[Bf-cycles] Normal Map black render

[Santosh Singh]

Hello Team,

I am working cycles standalone code and trying to render with bump effects.
when i am wing the normal_map node, i am getting black render output.

I am using the below xml file data-

<cycles>
<camera width="800" height="500" />

<transform translate="0 2 -6" scale="1 1 1" rotate="20 1 0 0">
<camera type="perspective" />
</transform>

<!-- Background Shader -->
<background>
<background name="bg" strength="2.0" color="0.2, 0.2, 0.2" />
<connect from="bg background" to="output surface" />
</background>

<!-- Cube Shader -->
<shader name="cube">
<normal_map name="nmap" color="0.5, 0.5, 1.0" strength="1.0" />
<diffuse_bsdf name="cube_closure" roughness="0.0" />
<connect from="nmap normal" to="cube_closure normal" />
<connect from="cube_closure bsdf" to="output surface" />
</shader>
<!-- Sphere Object -->
<transform matrix=" 1 0 -0 0 0 1 -0 0 0 0 -1 0 -0 -0.25 -0.0225 1 ">
<state interpolation="smooth" shader="cube">
<mesh P="1.0 1.0 0.0
       -1.0 -1.0 0.0
        1.0 -1.0 0.0
       -1.0 1.0 0.0
        0.0 1.23 0.0"
 nverts="4 3"
  verts="0 3 1 2 4 3 0"
     UV="1.0 1.0 0.0 1.0 0.0 0.0 1.0 0.0 0.49 0.53 0.28 0.49 0.7 0.49" />
</state>
</transform >
</cycles>

Please assist me solve bump effects with proper render.

-- 
Thanks & Regards
 Santosh Kumar Singh
  Software Engineer
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