void GL_DepthMask(int state);
void GL_DepthTest(int state);
void GL_DepthRange(float nearfrac, float farfrac);
+void GL_PolygonOffset(float planeoffset, float depthoffset);
void GL_CullFace(int state);
void GL_AlphaTest(int state);
void GL_ColorMask(int r, int g, int b, int a);