Update standard_material_3d.rst to Godot 4

[cake-pie]

Depth renamed to Height; heading updated in #4587 but missed a mention in paragraph text.

[clayjohn]

Looks good. Nice catch!

[skyace65]

@clayjohn at the beginning of that section, should "depth map" be changed to "height map"?

[cake-pie]

"depth map" be changed to "height map"?

You're right; I'll adjust that too.

Would it be helpful to also add a note + pointer to HeightMapShape3D? For any readers landing here while searching for use cases such as procedurally generated terrain heightmaps.

- This is not real added geometry, but an illusion of depth.
+ This only creates an illusion of depth, and does not add real geometry — for height map
+ shape used for physics collision (such as terrain) see :ref:`class_HeightMapShape3D`.

[clayjohn]

Would it be helpful to also add a note + pointer to HeightMapShape3D? For any readers landing here while searching for use cases such as procedurally generated terrain heightmaps.

- This is not real added geometry, but an illusion of depth.
+ This only creates an illusion of depth, and does not add real geometry — for height map
+ shape used for physics collision (such as terrain) see :ref:`class_HeightMapShape3D`.

I think so!

[cake-pie]

Done!

[skyace65]

Just one minor change and this should be good.

[skyace65]

Thanks! And congrats on your first merged PR! In the future please keep PRs to 1 commit, I did a squash and merge this time but keep it in mind for the future. If you don't know how to do that we have a guide here

[cake-pie]

Noted, thanks!