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Merge pull request #53305 from Calinou/doc-surfacetool-generate-tangents
Document SurfaceTool must generate tangents for proper normal display
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<return type="void" />
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<argument index="0" name="flip" type="bool" default="false" />
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<description>
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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].
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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].
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[b]Note:[/b] [method generate_normals] only works if the primitive type to be set to [constant Mesh.PRIMITIVE_TRIANGLES].
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</description>
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</method>
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<method name="generate_tangents">
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<return type="void" />
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<description>
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Generates a tangent vector for each vertex. Requires that each vertex have UVs and normals set already.
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Generates a tangent vector for each vertex. Requires that each vertex have UVs and normals set already (see [method generate_normals]).
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</description>
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</method>
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<method name="get_custom_format" qualifiers="const">
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