Transform/Clip/Lighting interface
Drivers present a reduced set of the functions possible in glBegin()/glEnd() objects. Core mesa provides translation stubs for the remaining functions to map down to these entry points.
These are the initial values to be installed into dispatch by mesa. If the T&L driver wants to modify the dispatch table while installed, it must do so itself. It would be possible for the vertexformat to install it's own initial values for these functions, but this way there is an obvious list of what is expected of the driver.
If the driver wants to hook in entry points other than those listed, it must restore them to their original values in the disable() callback, below.
Definition at line 1029 of file dd.h.