glu_tess_callback_combine 700 php_opengl/opengl/php_glu.c gluTessCallback(glutess, Z_LVAL_P(which), (GLvoid (CALLBACK*) ()) &glu_tess_callback_combine); glu_tess_callback_combine 101 php_opengl/opengl/php_glu.h void CALLBACK glu_tess_callback_combine(GLdouble coords[3], void *vertex_data[4], GLfloat weight[4], void **out_data);