Clarify the behavior of CSGMesh using ArrayMesh

[mandryskowski]

The docs for CSGMesh/CSGMesh3D should say that it ignores all vertex attribute arrays of ArrayMesh except position, uv1 and normal. I tried to use per-vertex color in a shader only to realise that it is not even used when creating the brush.

Compatible with 3.x.

godot/modules/csg/csg_shape.cpp

Line 740 in 9435c38

CSGBrush *CSGMesh::_build_brush() {

godot/modules/csg/csg_shape.cpp

Lines 888 to 889 in 9435c38

	return _create_brush_from_arrays(vertices, uvs, smooth, materials);
	}

[fire]

As far as I can tell, the description is accurate.

The "blast radius" is small so I'm approving this because it's a documentation change and not a code change.

[akien-mga]

Thanks!

[YuriSizov]

Cherry-picked for 4.1.3.