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13 changes: 7 additions & 6 deletions tutorials/3d/standard_material_3d.rst
Original file line number Diff line number Diff line change
Expand Up @@ -455,12 +455,13 @@ AO map. It is recommended to bake ambient occlusion whenever possible.
Height
------


Setting a depth map on a material produces a ray-marched search to emulate the
proper displacement of cavities along the view direction. This is not real
added geometry, but an illusion of depth. It may not work for complex objects,
but it produces a realistic depth effect for textures. For best results,
*Depth* should be used together with normal mapping.
Setting a height map on a material produces a ray-marched search to emulate the
proper displacement of cavities along the view direction. This only creates an
illusion of depth, and does not add real geometry — for a height map shape used
for physics collision (such as terrain), see :ref:`class_HeightMapShape3D`. It
may not work for complex objects, but it produces a realistic depth effect for
textures. For best results, *Height* should be used together with normal
mapping.

.. image:: img/spatial_material20.png

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