Re: [Plib-devel] ssg states followup

[Steve B. <sjb...@ai...>]

"Curtis L. Olson" wrote:
> 
> Steve,
> 
> I think I stumbled on the answer to my previous question ... just call
> my_state->force() ... right?
> 
> Hmmm, it's even there in the docs, fancy that.

*ouch*!!  :-)

> Ok, one more question.  Is it legal to use ssgSimpleStates to control
> *all* the states that you can glEnable and glDisable?  I'm thinking
> about things like GL_FOG, GL_DEPTH_TEST, GL_CULL_FACE, etc.

No - I had great heartache over that.  I decided to stick to those
states that you are likely to want to set and unset rapidly in a
'typical' application.  That keeps to a minimum the amount of state
*testing* for each leaf node as it's rendered.

It would be a pretty weird application that needed to switch
Fog and Depth-test on a per-leaf-node basis.

Of course GL_CULL_FACE is set per ssgLeaf node - so you don't want
to mess with ssgState's for that.

-- 
Steve Baker                  http://web2.airmail.net/sjbaker1
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