glGetVertexAttribdv Interface to
OpenGL function glGetVertexAttribdv
usage: params = glGetVertexAttribdv( index, pname )
C function: void glGetVertexAttribdv(GLuint index, GLenum pname, GLdouble* params)
Psychtoolbox/PsychOpenGL/MOGL/wrap/_glGetVertexAttribdv.m