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Document SurfaceTool must generate tangents for proper normal display

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(cherry picked from commit d339388942)
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Hugo Locurcio 2021-10-01 17:20:25 +02:00 committed by Rémi Verschelde
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doc/classes/SurfaceTool.xml
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@ -170,14 +170,14 @@
<return type="void" />
<argument index="0" name="flip" type="bool" default="false" />
<description>
Generates normals from vertices so you do not have to do it manually. If [code]flip[/code] is [code]true[/code], the resulting normals will be inverted. [method generate_normals] should be called [i]after[/i] generating geometry and [i]before[/i] committing the mesh using [method commit] or [method commit_to_arrays].
Generates normals from vertices so you do not have to do it manually. If [code]flip[/code] is [code]true[/code], the resulting normals will be inverted. [method generate_normals] should be called [i]after[/i] generating geometry and [i]before[/i] committing the mesh using [method commit] or [method commit_to_arrays]. For correct display of normal-mapped surfaces, you will also have to generate tangents using [method generate_tangents].
[b]Note:[/b] [method generate_normals] only works if the primitive type to be set to [constant Mesh.PRIMITIVE_TRIANGLES].
</description>
</method>
<method name="generate_tangents">
<return type="void" />
<description>
Generates a tangent vector for each vertex. Requires that each vertex have UVs and normals set already.
Generates a tangent vector for each vertex. Requires that each vertex have UVs and normals set already (see [method generate_normals]).
</description>
</method>
<method name="index">