I’m experimenting with the displace modifier. On the attache image, you can see the image that is mapped on the planes. The red values are 0.25, 1 and 3, so outside the 0 to 1 range. In the plane in the middle, I’m using the normals to displace. Blender takes the values and bring them down to something between 0 and 1. On the last plane, I use RGB to XYZ and I get exactly what I was aiming for but there’s a problem with both. The texture I use also has negative values on the left and these are not being used for the displacement. For me that’s a problem because Mudbox and zBrush bit use negative values in their displacement maps. So the question is, am I missing something or Blender just doesn’t support negative values? I included the blend file if anybody wants to give it a shot. For both planes we should see steps going in the opposite direction.
displacementTest.blend.zip (1.7 MB)