glStencilOpSeparate Interface to
OpenGL function glStencilOpSeparate
usage: glStencilOpSeparate( face, fail, zfail, zpass )
C function: void glStencilOpSeparate(GLenum face, GLenum fail, GLenum zfail, GLenum zpass)
Psychtoolbox/PsychOpenGL/MOGL/wrap/glStencilOpSeparate.m