Re: [Mesa3d-dev] LIGHT_FLAGS

[Keith W. <ke...@tu...>]

Bob Peters wrote:
> Hi
> 
>  
> 
> What is the difference of the lighting functions built with LIGHT_FLAGS 
> defined and without. (recognizable on the suffix _fl at the end of the 
> lighting function)
> 
> I saw that LIGHT_FLAGS versions are choosen when VB->Flag is true during 
> the run_lighting function.
> 
> But I cannot track down in exactly what situations VB->Flag is true and 
> when it is not.

Flags are generated by the glBegin/glEnd interfaces but not by the vertex 
array interfaces.

Flags allow some lighting routines to light per-normal rather than per-vertex 
(where these are equivalent).

Keith