGB?

This info from the Houdini manual might be helpful:

The values of a normal vector are naturally in the [-1,1] range.

Since negative texture values are difficult to work with and impossible to store in some texture formats, applications usually remap the values to the [0,1] range before they’re stored in a texture.

When rendering with textures stored in this format, leave the Normal Space parameter on mantra shaders at the default of 0 to 1 .

Formats like .rat and .exr can store the normals using their natural [-1,1] range, so you may sometimes encounter textures that are stored this way. In this case set Normal Space to -1 to 1 .

Flipped X & Y

Textures exported from some packages will have the Y , and more rarely the X component flipped. If your texture imports flipped, use the Flip X and Flip Y parameters on mantra shaders to correct it.

Color Space

You should store detail maps in linear color space . If you save a map in an image format that is natively sRGB (such as TIFF, JPEG, or PNG), you must avoid applying gamma to the image.

  • If you write a detail map with the Composite ROP, turn off Convert to Image Format’s Colorspace .
  • If you load a map in a Texture VOP, set the color space to Linear to prevent gamma correction.
  • If you load a map into the compositor with a File COP, turn off Linearize Non-Linear Images .

Also what is the color space setting of the Normal map node?

And what image format did you bake to?

#4

set the color space of the texture to “non color” and bake again