Hello! I created a picture with a gradient. I want to use it as a height map for
a sphere. However, only gray stripes are visible on the sphere.

#version 3.7;
#include "shapes.inc"

global_settings {
    assumed_gamma 1.000000
    max_trace_level 3
    charset utf8
}
sky_sphere {
    pigment {rgb<0.051, 0.051, 0.051>}
}

#declare Default_texture = texture{pigment {rgb 0.8}}

#declare Material = texture{
    pigment{color srgbft <0.8000,0.8000,0.8000,0.0000,0.0000>}
    finish{
        diffuse 0.8000
        brilliance 1.8000
          }
}
#declare Material_001 = texture{
    pigment{color srgbft <0.8000,0.8000,0.8000,0.0000,0.0000>}
    normal{ bump_map{"/home/lanuhum/src/Thread_90.jpg" gamma 1.1000 map_type 0
interpolate 2 bump_size 5}
        translate <0.0000,0.0000,0.0000>
        rotate <0.0000,0.0000,0.0000>
        scale <1.0000,1.0000,1.0000>/1
        }
    finish{
        diffuse 0.8000
        brilliance 1.8000
          }
}
#declare data_Sphere_shape_ob = sphere { 0,1
    texture {Material_001}
    matrix <1.000000, 0.000000, 0.000000,  0.000000, 1.000000, 0.000000,
0.000000, 0.000000, 1.000000,  0.000000, 0.000000, 0.000000>
}
#include "data_Cube_dec.inc"

object {data_Sphere_shape_ob
    matrix <1.000000, 0.000000, 0.000000,  0.000000, -0.000000, -1.000000,
0.000000, 1.000000, -0.000000,  0.000000, 0.000000, 0.000000>
}
object {data_Cube_ob
    matrix <1.000000, 0.000000, 0.000000,  0.000000, -0.000000, -1.000000,
0.000000, 1.000000, -0.000000,  0.000000, 0.000000, 0.000000>
}
light_source {
    <4.08,5.9,-1.01>
    color rgb<1, 1, 1>
    fade_distance 29.9999828339
    fade_power 1
}
camera {
    perspective
    location  <0,0,0>
    look_at  <0,0,-1>
    right <-1.7777777777777777, 0, 0>
    up <0, 1, 0>
    angle  49.134343
    rotate  <-26.440706, 46.691945, -0.000003>
    translate <7.481132, 5.343666, 6.507640>
}

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Attachments:
Download 'bump_map.jpg' (64 KB)

Preview of image 'bump_map.jpg'