Export 3ds texture

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I learned that, Sketchup does not support perspective textures, only parallel textures.

Sketchup generates too many textures

No, SketchUp does support perspectivic texture transformation (4 texture pins freely placed) and internally keeps a single texture. But under some circumstances, namely export, it assumes the export format supports only affine texture transformation (3 texture pins freely placed, 4 texture pins always form a diamond). Then SketchUp makes textures on faces with perspectivic transformation unique. You could keep discipline and avoid perspectivic transformation altogether (use only red, green, b…