Update Importing 3D scenes documentation for Godot 4.0

- Document the Advanced Import Settings dialog for 3D scenes.
- Replace occurrences of "DCC" with "3D modeling software" across the
  documentation, which is more universally understood.

Co-authored-by: Lyuma <xn.lyuma@gmail.com>

Author: Calinou

about/faq.rst

@@ -162,7 +162,7 @@ What 3D model formats does Godot support?
 -----------------------------------------
 
 You can find detailed information on supported formats, how to export them from
-your 3D DCC, and how to import them for Godot in the
+your 3D modeling software, and how to import them for Godot in the
 :ref:`doc_importing_3d_scenes` documentation.
 
 Will [insert closed SDK such as FMOD, GameWorks, etc.] be supported in Godot?

tutorials/3d/global_illumination/using_lightmap_gi.rst

@@ -143,8 +143,8 @@ of the 3D editor viewport:
 This will generate a second set of UV2 coordinates which can be used for baking.
 It will also set the texture size automatically.
 
-Unwrap from your 3D DCC
-^^^^^^^^^^^^^^^^^^^^^^^
+Unwrap from your 3D modeling software
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 The last option is to do it from your favorite 3D app. This approach is
 generally **not recommended**, but it's explained so that you know it exists.
@@ -161,10 +161,10 @@ size on the mesh after import.
 
 .. image:: img/lightmap_gi_lmsize.png
 
-If you use external meshes on import, the size will be kept.
-Be wary that most unwrappers in 3D DCCs are not quality oriented, as they are
-meant to work quickly. You will mostly need to use seams or other techniques to
-create better unwrapping.
+If you use external meshes on import, the size will be kept. Be wary that most
+unwrappers in 3D modeling software are not quality-oriented, as they are meant
+to work quickly. You will mostly need to use seams or other techniques to create
+better unwrapping.
 
 Checking UV2
 ^^^^^^^^^^^^

tutorials/3d/high_dynamic_range.rst

@@ -8,10 +8,10 @@ High dynamic range lighting
 Introduction
 ------------
 
-Normally, an artist does all the 3D modelling, then all the texturing,
-looks at their awesome looking model in the 3D DCC and says "looks
-fantastic, ready for integration!" then goes into the game, lighting is
-setup and the game runs.
+Normally, an artist does all the 3D modelling, then all the texturing, looks at
+their awesome looking model in the 3D modeling software and says "looks
+fantastic, ready for integration!" then goes into the game, lighting is setup
+and the game runs.
 
 So at what point does all this "HDR" business come into play? To understand
 the answer, we need to look at how displays behave.

tutorials/3d/introduction_to_3d.rst

@@ -38,21 +38,21 @@ scale.
 3D content
 ~~~~~~~~~~
 
-Unlike 2D, where loading image content and drawing is straightforward,
-3D is a little more difficult. The content needs to be created with
-special 3D tools (usually referred to as Digital Content Creation tools, or
-DCCs) and exported to an exchange file format to be imported in
-Godot. This is required since 3D formats are not as standardized as images.
+Unlike 2D, where loading image content and drawing is straightforward, 3D is a
+little more difficult. The content needs to be created with special 3D tools
+(also called Digital Content Creation tools, or DCCs) and exported to an
+exchange file format to be imported in Godot. This is required since 3D formats
+are not as standardized as images.
 
-DCC-created models
-------------------
+Maually authored models (using 3D modeling software)
+----------------------------------------------------
 
 .. FIXME: Needs update to properly description Godot 3.x workflow
    (used to reference a non existing doc_importing_3d_meshes importer).
 
-There are two pipelines to import 3D models in Godot. The first and most
-common one is by :ref:`doc_importing_3d_scenes`, which allows you to import
-entire scenes (exactly as they look in the DCC), including animation,
+There are two pipelines to import 3D models in Godot. The first and most common
+one is by :ref:`doc_importing_3d_scenes`, which allows you to import entire
+scenes (exactly as they look in the 3D modeling software), including animation,
 skeletal rigs, blend shapes, etc.
 
 The second pipeline is by importing simple .OBJ files as mesh resources,
@@ -130,12 +130,12 @@ system for everything in 3D, with 1 unit being equal to 1 meter.
 Physics and other areas are tuned for this scale. Therefore, attempting to use a
 different scale is usually a bad idea (unless you know what you are doing).
 
-When working with 3D assets, it's always best to work in the correct
-scale (set your DCC to metric). Godot allows scaling post-import and,
-while this works in most cases, in rare situations it may introduce
-floating-point precision issues (and thus, glitches or artifacts) in
-delicate areas such as rendering or physics. Make sure your artists
-always work in the right scale!
+When working with 3D assets, it's always best to work in the correct scale (set
+the unit to metric in your 3D modeling software). Godot allows scaling
+post-import and, while this works in most cases, in rare situations it may
+introduce floating-point precision issues (and thus, glitches or artifacts) in
+delicate areas such as rendering or physics. Make sure your artists always work
+in the right scale!
 
 The Y coordinate is used for "up". As for the horizontal X/Z axes, Godot uses a
 **right-handed** coordinate system. This means that for most objects that need

tutorials/3d/mesh_lod.rst

@@ -84,6 +84,20 @@ click **Reimport**:
 
 This will require restarting the editor after clicking **Reimport**.
 
+.. note::
+
+   The mesh LOD generation process is not perfect, and may occasionally
+   introduce rendering issues (especially in skinned meshes). Mesh LOD
+   generation can also take a while on complex meshes.
+
+   If mesh LOD causes a specific mesh to look broken, you can disable LOD
+   generation for it in the Import dock. This will also speed up resource
+   importing. This can be done globally in the 3D scene's import options, or on
+   a per-mesh basis using the Advanced Import Settings dialog.
+
+   See :ref:`Importing 3D scenes <doc_importing_3d_scenes_using_the_import_dock>`
+   for more information.
+
 Comparing mesh LOD visuals and performance
 ------------------------------------------
 

tutorials/3d/standard_material_3d.rst

@@ -218,8 +218,8 @@ Choosing this option means vertex color is used as albedo color.
 Is sRGB
 ~~~~~~~
 
-Most 3D DCCs will likely export vertex colors as sRGB, so toggling this
-option on will help them look correct.
+Most 3D modeling software will likely export vertex colors as sRGB, so toggling
+this option on will help them look correct.
 
 Albedo
 ------
@@ -531,8 +531,8 @@ Use Point Size
 ~~~~~~~~~~~~~~~
 
 This option is only effective when the geometry rendered is made of points
-(generally it's made of triangles when imported from 3D DCCs). If so, then
-those points can be resized (see below).
+(generally it's made of triangles when imported from 3D modeling software). If
+so, then those points can be resized (see below).
 
 Point Size
 ~~~~~~~~~~