glUniformMatrix2fv Interface to
OpenGL function glUniformMatrix2fv
usage: glUniformMatrix2fv( location, count, transpose, value )
C function: void glUniformMatrix2fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat* value)
Psychtoolbox/PsychOpenGL/MOGL/wrap/glUniformMatrix2fv.m