glGetSeparableFilter Interface to
OpenGL function glGetSeparableFilter
usage: [ row, column, span ] = glGetSeparableFilter( target, format, type )
C function: void glGetSeparableFilter(GLenum target, GLenum format, GLenum type, GLvoid* row, GLvoid* column, GLvoid* span)
Psychtoolbox/PsychOpenGL/MOGL/wrap/_glGetSeparableFilter.m