"I'm asking becuase I keep seeing this over and over and over agian, and I want to know." The reason I would want to see OpenGL over the current shading preview mode is for real-time visualization. You can get a much better approximation of how a scene will look when rendered with OpenGL than you can with Poser's current shader preview, and therefore reduce dramatically the wasted time you spend "test rendering" a scene. That's why I use it in other applications, and that's why I'd like to see it in Poser. Of course there are drawbacks to using OpenGL as previously mentioned. Depends on your needs. ;-)

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Tools :  3dsmax 2015, Daz Studio 4.6, PoserPro 2012, Blender v2.74

System: Pentium QuadCore i7, under Win 8, GeForce GTX 780 / 2GB GPU.