Re: Line prims vs. Wireframe state

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Ran Yakir (rany++at++rtset.co.il)
Sat, 06 Dec 1997 01:15:52 +0200

Glenn Waldron wrote:

> What's the performance difference, if any, between:
>
> a) a pfGeoSet with PFGS_LINE/LINE_STRIP primitives;
> b) a pfGeoSet with solid prim type (e.g., PFGS_TRIS) using a
> pfGeoState with PFSTATE_ENWIREFRAME enabled
>
> In other words, how does Performer handle the ENWIREFRAME state
> flag? thanks- glenn.
>
>

As far as I know, from looking at ogldebug traces, both modes will use
GL_LINE_STRIP or GL_LINE_LOOP, so there shouldn't be a difference.I wonder
why the ENWIREFRAME is not done with glPolygonMode (GL_LINES) ?

Ran

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