Added frustum plane extraction and sphere culling code.

Change-Id: I9d55baecddc962f8973f0269f2f9977f1d4ce008
diff --git a/rsScriptC_LibGL.cpp b/rsScriptC_LibGL.cpp
index 4b8de76..a7877cd 100644
--- a/rsScriptC_LibGL.cpp
+++ b/rsScriptC_LibGL.cpp
@@ -117,6 +117,12 @@
     pf->setConstantColor(r, g, b, a);
 }
 
+static void SC_vpGetProjectionMatrix(rsc_Matrix *m)
+{
+    GET_TLS();
+    rsc->getVertex()->getProjectionMatrix(m);
+}
+
 
 //////////////////////////////////////////////////////////////////////////////
 // Drawing
@@ -387,6 +393,8 @@
     { "_Z31rsgProgramVertexLoadModelMatrixPK12rs_matrix4x4", (void *)&SC_vpLoadModelMatrix },
     { "_Z33rsgProgramVertexLoadTextureMatrixPK12rs_matrix4x4", (void *)&SC_vpLoadTextureMatrix },
 
+    { "_Z35rsgProgramVertexGetProjectionMatrixP12rs_matrix4x4", (void *)&SC_vpGetProjectionMatrix },
+
     { "_Z31rsgProgramFragmentConstantColor19rs_program_fragmentffff", (void *)&SC_pfConstantColor },
 
     { "_Z11rsgGetWidthv", (void *)&SC_getWidth },