   D3DRS_STENCILWRITEMASK in opengl
  hiwhat is the equal of D3DRS_STENCILWRITEMASK in the OpenGL?   
  I think this is a third parameter of glStencilFunc();  glStencilMask for D3DRS_STENCILWRITEMASKthird parameter of glStencilFunc for D3DRS_STENCILMASK   