gaming/godot
gaming/godot
1
0
Fork 0
mirror of https://github.com/godotengine/godot synced 2024-11-02 09:38:07 +00:00
Code Issues Projects Releases Packages Wiki Activity

Document that tangents are required for normal mapping in BaseMaterial3D

Browse source
This commit is contained in:
Hugo Locurcio 2021-10-01 17:30:19 +02:00
parent 93cb71cca9
commit 22e759dd11
No known key found for this signature in database
GPG key ID: 39E8F8BE30B0A49C
1 changed files with 2 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
doc/classes/BaseMaterial3D.xml
View file

@ -250,7 +250,8 @@
The strength of the normal map's effect.
</member>
<member name="normal_texture" type="Texture2D" setter="set_texture" getter="get_texture">
Texture used to specify the normal at a given pixel. The [code]normal_texture[/code] only uses the red and green channels. The normal read from [code]normal_texture[/code] is oriented around the surface normal provided by the [Mesh].
Texture used to specify the normal at a given pixel. The [code]normal_texture[/code] only uses the red and green channels; the blue and alpha channels are ignored. The normal read from [code]normal_texture[/code] is oriented around the surface normal provided by the [Mesh].
[b]Note:[/b] The mesh must have both normals and tangents defined in its vertex data. Otherwise, the normal map won't render correctly and will only appear to darken the whole surface. If creating geometry with [SurfaceTool], you can use [method SurfaceTool.generate_normals] and [method SurfaceTool.generate_tangents] to automatically generate normals and tangents respectively.
[b]Note:[/b] Godot expects the normal map to use X+, Y-, and Z+ coordinates. See [url=http://wiki.polycount.com/wiki/Normal_Map_Technical_Details#Common_Swizzle_Coordinates]this page[/url] for a comparison of normal map coordinates expected by popular engines.
</member>
<member name="orm_texture" type="Texture2D" setter="set_texture" getter="get_texture">