if function.name in ('glMapBuffer', 'glMapBufferOES'):
print r' glGetBufferParameteriv(target, GL_BUFFER_SIZE, &length);'
elif function.name == 'glMapBufferARB':
if function.name in ('glMapBuffer', 'glMapBufferOES'):
print r' glGetBufferParameteriv(target, GL_BUFFER_SIZE, &length);'
elif function.name == 'glMapBufferARB':