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Acrobat 3D provides OpenGL Capture capability to capture 3D designs directly from CAD applications :
February 09, 2006 : Acrobat 3D lets you add 3D to an Acrobat pdf document. It includes an OpenGL Capture capability that captures any output from a CAD application that is displayed using the OpenGL API (whatever is going through the OpenGL stream), and converts this into an interactive 1 page 3D pdf document. The OpenGL Capture utility will handle geometry, textures, materials and basic shaders.

Adobe® Acrobat® 3D software enriches collaboration by enabling extended teams to use Adobe PDF documents to more securely and reliably communicate 3D design intent. Insert and publish 3D designs from major CAD applications in Adobe PDF documents that can easily be shared with suppliers, partners, and customers using free Adobe Reader® 7.0 software.