"Invalid value" suggest OSG is passing an invalid parameter to a function such as glScissor. A couple suggestions:

* Look at your code and determine how you are configuring the Stencil StateAttribute. * Set a breakpoint in Scissor::apply and ensure OSG is passing valid values to all OpenGL commands made in that function. * Turn up your notify level so that you get the dump of supported extensions, and look for ones that are stencil-related but unsupported on your card (stencil_two_side for example). Make sure OSG isn't using one of these extensions in Stencil::apply by accident. If it is, submit a fix.

Paul Martz
Skew Matrix Software LLC
_http://www.skew-matrix.com_ <http://www.skew-matrix.com/>
+1 303 859 9466

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