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http://forums.arcgis.com/threads/54072-textures-raster-files-concepts-in-CityEngine-ArcGIS
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Oblique imagery is not directly supported for texturing (the images themselves of course, but not the oblique texture coordinate projection).
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.... CityEngine supports assets ( e.g. .dae ) which have 1 or multiple textures already assigned to it ( with correct UVs ). ...
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http://forums.arcgis.com/threads/76669-Shapes-VS.-Models-VS.-MultiPatch